Compiled by Colby B. Rucker Preface: Use of Copyrighted Material
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- Subdivision Angiospermae Class Monocotyledoneae Order Pandanales 18. Typhaceae (Cattail Family)
- 19. Sparganiaceae (Bur-reed Family)
- Order Najadales 20. Zosteraceae (Pondweed Family)
- 21. Najadaceae (Naiad Family)
- 22. Alismaceae (Water-plantain Family)
- 23. Hydrocharitaceae (Frogs-bit Family)
Order Coniferales17. Pinaceae (Pine Family) 55. Chamaecyparis thyoides (L.) B.S.P. 1888. Shr.392, B&B.15 (Cupressus thyoides L. 1753) (Chamaecyparis sphaeroidea Spach 1842) (Atlantic White Cedar, Southern White Cedar) Native tree.
(1) "Cypress Swamp near Round Bay...an arm of the Magothy" Plitt 5/28/1904 (Sipple 1999, p.354). Cypress Creek 10/24/1951, N. Hotchkiss & F. M. Uhler (US) (Stieber 1967). Cypress Creek, north arm 5/27/1953, E. P. Killip (US) (Stieber 1967). In Cypress Creek bog, a 4.5 m. tree 8/18/1961, N. Hotchkiss & E. C. Leonard (US) (Stieber 1967). Cypress Creek Savanna (Sipple & Klockner 1980, 1984); 6/10/1992 (Sipple 1993). Cypress Creek Cedar Swamp (Sipple & Klockner 1980, 1984). Chartwell Branch at Severn River 3/26/1991 (Sipple 1993). (2) "Cypress...near Bear Creek...off the Severn" Plitt 4/1/1905 (Sipple 1999, p.360). (3) Herald Harbor 7/22/1928, J. A. Stevenson (US) (Stieber 1967). East side of Herald Harbor, a few trees at the edge of a small brackish marsh 10/31/1950, N. Hotchkiss & F. M. Uhler (Fish & Wildlife Herbarium 7303, now MARY 032272). Herald Harbor 10/31/1950, N. Hotchkiss (US) (Stieber 1967). (4) Severn River, near Indian Landing 7/22/1928, J. A. Stevenson (US) (Stieber 1967). (5) Indian Creek Branch 4/30/1983 (Sipple 1993). (6) Manresa, 5 m. tree near edge of a woods 9/9/1966 Stieber 14 (LCU) (Stieber 1967). (7) Sullivan Cove (Longbottom 1993). Sightings: Sullivans Cove pond – 2 stations. Cypress Creek, edge of marsh east of Colonial Auto Parts, two trees (one with large burl) ca. 1975; both dead ca. 1980. Yantz Creek headwaters swamp (4 trees ca. 1986). Stevens Creek (Litz Lake and magnolia swamp). Indian Creek Branch. Near Severn shore below Chartwell ponds. Forked Creek (Bluff Point property, grove near dam; deeded "conservation area"). Rock Cove: one large tree on shore at Bluff Point. Reported 3/11/1987 by Bill Jenkins (A. A. Co. P&Z) from upper watershed of Cockey Creek near Luke Drive. Cypress Creek Savanna; most of stand killed by saltwater intrusion during drought years ca. 1989. In 2001, a planting of C. thyoides seedlings grown from seed from local bogs was made on the altered site of Sherwood Forest Pond. Herbaria: MARY. US & LCU (Stieber 1971. 56. Juniperus virginiana L. 1753. Shr.393, B&B.15 Juniperus virginiana L. var. crebra Fernald & Grise. Local trees are var. crebra, the more northern variety, as opposed to var. virginiana, which occurs from Va. southward (See Gleason & Cronquist 1963). (Eastern Redcedar) Native tree. Habitat: "Dry, mostly sterile or rocky soil" (Gray 1867). "Open situations and drier soils, now growing chiefly along roadsides and in abandoned fields" (Shreve et al 1910). Common on basic soils in limestone areas in other counties. Tidewater strands also chemically compatible. Frequency: "Common throughout the Coastal and Midland Zones; absent from the Mountain Zone" (Shreve et al 1910). Records: Wayson's Corner, 1 m. shrub, at the roadside bordering a moist woods 3/20/1966 Stieber 15 (LCU) (Stieber 1967). "At Java Farm and Ivy Neck" (As var. crebra; see Stieber 1971). "Throughout CBC; infrequent to moderately abundant in old fields, hardwood forests, & along fences or roads; infrequent on beaches or sandbars" Higman 112, 259, 1130 (CBC) (Higman 1977). Mapped as a strand species by Sipple 1978. Back Creek watershed (Williams 1989). Hancock's Resolution (Envirens 1991). Beverly-Triton Beach, Governors Bridge gravel pits, Kinder Park, Poplar Ridge Park (Longbottom 1991, 1993). Jug Bay Wetlands Sanctuary (Mason et al 1991). Sightings: Sullivan Cove (sandbar between cove and marsh 5/16/1992). Cove of Cork ("The Island"; see cover, Maryland Scenic Rivers: The Severn 1983). Martins Pond sandbar. Holly Beach Farm (beach at Moss Pond). Mouth of Blackhole Creek 9/28/91 (Longbottom pc). Herbaria: CBC. LCU (Stieber 1971). US (As var. crebra; see Stieber 1971). 57. Picea abies (L.) Karsten. B&B.10 (Picea excelsa Link.) (Norway Spruce) Tall pyramidal tree introduced from Europe. Drooping twigs; cones 4-7 in. Frequency: "Now established...at several places in Ct." (Britton 1905). "Frequently planted as an ornamental" (Brown & Brown 1972). It probably does not escape into the wild locally. Records: Kinder Park (Longbottom 1993) The origin (planted or naturalized) of Longbottom's specimen is not given. 58. Pinus echinata Mill. 1768. Shr.391, B&B.6 (Pinus mitis Michx.) (Shortleaf Pine, Yellow Pine) Large native tree. Needles slender, in 2's or 3's, 3"- 5".
59. Pinus rigida Mill. 1768. Shr.392, B&B.3 (Pitch Pine) Native tree. Needles in 3's, 3-5"long, 1.5 cm wide. Cones 6-12 cm. Habitat: "In dry, sandy or rocky soil" (Britton 1901). Bog margins. Frequency: "Throughout the state...on the sandy soils of the Western Shore District Pinus rigida is one of the principal constituents of the forest. Rare in other parts of the Western Shore District." (Shreve et al 1910). Common in a triangle, the points of which are Glen Burnie, Patuxent (Woodwardville) and Earleigh Heights, according to Besley (Md. Geological Survey of A. A. Co., 1917, p. 207). Records: Glenburnie (Shreve et al 1910). 6 m. tree in Cypress Creek Bog 8/18/1960, N. Hotchkiss & E. C. Leonard (US) (Stieber 1967). North Grays Bog; South Grays Bog; Angels Bog; Eagle Hill Bog (Whigham 1981). Cypress Creek Savanna, Cypress Creek Cedar Swamp (Sipple & Klockner 1984). Xeric site at Route 100 & Mountain Road 8/11/1989; Sawmill Pond 8/26/1989; Severn Run behind Millersville Post Office 12/21/1991 (Sipple 1993). Beachwood Park, Jacobsville Park, Kinder Park, Patuxent Community Pond, Sullivan Cove (Longbottom 1991, 1993). Sightings: Sullivans Cove cedar swamp. Head of Lake Litz. Lake Waterford 8/13/88. Herbaria: US (Stieber 1971). 60. Pinus serotina Michx. 1803. B&B.4 (Pond Pine) Native tree, much like P. rigida; cones smaller (4-6 cm), needles broader (1.5-2 mm). Habitat: "In swamps, S.E. Va. to Fla." (Britton 1901). "Ponds and swamps" (Britton & Brown 1913). Frequency: Pond pine has not been confirmed in Anne Arundel County. Whigham listed both P. rigida and P. serotina for four sites where Sipple & Klockner listed only P. rigida . Broome et al 1979 listed but three Maryland stations; one each in Caroline, Worchester, and Wicomico Counties. Records: North Grays Bog, South Grays Bog, Round Bay Bog, Eagle Hill Bog (Whigham 1981). 61. Pinus strobus L. 1753. Shr.391, B&B.3 (White Pine) Tall native tree. Needles in 5's.
62. Pinus taeda L. 1753. Shr.391, B&B.4 (Loblolly Pine, Old-field Pine, Bull Pine) Large native tree. Needles in 3's, 6"-10". Habitat: "Barren light soil" (Gray 1867). "Wet clay, or dry sandy soil" (Robinson & Fernald, 1908). Frequency: "Confined to the Coastal Zone" (Shreve et al 1910). Mostly south county, near the Bay. Records: Manresa, 15-20 m. tree at the edge of a moist woods 5/2/1966, Stieber 10 (LCU) (Stieber 1967). Java Farm, Higman 41, 415, 508 (CBC) (Higman 1977). One south-county wooded swamp station mapped by Sipple 1978. South Grays Bog (Sipple & Klockner 1984). Severn Run behind Millersville Post Office 12/21/1991; Jug Bay Wetland Sanctuary 5/1/1992 (Sipple 1993). Downs Park (Longbottom 1993). Sightings: Swale above Cypress Creek Savanna (one tree). Bay Ridge (one small station). Boyd Pond, swamp at SW corner 12/6/91 (Longbottom pc 1991). Herbaria: CBC. LCU (Stieber 1971). 63. Pinus virginiana L. 1753. Shr.391, B&B.8 (Virginia Pine, Scrub Pine) Early successional native tree. Needles in 2's, rarely 3. Trunk has thin bark, persistent deadwood. Cones recurving on branch. Habitat: "Barrens and sterile hills" (Gray 1867). "In sandy soil" (Britton 1901). Dry ridges, old fields, roadsides. Frequency: "Throughout the Coastal and Midland Zones, infrequent in the Mountain Zone" (Shreve et al 1910). Very common, county-wide. Best development at Bay Ridge and Annapolis Roads (state & national champions). Records: No locale, 10/31/1879, John Donnell Smith (US) (Stieber 1967). Farm area off Rt. 2, S. of Lothian, at edge of a field and woods March 1966, Stieber 13 (LCU) (Stieber 1967). Manresa, 20 m. tree at the edge of a woods with P. taeda 5/2/1966, Stieber 12 (LCU) (Stieber 1967). Java Farm & CBC, Higman 265 (CBC) (Higman 1977). Chartridge 6/19/1982; woods at Cypress Creek Savanna 3/12/1983; Severn Run behind Millersville Post Office 12/21/1991 (Sipple 1993). Back Creek watershed (Williams 1989). Hancock's Resolution (Envirens 1991). Beachwood Park, Broad Creek Park, Downs Park, Governors Bridge gravel pits, Kinder Park, Patuxent Community Pond, Poplar Ridge Park, Rieves Pond, Tar Cove Golf Course, "W" Section of Fort Meade (Longbottom 1991, 1993). Jug Bay Wetlands Sanctuary (Mason et al 1991). BG&E transmission line r/w off Marley Station Boulevard by Sipple 6/3/2000 (see The Maryland Naturalist, Summer 2001). Sightings: Chase Creek watershed (Rucker, Berry properties). Cattail Creek (Longbottom, pc 1991). Herbaria: CBC. US & LCU (Stieber 1971). 64. Taxodium distichum (L.) L. C. Richard Shr.392, B&B.12 (Cupressus disticha L. 1753) (Bald Cypress) Large native deciduous conifer. Habitat: "In swamps and along rivers" (Britton & Brown 1913). Frequency: "Confined to the Coastal Zone" (Shreve et al 1910). Occurs in Calvert County (Battle Creek). But one natural stand has been reported from Anne Arundel. Has been planted in local wetlands, and could reproduce. Sightings: Seven old trees, apparently of natural occurrence reported at Peter Perry property on Patuxent River (Underwood p.c., 3/13/2002). The following are plantings: Chase Creek watershed (Berry property; shore and dam of pond, also tidal marsh). Saltworks Creek (five trees at head of small cove on upper side of creek). Lake Waterford (these trees were heavily damaged by fishermen, and may no longer exist). Large trees at Holly Beach Farm are on upland soils, and appear to have been planted. 200 small trees planted at Ruckers Pond spring 2002. 65. Tsuga canadensis (L.) Carr. 1855. Shr.392, B&B.12 (Abies canadensis Michx. 1803) (Pinus canadensis L. 1753) (Eastern Hemlock, Canadian Hemlock) Large native tree.
66. Typha angustifolia L. 1753. Shr.394, B&B.42 (Narrow-leaved Cattail) Tall native perennial herb. Leaves 4-12 mm wide. Spike divided. Habitat: Typically forming extensive stands in tidal marshes; occasionally in fresh marshes. Frequency: "Throughout the Coastal Zone" (Shreve et al 1910). A "weed" (Jaques 1959). Records: No locale, 6/8/1880, John Donnell Smith (US) (Stieber 1967). Vicinity Glen Burnie/Marley (Plitt 7/1/1899). Manresa, in a swamp at the edge of the Severn 8/8/1966, 9/9/1966, Stieber 16 (LCU) (Stieber 1967). Rt. 3, S. of Rt. 424, in a low pond-like area 7/1/1966, Stieber 17 (LCU) (Stieber 1967). Yantz Cove, Severn River 7/30/1971 (Sipple 1993). "Throughout CBC: abundant in virtually pure stands in quiet, shallow, brackish marshes" Higman 211, 533 (CBC) (Higman 1977). 34 county brackish-marsh stations mapped by Sipple 1978. Brewer Pond 4/16/83 (Sipple 1993). Back Creek watershed (Williams 1989). Hancock's Resolution (Envirens 1991). Beverly-Triton Beach, Downs Park, Governors Bridge gravel pits, Kinder Park, Rieves Pond, Sullivan Cove (Longbottom 1991, 1993). Jug Bay Wetlands Sanctuary (Mason et al 1991). Sightings: Cypress Creek Bog (Longbottom, pc 1991). Fork Creek (on Magothy)(Longbottom, pc 1991). Herbaria: CBC. US & LCU (Stieber 1971). 67. Typha domingensis Pers. B&B.42 (Southern Cattail, Cattail of Santo Domingo) Similar to T. angustifolia. Taller (2.5-4 m.); more leaves (10 or more); pistillate spikes lighter brown, reach above leaves; leaves flat, not convex on back. Habitat: "Fresh or brackish marshes of the Eastern Shore" (Brown & Brown 1984). Frequency: "A recent addition to our flora; still rare" (Brown & Brown 1984). Heritage Rating: 1988: C (State declining). 1991: Watchlist. Records: Fort Smallwood, in a lagoon marsh, occasional with T. angustifolia 10/31/1950, Neil Hotchkiss & F. M. Uhler (US) (Stieber 1967). Herbaria: US (Stieber 1971). 68. Typha latifolia L. 1753. Shr.394, B&B.42 (Broad-leaved Cattail, Common Cattail) Native perennial herb. Spike continuous. Leaves flat, 6-23 mm wide. Habitat: Freshwater wetlands, ditches, and pond margins. Frequency: "Throughout the state" (Shreve et al 1910). A "weed" (Jaques 1959). Records: Vicinity Glen Burnie/Marley (Plitt 7/1/1899). Rt. 3, S. of Rt. 424, in a low pond-like area" 7/1/1966, 8/6/1966, Stieber 18 (LCU) (Stieber 1967). "Throughout CBC: infrequent to abundant in fresh or nearly fresh marshes, ditches, etc. & at upland margins of brackish marshes" Higman 90 (CBC) (Higman 1977). Six county fresh-marsh stations mapped by Sipple 1978. Round Bay Bog; Angels Bog (Sipple & Klockner 1984). Sawmill Pond 8/11/1989; Kinder Park pond 6/10/1992 (Sipple 1993). Beachwood Park, Kinder Park, Rieves Pond, "W" Section of Fort Meade (Longbottom 1991, 1993). Jug Bay Wetlands Sanctuary (Mason et al 1991). Sightings: Mill Creek above Rt. 50. Brewer Pond (Longbottom, pc 1991). Herbaria: CBC. US & LCU (Stieber 1971). 19. Sparganiaceae (Bur-reed Family) 69. Sparganium americanum Nuttall 1818. B&B.44 (Sparganium simplex var. nutallii Engelm. ex A. Gray 1867) (Eastern Bur-reed, American Bur-reed, Nuttall's Bur-reed) Native perennial herb 1-2.5 ft. tall. Stem seldom branching. Fruiting heads 18-26 mm. in diam.
70. Sparganium androcladum (Engelm.) Morong. 1888. Shr.394, B&B.44 (Sparganium simplex androcladum Engelm. ex A. Gray 1867) (Sparganium americanum androcladum Fernald & Eames 1907) (Branching Bur-reed) Native perennial herb 1-3.5 ft. tall. Stem branching. Fruiting heads 2.5-3.5 cm. in diam. Nutlets (achenes) stalked, ellipsoid. Habitat: "In bogs or shallow water" (Britton 1901). Heritage Rating: 1988: C (State declining). 1991: Watchlist. Records: Severn Run (Severn Run Watershed Management Study 1978). Severn Run, & headwaters of Magothy 7/12/1986 (Sipple 1993). 71. Sparganium eurycarpum Engelm. ex A. Gray 1856. Shr.394, B&B.44 (Giant Bur-reed, Broad-fruited Bur-reed) Tall (2-5 ft.) native perennial herb. Stem branching. Fruiting heads 2-3.5 cm. in diameter. Nutlets (achenes) sessile, broad (obovoid). Habitat: "In marshes and along streams" (Britton 1901). "In marshes, swamps and along the margins of streams and ponds, growing in saturated soil or as an emersed aquatic." (Shreve et al 1910). Frequency: "Throughout the state; common" (Shreve et al 1910). Heritage Rating: 1988: C (State declining). 1991: Watchlist. Records: Hill's Bridge near Wayson's Corner 6/16/1907, Forrest Shreve 1548 (US) (Shreve et al 1910, Stieber 1967). "Ivy Neck: one large clump at small cutoff pond on Cheston Peninsula" Higman 944 (CBC) (Higman 1977). Herbaria: CBC. US (Stieber 1971). Order Najadales 20. Zosteraceae (Pondweed Family) 72. Potamogeton crispus L. 1753. Shr.395, B&B.48 (Curly Pondweed, Crimped Pondweed, Curly Muck-weed) Aquatic perennial herb naturalized from Europe. Leaves submerged with wavy margins. Habitat: "Flowing and stagnant waters" (Gray 1867). "In fresh, brackish or even salt water" Britton 1901). Frequency: "Coastal Zone" (Shreve et al 1910). Records: Severn River at Herald Harbor, on a shallow beach area 9/26/1926, G. M. & E. C. Leonard, (US) (Stieber 1967). Herbaria: US (Stieber 1971). 73. Potamogeton diversifolius Raf. 1808. Shr.395, B&B.48 (Potamogeton hybridus Michx. 1803) (Variable Pondweed, Rafinesque's Pondweed) Perennial aquatic herb. Leaves both submerged (linear), & floating (elliptic).
DBT. Potamogeton filiformis Pers. 1805. B&B: unlisted. (Potamogeton filiformis macounii Morong 1888) (Threadleaf Pondweed) Native perennial aquatic herb. Leaves all submerged, linear.
74. Potamogeton foliosus Raf. 1808. B&B.48 [Potamogeton foliosus niagarensis (Tuckerm.) Morong 1893] (Potamogeton niagarensis Tuckerm. 1849) (Potamogeton pauciflorus Pursh 1789) (Leafy Pondweed) Native perennial aquatic herb. Leaves all submerged.
DBT. Potamogeton gramineus B&B: unlisted. (Variable Pondweed)
75. Potamogeton nodosus Poir. B&B.50 (Potamogeton americanus Cham. & Schl. 1827) (Long-leaved Pondweed, Knotty Pondweed) Native perennial aquatic herb. Leaves both floating & submerged.
76. Potamogeton pectinatus L. 1753. Shr.395, B&B.47 (Sago Pondweed, Fennel-leaved Pondweed) Native perennial aquatic herb. Leaves all submerged. Habitat: Fresh, sometimes brackish water (0-8 ppt). "Ponds and fresh tidal streams" (Shreve et al 1910). Frequency: "Coastal Zone; frequent" (Shreve et al 1910). Records: Herald Harbor, to a depth of 4 ft. in beach water 7/3/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Mayo Beach, in shallow saline water, by Titus Ulke, 6/29/1947 (US) (Stieber 1967). Redhouse Cove (10/31/91 draft, Magothy River Vessel Management Plan, p.17). Herbaria: CBC (CBC 1993). US (Stieber 1971). 77. Potamogeton perfoliatus L. 1753. Shr.394, B&B.50 [Potamogeton perfoliatus var. bupleuroides (Fernald) Farw.] All American specimens of P. perfoliatus are var. bupleuroides. (Redhead Grass, Clasping-leaved Pondweed) Native perennial aquatic herb. Leaves: broad blades, all submerged. Habitat: Fresh to moderately brackish water (0-19 ppt). "In fresh, brackish, or salt water" (Britton & Brown 1913). "Ponds and streams" (Brown & Brown 1984). Frequency: "Common in the Coastal Zone, infrequent in the Midland" (Shreve et al 1910). Heritage Rating: 1988: B3 (State rare). 1991: Rare. Records: Herald Harbor, in beach water up to a depth of 4 ft. 7/3/1927, E. C. & G. M. Leonard (US) (Stieber 1967), Shadyside, washed up on the shore 6/11/1950, L. B. Smith (US) (Stieber 1967). Magothy River, 7.5 mi. NE of Annapolis 7/9/1950, H. G. Deignan (US) (Stieber 1967). "Infrequent in shallows of Rhode River" Higman 272, 1009 (CBC) (Higman 1977). Magothy Narrows - See Northeast Quarter Map 24, Distribution of Submerged Aquatic Vegetation in the Chesapeake Bay and Tributaries - 1985. Herbaria: CBC. US (Stieber 1967). US (As var. bupleuroides; Stieber 1971). 78. Potamogeton richardsonii (Ar. Bennett) Rydb. 1905. B&B.52 (Potamogeton perfoliatus richardsonii Ar. Bennett 1889) (Potamogeton perfoliatus L., var. lanceolatus Robbins) (Redhead Grass, Redhead Pondweed) Perennial native submerged aquatic herb. Habitat: "Quiet water" (Robinson & Fernald 1908). "Ponds and streams" (Brown & Brown 1984). Heritage Rating: 1988: B1/X (Regionally rare, not reported in Maryland since before 1950). 1991: Endangered Extirpated. Records: Collected at Fox Creek (either Old Place Creek, on the Severn, or Fox Creek, a tributary of Rhode River) in 1926 (A. Todd Davison, pc 1986). 79. Potamogeton spirillus Tuckerm. 1848. B&B.48 (Potamogeton dimorphous Raf. 1817) [Potamogeton spirillus curvifolius (Tuckerm.) Peck 1896] (Spiral Pondweed) Native aquatic perennial herb. Leaves both floating & submerged. Habitat: "In ponds and ditches" (Britton 1901). "Shallow smooth waters" (Brown & Brown 1984). Heritage Rating: 1988: B2 (Highly state rare). 1991: Highly Rare. County Occurrence: Listed for Anne Arundel County by Matthews 1987. Records: Very tentative: Sawmill Pond 8/11/89; either P. diversifolius or P. spirillis (Sipple 1993). 80. Ruppia maritima L. 1753. Shr.394, B&B.52 (Ruppia curvicarpa A. Nelson 1899) (Widgeon Grass, Ditch Grass, Tassel Pondweed, Maritime Ruppia) Native submerged marine herb.
81. Ruppia maritima L. var. longipes Hagstrom B&B.52 Records: At Cape Anne near Churchton 9/26/1948, L. B. Smith (US) (Stieber 1967). 82. Ruppia maritima L. var. obliqua (Schur) Aschers & Graebn. B&B.52
83. Zanichellia palustris L. 1753. B&B.52 (Zanichellia intermedia Torrey 1833) (Horned Pondweed) Native submerged aquatic herb. Habitat: Fresh or brackish ponds (0-20 ppt). Frequency: "Fresh or brackish waters on the Coastal Plain; infrequent" (Brown & Brown 1984). Records: "One station, a pond at Ivy Neck" (Stieber 1971). "Infrequent in shallows of Rhode River, at Sand Point, & in cutoff pond on Cheston Peninsula" Higman 1154, 1356 (CBC) (Higman 1977). Jug Bay Wetlands Sanctuary 6/1/1988 (Sipple 1993). Three Magothy River sites: Broad Creek, Forked Creek, & Old Man Creek (10/31/91 draft, Magothy River Vessel Management Plan, p.17). Herbaria: CBC. US (Stieber 1971). 21. Najadaceae (Naiad Family) 84. Najas gracillima (A. Br.) Magnus B&B.54 [Naias gracillima (A. Br.) Magnus 1870] [Naias gracillima (A. Br.) Morong Shr.395 Slender branching opposite-leaved submerged aquatic annual herb.
85. Najas guadalupensis (Spreng.) Magnus B&B.54 [Najas guadalupensis (Spreng.) Morong. 1893] (Najas microdon A. Br.) (Southern Naiad) Slender branching opposite-leaved submerged aquatic annual herb. Habitat: "In ponds and lakes" (Britton & Brown 1913). Frequency: "Infrequent; in the W-B area." (Brown & Brown 1984). Heritage Rating: 1988: C (State Declining). 1991: Watchlist. Records: Jug Bay Wetlands Sanctuary (Mason et al 1991). 86. Najas minor All. B&B: not listed. (Naiad) Introduced.
87. Alisma subcordatum Raf. 1808. B&B.55 (Alisma plantago-aquatica L.) Shr.395 [Alisma plantago-aquatica L. var. pauciflorum (Torr.) Farw.] [Alisma plantago var. parviflorum Torr. 1824] [Alisma plantago Bigel. 1814] (Common Water Plantain, Mud-plantain) Native perennial emergent aquatic herb. Habitat: "Shallow water and ditches" (Robinson & Fernald 1908). "In marshes and all open wet situations" (Shreve et al 1910). Records: Vicinity Elvaton/Waterford (Plitt 7/2/04). Patuxent Community Pond, erect in shallow water 6/14/1966, Stieber 20 (LCU) (Stieber 1967). "Ivy Neck: solitary at small cutoff pond on Cheston Peninsula" Higman 946 (CBC) (Higman 1977). Picture Spring Branch (Nevamar Pond; Ecological Analysts 1983). Jug Bay Wetlands Sanctuary (Mason et al 1991). Rieves Pond (Longbottom 1993). Herbaria: CBC. US & LCU (Stieber 1971). 88. Lophotocarpus calycinus (Engelm.) J. G. Smith 1894 B&B.58 (Sagittaria calycina Engelm. 1859) (Lophiocarpus calycinus Micheli 1881) The correct nomenclature for the Magothy plants is unclear. Gleason & Cronquist (1991) show (1) S. calycina (Mississippi Arrow-head), syn. L. calycina; (2) S. spatulata (Tidal Sagittaria), syn. L. spatulatus and L. spongiosa. Heritage (1988, 1991) shows L. calycinus as the syn. for S. calycina, the "Spongy Lophotocarpus". This common name is confusing. Robinson & Fernald (1908) state that the leaves of L. spongiosus are "thick, spongy phyllodia". Also, Gray (1867) states that S. calycina var. spongiosa has "a loose or spongy texture". However, Gleason & Cronquist state that S. calycina has "petioles very spongy". Sagittaria is a plastic genus; although Sipple (1993) appears in error (L. calycinus is not L. spongiosus) perhaps they have been "lumped" as environmental forms. Considering the habitat, the plants may be the tidal L. spongiosus. (Arrow-leaved Lophotocarpus, Large Lophotocarpus, Mississippi Arrowhead) Emergent aquatic herb; most leaves hastate or sagitate, not spatulate. Perennial (Robinson & Fernald 1908), (Brown & Brown 1984) or annual (Gleason & Cronquist 1991).
89. Sagittaria lancifolia L. var. media Micheli (Sagittaria falcata Pursh. 1814.) B&B.59 (Coastal Arrowhead, Scythe-fruited Sagittaria) Native perennial herb.
Gray property at Rock Cove. Saltmarsh by Cypress Creek Bog (As S. falcata, Longbottom 7/27/90, pc). 90. Sagittaria latifolia Willd. 1806. Shr.395, B&B.62 (Sagittaria variabilis Engelm., var. latifolia) (Broadleaf Arrowhead, Broad-leaved Arrowhead) Native perennial herb. Habitat: "In shallow water" (Britton 1901). "In swamps and open moist situations" (Shreve et al 1910). Frequency: "Common" (Brown & Brown 1984). Records: South R. at Rt. 50, on the muddy shore 6/11/1966, Stieber (LCU) (Stieber 1967). Manresa, commonly growing in the Severn R. 6/11/1966, Stieber 21 (LCU) (Stieber 1967). Five county fresh-marsh stations mapped by Sipple 1978. Severn Run 6/19/1982, 5/11/1986; Severn Run between Route 3 and delta 6/14/1987; Sawmill Pond 8/26/1989 (Sipple 1993). Nevamar Pond (Ecological Analysts 1983). Round Bay Bog (Sipple & Klockner 1984). Back Creek watershed (Williams 1989). Jug Bay Wetlands Sanctuary (Mason et al 1991). Sightings: Chase Creek watershed (Ruckers Pond). Mill Creek above Rt. 50. Truxtun Park. Swamp near 1924 Severn River bridge. Lower pond, Chartwell Golf Course, 7/16/1988. Lower Gumbottom/Plum Branch 10/15/1988. Herbaria: LCU (Stieber 1971). 91. Sagittaria latifolia Willd. forma diversifolia (Engelm.) Robinson B&B: not listed. (Sagittaria variabilis var. diversifolia Engelm. ex A. Gray 1867) (Sagittaria brevirosta Mack & Bush 1905) (Arrow-head) Native perennial herb.
92. Sagittaria latifolia Willd. var. pubescens (Muhl.) J. G. Smith 1894. B&B.62 [Sagittaria pubescens Muhl. 1813] (Sagittaria sagittaria pubescens Torr. 1826) [Sagittaria variabilis var. pubescens Engelm. ex A. Gray 1867] (Hairy Arrow-head) Native perennial emergent aquatic herb. Habitat: "In bogs and shallow water" (Britton & Brown 1913).. Frequency: "Throughout the state, growing with the type" (Shreve et al 1910). Records: "At Java Farm in Muddy Creek and in Fox Creek marsh" (Stieber 1971). "Java Farm: infrequent on north fork of Muddy Creek & in fresh part of Fox Creek marsh" Higman 1056 (CBC) (Higman 1977). Herbaria: CBC. US (Stieber 1971). 23. Hydrocharitaceae (Frog's-bit Family) 93. Anacharis canadensis (Michx.) Rich. (Anacharis canadensis Planchon) (Elodea canadensis Michx. 1803.) B&B.63 [Philotria canadensis (Michx.) Britton 1895] (Common Elodea, Canada Waterweed) Submerged aquatic native perennial herb.
94. Anacharis nuttallii Planch 1848) [Elodea nuttallii (Planch.) St. John] B&B.63 [Philotria nuttallii (Planch.) Rydb. 1908] (Nuttall's Waterweed, Western Waterweed) Native aquatic herb. Habitat: "Fresh to slightly brackish water" (Stieber 1971). Records: Patuxent R. at Rt. 50, floating in a marsh 10/23/1921, E. C. Leonard & E. P. Killip (US) (Stieber 1967). Valentine Creek, abundant in water 1-5 ft. deep 8/19/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Herbaria: US (Stieber 1971). 95. Vallisneria americana Michx. B&B.63 (Vallisneria spiralis L. 1753 ) Shr.396 (Wild Celery, Water Celery, Tape-grass, Eel-grass) Submerged aquatic perennial herb with long ribbon-like leaves.
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