Compiled by Colby B. Rucker Preface: Use of Copyrighted Material

654. Reseda lutea L. 1753 Shr.439, B&B.525

(Yellow Cut-leaved Mignonette)

Cultivated herb, occasionally escaping. Adventive from Europe.

(US) (Stieber 1967).

655. Sarracenia flava L. 1753. B&B: unlisted.

(Yellow Pitcher-plant, Trumpets, Trumpet-leaf)

Tall slender hollow-leaved native insectivorous herb.

(Crimson Pitcher-plant)

657. Sarracenia purpurea L. 1753. Shr.440, B&B.525

(Purple Pitcher- plant)

While most local populations may be var. purpurea, the Northern Pitcher- plant, such is uncertain; some introduced specimens may be var. venosa.

Native insectivorous herb.

Habitat: "In peat bogs" (Britton 1901).

Heritage Rating: 1988: B3 (state rare). 1991: Threatened.

Records:

(1.) Saw Mill Branch (Plitt 3/31/1899).

(2.) Glen Burnie Pond (Saw Mill Pond) (Plitt 5/13/1899; 5/30/1899; 5/30/1900, "hundreds of flowers" - see Sipple 1999, p.382; 5/17/1902 - see Sipple 1999, p.382; 5/26/1906; 5/29/1920). Glenburnie bog (C. E. Waters 1905). "Glenburnie (M. A. Chrysler)" (Shreve et al 1910, p.440). Peat bog at Glenburnie (M. A. Chrysler, in Shreve et al 1910; p.185). The flooding noted by Plitt in 1920 was caused by dam construction which later caused the Sarracenia to disappear (Fessenden 1955).

(3.) Near Forest Home: (Plitt 5/2/1903, 4/29/1905).

(4.) "Cypress swamp near Round Bay ...an arm of the Magothy" [Cypree Creek] C.C.Plitt 5/28/1904; see Sipple 1999, p.355. At Round Bay, with Chamaedaphne and Chamaecyparis (A. V. Smith 1940). Smith stated: "Chamaecyparis, the southern white cedar, is often an indicator of the pitcher plant" [it appears this was the Cypress Creek station].

(5.) Fresh Pond/Angels Bog: Plitt 9/23/1905, 6/6/1914 (see Sipple 1999, pp.371,382). "...reported from Angel's Bog (Smithsonian Institution, 1974; Clyde Reed, personal communication)...we did not observe it at the site until 1979, when specimens were transplanted there by a Virginia horticulturalist." (Sipple & Klockner 1984; also see Sipple 1993,p.455). Thus it appears the original population disappeared, and those now existing are introduced.

(6.) Herald Harbor: Norman E. Miller, a resident of Herald Harbor,

transplanted some to his garden (unsuccessfully) from a local wetland in the 1950's. Chamaecyparis has been recorded from a Herald Harbor site; presumably, this was the Sarracenia station.

(7.) Said to have been introduced to a small site at Buckingham Cove,

off Manhattan Beach Road. (Wayne Klockner, personal communication, ca. 1976).

(8.) Round Bay Bog (Whigham 1981). Seen by Sipple 6/26/1982... "Planted by VA horticulturist" (Sipple 1993). "...apparently introduced to the site by a Virginia horticulturalist." (Sipple & Klockner 1984).

(9) Arden Bog: 1998 (Sipple 1999, p.382).

658. Sarracenia purpurea var. venosa (Raf.) Fern. B&B: unlisted.

(Southern Pitcher-plant)

Found from New Jersey southward. "Shorter, broader leaves [than var. purpurea], the hollow part less than thrice as long as broad" (Gleason & Cronquist 1963).

County Occurrence: Reported from A. A. Co. by Shreve (1910), according to Broome et al Dec. 1979. Shreve (pp.185,440) refers to the plants as S. purpurea; any reference to variety is the work of Broome et al.
659: Sarracenia rubra Walter

(Sweet Pitcher-plant)

- Drosera sp.

(Sundews) B&B.526

Records: Waterford (Plitt 4/29/1905). Pond near Sawmill Branch (Plitt 4/22/1899, 5/30/1899, 8/5/1899).

660. Drosera filiformis Raf. B&B.526

(Thread-leaf Sundew) Small native insectivorous herb.

Habitat: "wet sand, near the coast" (Gray 1867).

Records: Cypress Creek Savanna (Whigham 1981). This station consists of plants introduced by a Virginia horticulturist in 1979 (Sipple & Klockner 1984). Round Bay Bog (introduced by Virginia horticulturist (Sipple 1993, p.65)

661. Drosera intermedia Hayne 1800. Shr.440, B&B.526

(Spatulate-leaved Sundew)

Small native insectivorous herb.

(1) Sawmill Pond at Glen Burnie (Plitt 7/19/1899). Glenburnie Bog (C. E. Waters 1905). Bog at Glenburnie (M. A. Chrysler, in Shreve et al 1910; p.185).

(2) 2 mi. NW of Gibson I., in a sedge bog Sept. 1950, N. Hotchkiss (US) (Stieber 1967). 3 mi. (NW of Gibson I., presumably), in a sphagnum bog 5/27/1953, E. P. Killip (US) (Stieber 1967). In shallow water and on a rotten log near the shore of a pond (vague) 8/18/1960, N. Hotchkiss (US) (Stieber 1967). Angel's Bog (Whigham 1981, Sipple & Klockner 1984). Angels Bog 6/10/1992, 8/7/1992 (Sipple 1993).

(3) North Grays Bog (Whigham 1981).

(4) South Gray's Bog (Whigham 1981, Sipple & Klockner 1984).

(5) Cypress Creek Savanna (Whigham 1981, Sipple & Klockner 1984). "6/18/1993...No sign of the spatulate-leaved sundew" (Sipple 1999, p.369). Site affected by saltwater intrusion.

(6) Eagle Hill Bog (Whigham 1981, Sipple & Klockner 1984). Eagle Hill Bog 7/12/1986, 6/10/1992 (Sipple 1993). Eagle Hill Bog 8/11/90, Longbottom 1003 (AACC).

(7) Round Bay Bog: Noted by Sipple,6/26/1982. Apparently introduced by a Virginia horticulturist. (Sipple & Klockner 1984; Sipple 1999,p.380).

(8) Arden Bog (Sipple 1999, p.382).

(9) Main Creek Bog: Broersma-Cole & Sipple, 1998. (Sipple 1999, p.379).

662. Drosera rotundifolia L. 1753. Shr.440, B&B.526

(Round-leaved Sundew) Small native insectivorous herb.

Habitat: "Peat bogs" (Gray 1867). "In bogs or wet sand" (Britton 1901).

Frequency: "Common in moist sandy forests in the Coastal Zone; infrequent in moist sandy forests and bogs in the Midland and Mountain Zones" (Shreve et al 1910).

Heritage Rating: 1988: C (State Declining). 1991: Watchlist.

Records: Sawmill Pond at Glen Burnie (Plitt 7/19/1899). Glenburnie Bog (C. E. Waters 1905). Bog at Glenburnie (M. A. Chrysler, in Shreve et al 1910; p.185). 2 mi. NW of Gibson I., in a fresh pond, rare in a sedge bog 9/26/1950, Neil Hotchkiss (US) (Stieber 1967). Angels Bog (Whigham 1981, Sipple & Klockner 1984). Angel's Bog 8/7/1992 (Sipple 1993). Arden Bog 1998 (Sipple 1999, p.382).

Herbaria: US (Stieber 1971).

Order Rosales

74. Podostemaceae (River-weed Family)

663. Podostemum ceratophyllum Michx. 1803. Shr.440, B&B.526

(Threadfoot, Hornleaf Riverweed) Small native aquatic herb.

Habitat: "Tenaciously attached to loose stones in the bottom of shallow streams" (Gray 1867). "Firmly attached to stones in shallow streams" (Britton & Brown 1913).

Heritage Rating: 1988: C (State Declining). 1991: Watchlist.

Records: Patuxent Wildlife Refuge, in rapidly flowing waters of the Patuxent R. 10/13/1949, Elmer G. Worthley (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

75. Crassulaceae (Orpine Family)

664. Sedum acre L. Shr.440, B&B.529

(Mossy Stonecrop)

Low creeping fleshy perennial herb introduced from Europe.

665. Sedum sarmentosum Bunge B&B.529

(Trailing Stonecrop)

Low creeping perennial introduced from Europe. Native of China & Japan.

666. Chrysoplenium americanum Schwein. 1832 Shr.441, B&B.538

(Water-mat) Low spreading semi-aquatic herb.

Habitat: "Cold wet places" (Gray 1867). "In wet, shaded places" (Britton 1901). "In swamps and flood plains" (Shreve et al 1910).

Frequency: "Throughout the state; common" (Shreve et al 1910). "Infrequent on the Coastal Plain; common elsewhere" (Brown & Brown 1984).

Records: Near Brooklyn (A. A. Co.? Plitt 4/12/1899).

667. Heuchera americana L. 1753. Shr.441, B&B.536

(American Alumroot) Native perennial herb.

Habitat: "Rocky woodlands" (Gray 1867). "In dry or rocky woods" (Britton 1901). "In moist and dry forests" (Shreve et al 1910).

Frequency: "Rare in the Coastal Zone, common in the Midland and Mountain Zones" (Shreve et al 1910).

Sightings: Chase Creek watershed (Berry property, ca. 1980). This station is in a rich ravine bottom north of the tenant house.

668. Hydrangea arborescens L. 1753. Shr.441, B&B.114

(Wild Hydrangea) Native deciduous shrub.

Habitat: "Rocky banks" (Gray 1867). "On rocky stream or river banks" (Britton 1901). "In moist forests and along streams" (Shreve et al 1910). Rich soil; rocky slopes in cool moist ravines.

Frequency: "Rare in the Coastal Zone, common in the Midland and Mountain Zones" (Shreve et al 1910).

Records: Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: Brewer Creek upper ravine. Joyce Lane opposite Mylander property. Martins Pond ravine. Chase Creek watershed (Rucker's ravine, Lot 706).

Herbaria: CBC (CBC 1993).

669. Itea virginica L. 1753. Shr.441, B&B.116

(Virginia Willow, Tassel-white, Virginia Sweetspire)

Native deciduous shrub.

Habitat: "Wet places" (Gray 1867, Britton 1901). Swamps & floodplains.

Frequency: "Coastal Zone" (Shreve et al 1910).

Records: Wayson's Corner, swamps of the Patuxent R. 6/16/1907, Forrest Shreve (US) (Stieber 1967). Cranberry swamp [Cypress Creek] C.C.Plitt 6/24/1907; see Sipple 1999, p.355. NE of Bowie at the border of a swamp near Lemon's Bridge 7/4/1928, E. C. Leonard (US) (Stieber 1967). 3 mi. NW of Gibson Island, at edge of a fresh pond 5/27/1953, E. P. Killip (US) (Stieber 1967). Cypress Creek Cedar Swamp (Sipple & Klockner 1984). North Grays Bog, South Grays Bog, Angels Bog, Cypress Creek Savanna (Whigham 1981). One north-county wooded swamp station mapped by Sipple 1978. Jug Bay Wetlands Sanctuary (Mason et al 1991). Governors Bridge gravel pits (Longbottom 1991).

Sightings: Eagle Hill Bog (dam). Severn Run above Dicus Mill (one small plant June 1987 by Williams).

Herbaria: Shreve's specimen may be part of a series (#1544-1554) he collected 6/16/1907. US (Stieber 1971).

670. Penthorum sedoides L. 1753. Shr.440, B&B.532

(Ditch Stonecrop, Virginia Stonecrop)

Erect native perennial herb.

671. Saxifraga virginiensis Michx. 1803. Shr.441, B&B.534

[Micranthes virginiensis (Michx.) Small 1903]

(Early Saxifrage) Native perennial herb.

672. Hamamelis virginiana L. 1753. Shr.441, B&B.121

(Witch Hazel) Large native deciduous shrub, nearly arborescent.

Habitat: "Damp woods" (Gray 1867). "In low woods" (Britton 1901). "In moist forests and flood plains" (Shreve et al 1910). Low mossy woods, in steep swales and lower slopes with Kalmia latifolia.

Frequency: "Throughout the state; being rare in the Coastal Zone, common in the Midland and Mountain Zones" (Shreve et al 1910).

Records: Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: Chase Creek watershed (North-facing slopes near Ruckers Pond). Truxtun Park. Mill Creek (McCann property). Martins Pond ravine. South side of Sewell Spring Branch.

673. Liquidambar styraciflua L. 1753. Shr. 441, B&B.123

(Sweetgum) Large native deciduous tree.

Habitat: "Moist to swampy woods" (Stieber 1971). "Chiefly in bottomlands, but often seeding in abandoned fields" (Brown & Brown 1972).

Frequency: "Confined to the Coastal Zone, where it is one of the commonest of the forest trees" (Shreve et al 1910). Essentially absent from the Piedmont-like highlands of the Severn.

Records: Near St. James Church, common tree in a moist woods 6/11/1966, Stieber 252 (LCU) (Stieber 1967). Throughout CBC; infrequent to moderately abundant in abandoned fields and all types of hardwood forest - the most common local tree species; Higman 63 (CBC) (Higman 1977). Six county wooded-swamp stations mapped by Sipple 1978. Upland or wetland control habitats at South Grays Bog, Eagle Hill Bog (Whigham 1981). Round Bay Bog, Cypress Creek Savanna (Whigham 1981, Sipple & Klockner 1984). Galesville area - standing water 9/29/1987 (Sipple 1993). Back Creek watershed: SPCA property (Williams 1989). Jacobsville Park, Lake Waterford Park, Quiet Waters Park, Poplar Ridge Park, Governors Bridge gravel pits (Longbottom 1991). Hancock's Resolution (Envirens 1991). Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: Severn Run Natural Environment Area (above Dicus Mill Road). Forked Creek (Sackett property). Truxtun Park. Brewer Pond watershed. Gibson Island. Corcoran Woods – trees numerous on heavy soils May 2002.

Herbaria: CBC. US & LCU (Stieber 1971).

78. Platanaceae (Plane-tree Family)

674. Platanus occidentalis L. 1753. Shr.441, B&B.124

(American Sycamore, Buttonwood) Large native deciduous tree.

Habitat: "Along streams and in wet woods" (Britton 1901). "Along streams and on flood plains" (Shreve et al 1910). Rich silty swales and lowland soils.

Frequency: "Throughout the Coastal and Midland Zones" (Shreve et al 1910).

Records: Manresa, large tree at edge of a moist woods 5/2/1966, Stieber 253 (LCU) (Stieber 1967). Throughout CBC; frequent dominant or co-dominant canopy tree on stream floodplains, ditches, etc., Higman 459 (CBC) (Higman 1977). Back Creek watershed (Williams 1989). Jacobsville Park, Quiet Waters Park, Lake Waterford Park, Governors Bridge gravel pits (Longbottom 1991).

Sightings: Chase Creek watershed (Rucker, Berry, Iliff properties). Winchester Pond (Rich Property). Pleasant Plains. Rt. 648 near Joyce Lane, Arnold. Peter Perry's floodplain (Patuxent R. at Stocketts Run). Corcoran Woods – trees on better-drained heavy soils May 2002.

Herbaria: CBC. US & LCU (Stieber 1971).

79. Rosaceae (Rose Family)

675. Agrimonia microcarpa Wallr. 1842. B&B.552

(Agrimonia pumila Muhl. 1813) Shr.443

(Small-fruited Agrimony) Small native perennial herb.

676. Agrimonia parviflora Soland. 1789. Shr.443, B&B.552

(Agrimonia parviflora Ait.)

(Small-flowered Agrimony, Many-flowered Agrimony)

Native perennial herb.

Habitat: "Woods and glades" (Gray 1867). "In moist or dry soil" (Britton 1901). "In open situations" (Shreve et al 1910). "Grassy fields and near estuarine creeks" (Stieber 1971).

Records: Java Farm, infrequent in grassy old fields south of main building area; Ivy Neck, solitary near drainage to Cheston Creek, in pasture; Higman 46 (CBC) (Higman 1977).

Frequency: "Throughout the state; common" (Shreve et al 1910).

Herbaria: CBC. US (Stieber 1971).

677. Agrimonia rostellata Wallr. 1842. B&B.552

(Agrimonia striata Bicknell, not Michx.)

(Woodland Agrimony, Roadside Agrimony)

Native perennial herb.

Habitat: "In dry woods" (Britton 1901). "Rocky woods, alluvium, etc." (Robinson & Fernald 1908).

Frequency: "Infrequent in Piedmont; rare on the Coastal Plain" (Brown & Brown 1984).

Records: "Infrequent along a path near Muddy Creek" (Stieber 1971). Java Farm, infrequent along old entrance road through mixed hardwood forest, Higman 1079 (CBC) (Higman 1977).

Herbaria: CBC. US (Stieber 1971).

680. Agrimonia striata Michx. 1803 (not Bicknell). B&B.550

(Agrimonia brittoniana Bicknell 1896)

(Striate Agrimony, Britton's Agrimony)

Tall native perennial herb.

Habitat: "Along thickets and roadsides" (Britton 1901). Open woods.

Heritage Rating: 1988: B2 (Highly State Rare). 1991: Endangered.

Records: Near St. James Church, at the edge of a thicket 8/12/1966, Stieber 276 (LCU) (Stieber 1967).

Herbaria: LCU (Stieber 1971).

681. Alchemilla microcarpa Boiss. & Reut. B&B.550

(Lady's Mantle) Low annual herb.

Habitat: "Waste places and lawns" (Brown & Brown 1984).

Sightings: Community College Woods by Dan Saffer (Longbottom, pc 1991).

682. Amelanchier arborea (Michx. f.) Fernald B&B.140

[Amelanchier canadensis (L.) Medic. of older manuals] Shr.444

(Downy Serviceberry, Shadbush)

Small native deciduous tree.

Habitat: "In dry forests, preferring rocky slopes" (Shreve et al 1910).

Frequency: "Most common in the Midland Zone" (Shreve et al 1910).

Records: Patuxent R. at Rt. 50, medium-sized shrub at edge of a moist woods 6/27/1966, Stieber 284 (LCU) (Stieber 1967). Ivy Neck, infrequent in hardwood forest near head of Scaffold Creek, Higman 594, 844 (CBC) (Higman 1977). Upland habitat at North Grays Bog (Whigham 1981). Chartridge 4/19/1982 (Sipple 1993). Back Creek watershed (Williams 1989). College Creek Woods (Williams 1986a).

Sightings: Chase Creek watershed (Rucker property). Ridges at Martins Pond. Brewer Pond watershed.

Herbaria: CBC. US & LCU (Stieber 1971).

683. Amelanchier canadensis (L.) Medicus 1793. B&B.140

(Swamp Serviceberry) Upright native deciduous shrub.

Habitat: Shrub swamps and wet soils.

Records: Round Bay (Plitt 4/22/1899). Waterford (Plitt 4/29/1905). Shadyside, open woods 4/30/1950, L. B. Smith (US) (Stieber 1967). Patuxent Community Pond, in alder-like clumps at edge of a wet woods 5/2/1967, Stieber 285 (LCU) (Stieber 1967). Java Farm, solitary on Hog Island, Higman 117 (CBC) (Higman 1977). North Grays Bog, South Grays Bog, Round Bay Bog, Eagle Hill Bog, Angels Bog (Whigham 1981). Cypress Creek Savanna (Whigham 1981, Sipple & Klockner 1984). Cypress Creek Cedar Swamp (Sipple & Klockner 1984). Picture Spring Branch (Nevamar Pond; Ecological Analysts 1983). Beachwood Park (Longbottom 1991). Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: Sullivan Cove Marsh.

Herbaria: CBC. US & LCU (Stieber 1971).

ADD: Crataegus sp.

684. Crataegus coccinea L. Shr.444

(Crataegus intricata Lange) B&B.148

(Scarlet Haw) Small native tree.

685. Crataegus pruinosa (Wendl.) K. Koch 1853. B&B.156

(Mespilus pruinosa Wendl. 1823)

(Waxy-fruited Hawthorn) Small native tree.

686. Crataegus punctata Jacq. Shr.444, B&B.150

(Dotted Hawthorn) Small native tree with obovate leaves.

Habitat: "Border of woods and abandoned fields" (Brown & Brown 1972).

Frequency: Unknown; occurs in Allegany Co.

Sightings: Tentative identification; may be C. crus-galli: Peter Perry property (large specimen near Patuxent River, above Stocketts Run 5/18/91)

687. Duchesnea indica (Andr.) Focke 1888. Shr.443, B&B.539

(Fragaria indica Andr. 1807)

(Duchesnea fragaroides Smith)

(Indian Strawberry, Mock Strawberry)

Perennial trailing herb naturalized from India.

688. Fragaria virginiana Duchesne 1766. Shr.443, B&B.539

(Virginia Wild Strawberry) Native perennial herb.

Habitat: "In dry soil" (Britton 1901). "Rich moist woodlands, fields, etc." (Robinson & Fernald 1908). "In open dry situations" (Shreve et al 1910).

Frequency: "Throughout the state; common" (Shreve et al 1910).

Records: Patuxent Community Pond, sandy soil 5/2/1966, Stieber 254 (LCU) (Stieber 1967). Manresa, along the RR tracks in gravelly sand 5/5/1966, Stieber 255 (LCU) (Stieber 1967). Java Farm, infrequent at old entrance gate, Fox Creek culvert near new entrance, and in glade at end of Springhouse Road; all sites are partly shaded & relatively moist; Higman 622 (CBC) (Higman 1977). Beachwood Park (Longbottom 1991).

Herbaria: CBC. US & LCU (Stieber 1971).

689. Geum canadense Jacq. Shr.443, B&B.548

(Geum album Gmel.)

(White Avens) Native perennial herb. Small white petals.

690. Physocarpus opulifolius (L.) Maxim B&B.127

[Opulaster opulifolius (L.) Kuntze.] Shr.442

(Ninebark) Native shrub.

691. Potentilla canadensis L. 1753. Shr.443, B&B.545

(Potentilla sarmentosa Muhl.)

(Potentilla pumila)

Further review of nomenclature may be necessary for some records (P. canadensis vs. P.

simplex).

(Common Cinquefoil, Five-finger)

Low decumbent or prostrate native herb. First flower at first internode.

Habitat: "Dry soil" (Gray 1867). "Dry sandy soil" (Robinson & Fernald 1908). "In moist and dry forests" (Shreve et al 1910). "Abandoned fields and wood margins" (Stieber 1971).

Frequency: "Throughout the state; common" (Shreve et al 1910). "One of our most common weeds on acid, depleted soil" (Brown & Brown 1984).

Records: No locale 4/25/1881, J. D. Smith (US) (Stieber 1967) [This may have been along Annapolis Road, near Furnace Creek; see Smith's record for Chamaedaphne on that date]. Churchton, dry field near Cape Anne 4/25/1948, L. B. Smith (US) (Stieber 1967). Near St. Janes Church, edge of a field 5/21/1966, Stieber 258 (LCU) (Stieber 1967). Patuxent Community Pond, sandy ground 5/2/1967, Stieber 257 (LCU) (Stieber 1967). Java Farm, solitary in mixed hardwood forest near old entrance gate, Higman 664 (CBC) (Higman 1977). Jug Bay Wetlands Sanctuary (Mason et al 1991). Beachwood Park, Jacobsville Park, Governors Bridge gravel pits

(Longbottom 1991).

692. Potentilla intermedia L. 1767. B&B.543

(Downy Cinquefoil) Upright perennial herb adventive from Europe.

Habitat: "Roadsides and waste places" (Gray 1867). "Waste ground and roadsides" (Britton & Brown 1913).

Records: Patuxent R. at Rt. 50, sandy clay roadside 6/7/1966, Stieber 259 (LCU) (Stieber 1967).

Herbaria: LCU (Stieber 1971).

693. Potentilla norvegica L. 1753. B&B.543

(Potentilla monspeliensis L. 1753) Shr.443

(Rough Cinquefoil, Barren Strawberry)

Native (or European) upright annual or biennial herb. 3 leaflets.

Habitat: "Fields" (Gray 1867). "In open dry situations" (Shreve et al 1910). "In fields, pastures and roadsides, usually in dry soil" (Jaques 1959).

Frequency: "Throughout the state; being most common in the Coastal Zone" (Shreve et al 1910). "A common weed in clearings, pastures, fallow and cultivated fields..." (Fogg 1956).

Records: Java Farm & Ivy Neck, solitary on waste ground near buildings, Higman 932, 988 (CBC) (Higman 1977).

Herbaria: CBC. US (Stieber 1971).
694. Potentilla recta L. 1753. B&B.543

(Potentilla sulphurea Lam. 1778)

(Rough-fruited Cinquefoil, Sulfur Cinquefoil)

Erect perennial herb adventive from Europe. 5-7 palmately compound leaflets. Sulfur-yellow flowers.

695. Potentilla reptans L. B&B.545

(Creeping Cinquefoil)

Creeping herb naturalized from Europe.

696. Potentilla rivalis Nutt. B&B.543

(Five-finger)

Annual or biennial herb. "A western species" (Britton & Brown 1913).

"Moist fields and river banks" (Brown & Brown 1984).

697. Potentilla simplex Michx. 1803. B&B.545

(Potentilla canadensis var. simplex Torr. & Gr. 1840)

Further review of some records may be necessary (P. simplex vs. P. canadensis).

(Old-field Cinquefoil) Native trailing or semi-erect perennial herb.

First flower at second internode.

698. Prunus angustifolia Marsh. 1785 B&B.176

(Prunus chicasa Michx. 1803.

(Chickasaw Plum) Spiny shrub or small tree introduced from Texas & Oklahoma and naturalized.

699. Prunus avium L. 1755. B&B.178

(Sweet Cherry, Mazzard Cherry)

Large deciduous tree introduced from Eurasia.

700. Prunus cerasus L. B&B.180

(Sour Cherry, Morello Cherry) Small tree introduced from Asia.

Habitat: Cultivated; may escape to fields and borders.

Records: In Virginia pine woodland at Hancock's Resolution (Envirens

1991).

(Amygdalis persica L. 1753)

(Peach) Small cultivated tree, native of Asia.

Habitat: Escaping to fence rows and roadsides.

Records: Java Farm, solitary at main building area, persistent after cultivation, Higman 598, 867 (CBC) (Higman 1977).

Sightings: Chase Creek watershed (Rucker property).

Herbaria: CBC. US (Stieber 1971).

702. Prunus serotina Ehrh. 1788. Shr.444, B&B.180

[Padus virginiana (L.) Mill. 1768]

(Black Cherry, Wild Black Cherry) Large native tree. Fruit purple to black.

703. Prunus virginiana L. 1753 B&B.180

[Padus nana (Du Roi) Roemer. 1797

(Choke Cherry) Small native tree or shrub. Fruit red to purple.

704. Pyrus arbutifolia L. f. 1781. B&B.132

[Aronia arbutifolia (L.) Elliott 1821] Shr.444

(Mespilus arbutifolia L. 1753)

(Red Chokeberry) Tall native shrub.

Habitat: "Swamps and low woods" (Robinson & Fernald 1908). "In moist forests and swamps" (Shreve et al 1910). "Swamps and wet woods" (Britton & Brown 1913). Sandy pond borders.

Frequency: "Throughout the state; common" (Shreve et al 1910).

Records: No locale 10/25/1879, J. D. Smith (US) (Stieber 1967). Vicinity of Forest Home (Plitt 5/2/1902). Waterford (Plitt 4/29/1905). Magothy R. 6/3/1921, Fred V. Coville (US) (Stieber 1967). Herald Harbor, small shrub 8/17 & 8/21/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Cape Anne, border of a woods 4/25/1948, L. B. Smith (US) (Stieber 1967). 3 mi. NW of Gibson I., in a sphagnum bog 5/27/1953, E. P. Killip (US) (Stieber 1967). Waysons Corner, 1-3 dm. shrub in a moist woods 7/27/1966, Stieber 282 (LCU) (Stieber 1967). Bog habitat at Round Bay Bog, upland habitat at North Grays Bog (Whigham 1981). Cypress Creek Savanna, Cypress Creek Cedar Swamp (Sipple & Klockner 1984). Angels Bog 9/30/90, Longbottom 1281 (AACC). Cypress Creek Bog 10/13/90, Longbottom 1326 (AACC). Beachwood Park, Jacobsville Park, Poplar Ridge Park, Lake Waterford Park, Governors Bridge gravel pits, (Longbottom 1991). Jug Bay Wetlands Sanctuary (Mason et al 1991). Hancock's Resolution (Envirens 1991).

Sightings: Sacketts Pond. Severn Run Natural Environment Area at Dicus Mill Road. Sullivans Cove Pond. Yantz Creek headwaters swamp 1/4/89. Jackson Grove Road area. Plum-Gumbottom Creek at road crossing 10/15/88. Downs Park 10/12/90. Swamp at SW corner Boyd Pond (Longbottom pc 1991).

Herbaria: AACC. US & LCU (Stieber 1971).
705: Pyrus calleryana Decne. B&B.132

(Callery Pear, "Bradford Pear")

Medium-sized deciduous tree, introduced from China (1908) & much-planted for its bloom; narrow forks typical, easily split. The "Bradford" selection most common. Small fruit carried by birds, apparently.

Sightings: Isolated volunteers at Chase Creek watershed (Lots 703, 705, 706 Pines on Severn 1999; also near Rucker's Pond 1999).
706. Pyrus communis L. 1753. B&B.132

(Pear) Cultivated tree introduced from Europe.

707. Pyrus floribunda Lindl. B&B.132

[Aronia prunifolia (Marsh.) Rehder]

(Aronia atropurpurea Britton 1901) Shr.444

[Pyrus arbutifolia var. atropurpurea (Britton) Robinson]

(Purple Chokeberry) Native deciduous shrub.

Habitat: In open wet situations" (Shreve et al 1910).

Frequency: "Mountain Zone" (Shreve et al 1910).

Heritage Rating: 1988: B3 (State Rare). 1991: Watchlist. 1994: S-3 Watchlist.

Records: Manresa, moist woods 6/20/1966, Stieber 283 (LCU) (Stieber 1967). Lake Waterford Park, Poplar Ridge Park (Longbottom 1991).

Herbaria: LCU (Stieber 1971).

708. Pyrus malus L. 1753 B&B.134

(Malus pumila Mill.)

(Malus communis DC)

(Malus malus Britton)

(Common Apple) Cultivated tree introduced from Europe.

709. Pyrus melanocarpa (Michx.) Willd. 1809 B&B.132

[Aronia nigra (Willd.) Britton] Shr.444

[Aronia melanocarpa (Michx.) Britton]

[Aronia melanocarpa (Michx.) Ell.]

(Mespilus arbutifolia var. melanocarpa Michx. 1803)

(Black Chokeberry) Native shrub.

Habitat: "In swamps and bogs" (Shreve et al 1910). "Swamps, bogs or dry habitats" (Brown & Brown 1972).

Frequency: "Mountain Zone; frequent" (Shreve et al 1910).

Records: Vicinity of Forest Home (Plitt 5/2/1903). Java Farm, solitary at Fox Point and Hog Island, Higman 532 (CBC) (Higman 1977).

Herbaria: CBC. US (Stieber 1971).

710. Rosa canina L. 1753. Shr.444, B&B.170

(Dog Rose)

Prickly shrub introduced from Eurasia, naturalized. Petals pink to white. Flowers larger than R. multiflora, but fewer (ca. 4/end vs. 15-20). Blooms later (late June).

711. Rosa carolina L. 1753. B&B.172

(Rosa humilis Marsh. 1785) Shr.443

Not to be confused with the swamp rose, R. carolina of older manuals.

(Carolina Rose; Low Pasture Rose)

Native prickly shrub.

712. Rosa eglanteria L. B&B.170

(Rosa rubiginosa L. 1771)

(Eglantine, Sweet-brier)

Prickly shrub naturalizing from Europe. Calyx-lobes mostly persistent.

Habitat: "Roadsides and thickets" (Gray 1867). "Thickets, pastures and roadsides" (Brown & Brown 1972).

Records: Farm area off Rt. 2, S. of Lothian, at the edge of an open woods, small shrub 6/27/1966, Stieber 277 (LCU) (Stieber 1967).

Herbaria: LCU (Stieber 1971).

713. Rosa rubiginosa var. micrantha (Sm.) Lindl. B&B: unlisted.

(Rosa micrantha J. E. Smith)

(Smaller-flowered Sweetbrier)

Slender shrub introduced from England. Calyx-lobes deciduous.

Habitat: "In thickets, pastures and waste places" (Britton & Brown 1913).

Records: Java Farm, infrequent in old fields, Higman 377, 761 (CBC) (As R. micrantha; Higman 1977).

Herbaria: CBC. US (Stieber 1971).

714. Rosa multiflora Thunb. B&B.169

(Multiflora Rose, Japanese Rose)

Asiatic; escaped from cultivation. Large arching prickly shrub.

715. Rosa palustris Marsh B&B.172

(Rosa carolina L. of older manuals) Shr.443

(Swamp Rose) Native shrub.

716. Rosa virginiana Mill. 1768. B&B.170

(Rosa lucida Ehrhardt 1789)

(Rosa humilis Marsh. var. lucida Best 1887)

(Virginia Rose, Pasture Rose, Low Rose, Dwarf Wild-rose, Glossy Rose)

Native shrub.

717. Rubus allegheniensis Porter 1896. Shr.442, B&B.166

(Common Blackberry, Highbush Blackberry, Mountain Blackberry)

Upright native shrub. Angled stems; stout prickles; glandular hairs near growing tips.

718. Rubus argutus Link. 1822 B&B.167

(Tall Blackberry)

Tall upright shrub; stems angled, prickly; leaflets pubescent beneath.

719. Rubus canadensis L. 1753 Shr.442, B&B.166

[Rubus milspaughii (L.) Britton 1891]

(Smooth Blackberry, Milspaugh's Blackberry)

Upright shrub. Stem angled, few or no prickles; leaflets glabrous beneath.

Habitat: "Rocky hills and copses" (Gray 1867). "In thickets and rich woods" (Britton 1901). "In dry open situations" (Shreve et al 1910).

Frequency: "Throughout the state; common" (Shreve et al 1910). "Only in the Mountain Zone" (Brown & Brown 1972).

Records: Curtis Bay (A. A. Co.? Plitt 5/11/1899).

720. Rubus cuneifolius Pursh 1814. Shr.442, B&B.166

(Sand Blackberry, Knee-high Blackberry)

Upright native shrub. Stems angled, hairy between stout prickles.

721. Rubus enslenii Trattinick B&B.164

(Southern Dewberry, Enslen's Dewberry)

Native trailing prickly shrub. 1-2 flowers/fruits per branch.

722. Rubus flagellaris Willd. B&B.162

(Common Dewberry, Northern Dewberry)

Trailing prickly shrub. 2-5 flowers/fruits per branch.

723. Rubus hispidus L. 1753. Shr.442, B&B.162

(Swamp Dewberry, Hispid Swamp Blackberry, Bristly Dewberry)

Trailing native shrub; bristly between prickles; leaves thick, glossy.

724. Rubus laciniatus Willd. B&B.168

(Cut-leaved Blackberry)

Tall erect shrub introduced from Europe. Flowers rose-colored.

725. x Rubus neglectus Peck. 1869 B&B: Not listed.

(Rubus strigosus x occidentalis Aust. 1870)

(Purple Wild Raspberry)

Prickly shrub with white flowers and purple fruit.

Habitat: "In dry or rocky soil" (Britton & Brown 1913).

Records: Manresa, in a moist woods 6/1/1966, Stieber 269 (LCU) (Stieber 1967).

Herbaria: LCU (Stieber 1967).

726. Rubus occidentalis L. 1753. Shr.442, B&B.164

(Black Raspberry)

Arching native shrub; stems round, glaucous; prickles strong, hooked.

727. Rubus parviflorus Nutt. 1818. B&B: Not listed.

(Thimbleberry, Salmon Berry)

Native branching shrub with simple leaves.

728. Rubus phoenicolasius Maxim B&B.164

(Wineberry, Wine Raspberry)

Prickly shrub introduced from Japan. Canes round, red, arching, root at tips.

729. Rubus trivialis Michx. 1803. B&B.164

(Southern Dewberry, Low-Bush Blackberry)

Prostrate native prickly shrub with persistent thick leaves.

730. Sanguisorba minor Scop. 1772 B&B.552

[Sanguisorba sanguisorba (L.) Britton 1894] Shr.443

(Poterium sanguisorba L. 1753)

(Garden Burnet, Salad Burnet)

Erect perennial herb adventive from Eurasia.

Odenton 6/6/1905, H. D. House (US) (Stieber 1967).

731. Spiraea prunifolia Sieb. & Zucc. B&B.127

(Spiraea)

Deciduous shrub introduced from Japan and China.