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26. Araceae (Arum Family)

336. Acorus calamus L. 1753. Shr.413, B&B.298

(Sweetflag, Sweet Flag)

Native emergent aquatic perennial herb. Leaves (2-6 ft.), somewhat like Typha; spadix somewhat like Orontium, but not terminal.



Habitat: "Margins of rivulets, swamps, etc." (Gray 1867). "In swamps and along streams" (Britton & Brown 1913). "Fresh water, swamps, or shallow water" (Brown & Brown 1984).

Records: Hills Bridge (Shreve #1546; see Shreve et al 1910); presumably collected 6/16/1907, as were #1548 & 1552. E. of Upper Marlboro, on the marshy shore of the Patuxent R. 4/25/1948, L. B. Smith (US) (Stieber 1967). "Abundant (pure stands) in Flat Creek tidal marsh on upper South River" (Higman 1977). Three county fresh-marsh stations mapped by Sipple 1978. Jug Bay Wetlands Sanctuary (Mason et al 1991).

Herbaria: Shreve's #1546 may be at MARY, as is #1552 (Dryopteris cristata). US (Stieber 1971).

337. Arisaema triphyllum (L.) Schott var. triphyllum

[Arisaema atrorubens (Aiton) Blume 1835] B&B.294

[Arisaema triphyllum (L.) Torr. 1843] Shr.413

(Arum triphyllum L. 1753)

(Jack-in-the-Pulpit, Indian Turnip)

Native perennial herb. Hooded spathe. Ht. 10-36". Leaves pale beneath. Spadix club-shaped.

Habitat: "Rich woods" (Gray 1867). "In moist woods and thickets" (Britton 1901). "In moist forests" (Shreve et al 1910).

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

Records: Glen Burnie 6/2/1921, Frederick V. Coville (US) (Steiber 1967). Manresa, near rotting logs with stands of Podophyllum in a moist woods 5/5/1966, Stieber 122 (LCU) (Stieber 1967). Throughout CBC, infrequent to moderately abundant in moist hardwood forests, Higman 72, 600 (CBC) (Higman 1977). College Creek Woods (Williams 1986a). Back Creek watershed (Williams 1989). Jug Bay Wetlands Sanctuary (Mason et al 1991). Quiet Waters Park (Longbottom 1991).

Sightings: Chase Creek watershed (Rucker property). Martins Pond ravine. Lower Plum/Gumbottom Branch 10/15/1988. Poplar woods, Kass tract, Bay Ridge 10/6/90.

Herbaria: CBC. US (Stieber 1971).

338. Arisaema triphyllum (L.) Schott var. pusillum Peck 1898.

[Arisaema triphyllum (L.) Schott] B&B.294

[Arisaema pussilum (Peck) Nash ex Britton 1901]

(Small Jack-in-the-Pulpit, Peck's Jack-in-the-Pulpit)

Native perennial herb. Hooded spathe. Ht. 8-15". Leaves green both sides.



Habitat: "In open sunny bogs" (Britton 1901). "Moist shaded areas" (Stieber 1971).

Records: Throughout CBC, infrequent in moist hardwood forests, Higman 544 (CBC) (Higman 1977).

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

339. Orontium aquaticum L. 1753. Shr.413, B&B.298

(Golden-club)

Native emergent aquatic perennial herb. Leaves elliptic, entire. Spadix terminal, golden in flower.



Habitat: "In swamps and ponds" (Britton 1901). "Most abundant in fresh marshes along the upper waters of tidal streams; infrequent in swamps" (Shreve et al 1910). Pond margins.

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

Records: (No locale) 5/29/1878, John Donnell Smith (US) (Stieber 1967). Furnace Branch (Plitt 4/22/1899). Curtis Bay (A. A. Co.? Plitt 5/11/1899). Head of Lake Waterford (Plitt 7/2/1904, 4/29/1905; "more than an acre" of this plant). Hills Bridge, Shreve 1544 (Shreve et al 1910); presumably collected 6/16/1907, as were #1548 & #1552. E. of Upper Marlboro, on the marshy shore of the Patuxent R. 4/25/1948, L. B. Smith (US) (Stieber 1967). Severn Run, between Rt. 3 & delta 6/14/1987 (Sipple 1993). Cove of Lake Waterford 8/25/1989 (Sipple 1993; 1999, p.351). Jug Bay Wetlands Sanctuary: (Mason et al 1991); also 5/1/1992 (Sipple 1993).

Sightings: Shore of Severn River, near springhole east of Sewell Spring Branch, several plants 4/13/1991. Behind barn, Anne Arundel Community College Woods (Longbottom pc 1991).

Herbaria: Shreve's #1544 may be at MARY, as is #1552 (Dryopteris cristata). US (Stieber 1971).

340. Peltandra virginica (L.) Kunth 1841. Shr.413, B&B.296

(Arum virginicum L. 1753)

(Peltandra undulata Raf. 1819

(Arrow-arum, Tuckahoe)

Native emergent aquatic perennial herb. Leaves hastate to saggitate.



Habitat: "In swamps or shallow water" (Britton 1901). "In fresh marshes and about the edges of ponds" (Shreve et al 1910). Shallow fresh or brackish water.

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

Records: Manresa, in a swamp of the Severn 9/9/1966, Stieber 123 (LCU) (Stieber 1967). Infrequent in fresh part of tidal marsh at head of South River (Higman 1977). Eighteen county brackish-marsh stations mapped by Sipple 1978. Severn Run 5/8/1982, 5/11/1986, 6/14/1987, 6/14/1992 (Sipple 1993). Cypress Creek Savanna, Round Bay Bog (Sipple & Klockner 1984; extant 9/15/1990). Shore of College Creek Woods (Williams 1986a). Back Creek watershed (Williams 1989). Beachwood Park (Longbottom 1991). Jug Bay Wetlands Sanctuary by Gene Cooley

(Longbottom 1991).



Sightings: Tidal shore of Chase Creek 1947. Heads of Martins Pond, Luce Creek, Saltworks Creek. Sackett/Calvin Gray property at Rock Cove.

Herbaria: CBC (CBC 1993). LCU (Stieber 1971).

341. Symplocarpus foetidus (L.) Nuttall 1818. B&B.296

(Dracontium foetidum L. 1753)

[Spathyema foetida (L.) Raf. 1808] Shr.413

(Skunk Cabbage)

Native perennial herb. Leaves broad, 1-3 ft. long, in large crowns.



Habitat: "In moist forests and open wet situations" (Shreve et al 1910). "In swamps and wet soil" (Britton 1901). Wet floodplains and seeps.

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

Records: Near Brooklyn (Plitt 3/11/1899, 2/15/1900). Stony Run (Plitt 3/31/1899). Two county wooded swamp stations mapped by Sipple 1977. Picture Spring Branch (Nevamar Pond; Ecological Analysts 1983). Back Creek watershed (Williams 1989). Round Bay Bog 2/1/1991, Longbottom 1406 (AACC). Lake Waterford Park, Governors Bridge gravel pits (Longbottom 1991). Jug Bay Wetlands Sanctuary (Mason et al 1991). Chartwell Branch at Severn River 3/26/1991 (Sipple 1993).

Sightings: Severn Run (floodplain below Lake Marion). Chase Creek watershed (Rucker property). Little Magothy watershed (Cat Branch along Cape St. Claire Road). Whitehall Creek watershed (floodplains along Rt. 50). Back Creek watershed (SPCA prop.). Sewell Spring Branch lowlands. Jabez Branch lowlands. Indian Creek Branch lowlands. Hopkins Creek bottom. Bear Branch near Pointfield Landing 5/16/1992.

Herbaria: AACC.

27. Lemnaceae (Duckweed Family)

342. Lemna minor L. 1753. Shr.413, B&B.299

(Common Duckweed, Lesser Duckweed)

Very small native floating aquatic herb. Single root.



Habitat: "In ponds, lakes, and stagnant waters" (Britton 1901). "In ponds and slow streams" (Shreve et al 1910).

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

Records: Patuxent Community Pond, floating in a pond, common 6/14/1966, Stieber 124 (LCU) (Stieber 1967). Ivy Neck, abundant on small cut-off pond below Sand Point on Cheston Peninsula, Higman 1225 (CBC) (Higman 1977). Two county fresh-marsh stations mapped by Sipple 1978. Nevamar Pond (Ecological Analysts 1983). Governors Bridge gravel pits (Longbottom 1991).

Sightings: Chase Creek watershed (Ruckers Pond). Jonas Green pond.

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

343. Spirodela polyrhiza (L.) Schleiden 1839. Shr.413, B&B.298

(Lemna polyrhiza L. 1753)

(Greater Duckweed, Big Duckweed, Water-flaxweed)

Very small native floating aquatic herb. Two or more roots.

Habitat: "In rivers, ponds, pools and shallow lakes" (Britton & Brown 1913. "In ponds and quiet waters" (Shreve et al 1910).

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

Records: "In a pond at Ivy Neck" (Stieber 1971). Ivy Neck, abundant on small cut-off pond below Sand Point with Lemna minor, Higman 1226 (CBC) (Higman 1977). Three stations at Severn Run (Severn Run Watershed Management Study 1978). Governors Bridge gravel pits (Longbottom 1991).

Sightings: Arden Pond.

Herbaria: CBC. US (Stieber 1971).
ADD: Wolffia sp.

Records: Cattail Creek Pond 6/9/1991 (Sipple 1993).

344. Wolffia columbiana Karsten B&B.299

(Columbian Watermeal)

Extremely small (0.7-1.5 mm.) floating aquatic herb. No root, nearly

globular.

Habitat: "In stagnant ponds, pools, and shallow lakes" (Britton 1901).

Frequency: Reported from the Eastern Shore and Delaware.

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

Records: Governors Bridge gravel pits (Longbottom 1991).
ADD: Wolffia brasiliensis Weddell

(Wolffia papulifera C. H. Thompson 1898) B&B.299

[Bruniera punctata (Griseb.) Nieuwl.]

(Wolffia punctata Griseb.)

(Brazilian Watermeal)

The lumping of these three species is comparatively recent. Older manuals hold W. punctata to be separate, being convex, but without a conical raised center. W. papulifera is an extremely small (1 mm.) floating aquatic herb; no roots, nearly globular, upper surface dotted, with a conical raised center.



Habitat: Stagnant water of ponds.

Frequency: W. papulifera reported from Worcester County by Hirst and Cavileer 1971 (Brown & Brown 1984).

Sightings: Rucker's Pond 7/23/2000; W. papulifera very plentiful in stagnant water; length of small chains of plants gave individual diameters of 1 mm.; slight conical contour and dotted surface visible under 10x lens with oblique lighting.

345. Wolffiella floridana (J. D. Smith) Thompson 1897 B&B.299

(Wolffia floridana J. D. Smith 1895)

(Wolffia gladiata var. floridana J. D. Smith 1880)

J. D. Smith refers to John Donnell Smith (see Robinson & Fernald 1908, p.30), who collected

many plant species in Anne Arundel County.

(Wolffiella)

Small (4-14 mm.) floating aquatic herb. No root; flat, curved. Plants often tangled in small mats.



Habitat: "Ponds, roadside ditches, streams, swamps and marshes" (Radford et al 1968). "Stagnant or quiet water" (Brown & Brown 1984).

Frequency: "Rare" (Brown & Brown 1984).

Heritage Rating: 1988: B2/X (Highly State Rare, not seen since before 1950. 1991: Endangered Extirpated.

Records: Governors Bridge gravel pits (Longbottom 1991).

28. Xyridaceae (Yellow-eyed Grass Family)

ADD: Xyris sp.

(Yellow-eyed Grass)

Native rush-like herb. Scape bearing a cone-like flower head. Five or six species in Md.



Records: Eagle Hill Bog; Angels Bog; South Grays Bog (Sipple & Klockner 1984). Governors Bridge gravel pits (Longbottom 1991). Angels Bog 6/10/92 (Sipple 1993).

Sightings: Forked Creek (Blue Lake). Cattail Creek (margin of pond above Rt. 2). Dam, lower pond, Chartwell Golf Course 7/16/88.

346. Xyris caroliniana Walt. 1788. Shr.414, B&B.301

(Xyris jupacai Michx. 1803)

(Carolina Yellow-eyed Grass)

Native perennial rush-like herb.

Habitat: "In marshes, swamps and open wet situations" (Shreve et al 1910). Wet sandy soil about acidic ponds. "In swamps and bogs" (Britton 1901).

Frequency: "Coastal and Midland Zones; frequent" (Shreve et al 1910).

Records: Glen Burnie 9/1/1897, T. H. Knowlton (US) (Stieber 1967). Saw Mill Pond (Wagner's Pond) Glen Burnie (Plitt 7/19/1899, 8/5/1899, 9/6/1899). Bog at Glenburnie (M. A. Chrysler, in Shreve et al 1910; P.185). 2 mi. NW of Gibson I., in a sedge bog 9/26/1950, N. Hotchkiss (US) (Stieber 1967). Near Mt. Carmel in a fresh pond 9/1/1960, N. Hotchkiss & E. C. Leonard (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

29. Eriocaulaceae (Pipewort Family)

ADD: Eriocaulon sp.

(Pipewort)

Native erect perennial aquatic herbs. Tufted, almost grass-like, with an angled scape bearing a globe-like flower head. Four species in Md.



Records: Saw Mill Pond (Wagner's Pond) Glen Burnie (Plitt 8/5/1899). Angels Bog (Sipple & Klockner 1984).

347. Eriocaulon compressum Lam. B&B.303

(Flattened Pipewort)

Native perennial emergent aquatic herb. Scape 10-12 angled.

long-tapering leaf tips.

Habitat: "In still shallow water" (Britton 1901). Pine barren swamps.

Frequency: Unknown in Md. to Shreve et al 1910 - see pp. 86, 87.

Heritage Rating: 1988: B3 (State Rare). 1991: Rare Uncertain.

Records: Saw Mill Pond (Wagner's Pond) Glen Burnie (Plitt 8/5/1899).

348. Eriocaulon decangulare L. Shr.414, B&B.303

(Ten-angled Pipewort)

Native perennial emergent aquatic herb. Scape 10-14 angled. Obtuse leaf tips.



Habitat: Wet acid soils. "In swamps" (Britton 1901). "Fresh marshes and bogs" (Shreve et al 1910).

Frequency: "Confined to the Coastal Zone; infrequent" (Shreve et al 1910).

Heritage Rating: 1988: B3 (State Rare). 1991: Rare.

Records: North county (Plitt 7/19/99). Glenburnie bog (C. E. Waters 1905). Bog at Glenburnie (M. A. Chrysler in Shreve et al 1910; p.185).

349. Eriocaulon septangulare With. 1776. Shr.414, B&B.305

(Eriocaulon articulatum Morong 1891)

(Nasmythia articulata Huds. 1778)

(Seven-angled Pipewort, Duck-grass, White-buttons)

Native perennial emergent aquatic herb. Scape 4-7 angled.



Habitat: "In still water or on shores" (Britton 1901). "Shallow ponds" (Stieber 1971).

Frequency: "Common in the Coastal Zone, infrequent in the Midland" (Shreve et al 1910). Now extirpated.

Heritage Rating: 1988: B2 (Highly state rare). 1991: Endangered Extirpated.

Records: 2 mi. NW of Gibson I., in a fresh pond 9/26/1950, Neil Hotchkiss (US) (Stieber 1967). Near Mt. Carmel in a fresh pond 9/1/1960, N. Hotchkiss & E. C. Leonard (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

30. Commelinaceae (Spiderwort Family)
ADD: Aneilema keisak Hasskarl. B&B: not listed

Decumbent herb naturalized from eastern Asia.



Habitat: Fresh tidal marshes and streambanks.

Frequency: “Va. To Ga.” (Gleason & Cronquist 1963).

Sightings: Rucker’s Pond (Chase Creek watershed) July 2002; abundant at shady shoreline, reaching into shallow water (Identified by Sipple).

350. Commelina communis L. 1753. B&B.305

(Commelina willdenovii Kunth 1843)

(Common Dayflower, Asiatic Dayflower)

Common annual herb naturalized from Asia. Leaves lanceolate. Two larger petals pale blue, smaller white.

Habitat: "A frequent weed of dooryards and gardens" (Robinson & Fernald 1908). "Waste places" (Britton 1901). "Moist shaded thickets and woods..." (Fogg 1956).

Frequency: "A frequent garden weed" (Fogg 1956).

Records: Wayson's Corner, shaded dense stand in a moist ditch 6/5/1966, Stieber 125 (LCU) (Stieber 1967). Back Creek watershed (Williams 1989). Beachwood Park (Longbottom 1991). Hancock's Resolution (Envirens 1991). Jug Bay Wetland Sanctuary (Mason, Longbottom, Swarth 1991).

Herbaria: LCU (Stieber 1971).

351. Commelina communis L. var. ludens (Miquel) C. B. Clarke B&B.305

(Dayflower)

Herb. Leaves lanceolate. Larger petals deep violet-blue.



Habitat: "Same habitats" (As C. communis) (Brown & Brown 1984).

Frequency: "A common weed on the Coastal Plain" (Brown & Brown 1984).

Records: Java Farm, infrequent on Old Muddy Creek Road, probably infrequent on roadsides throughout CBC, Higman 352 (CBC) (Higman 1977). "Infrequent at Java Farm" (Stieber 1971).

Sightings: Chase Creek watershed (Rucker property).

Herbaria: CBC. US (Stieber 1971).

352. Commelina erecta L. 1753 B&B.307

(Slender Dayflower)

Erect perennial herb. Leaves linear-lanceolate. Upper two petals blue, lower white.



Habitat: "In moist soil" (Britton 1901). "Dry sandy woods and on rock outcrops" (Grimm 1968). "Pine woods on the Coastal Plain" (Brown & Brown 1984).

Frequency: "Rare" (Brown & Brown 1984).

Heritage Rating: 1988: C (State declining). 1991: Watchlist. 1994: S3 (Watchlist).

Sightings: Back Creek watershed (SPCA property) D. H. Williams, pc Sept. 1988.

353. Commelina virginica L. 1762 B&B.305

(Virginia Dayflower)

Perennial herb. Leaves lanceolate to linear-lanceolate. Petals all blue.



Habitat: "Damp rich woods and banks" (Robinson & Fernald 1908). "In moist soil" (Britton & Brown 1913). "Moist woods and thickets" (Grimm 1968).

Heritage Rating: 1988: C: State declining. 1991: Watchlist. 1994: S3 (Watchlist).

Records: Jug Bay Wetlands Sanctuary 8/4/1988 (Sipple 1993). Listed (1990) by Jug Bay Wetlands Sanctuary as occurring on property. Jug Bay (Mason et al 1991).

Sightings: At far end of woods road, near pawpaws, Jug Bay Wetlands

Sanctuary (David H. Williams, pc 2/7/89).


354. Tradescantia virginiana L. 1753 Shr.414, B&B.307

(Spiderwort, Spiderlily) Perennial herb.



Habitat: "In rich soil, mostly in woods and thickets" (Britton 1901). Often an escape from cultivation. "In moist waste grounds" (Shreve et al 1910).

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

Records: Beachwood Park (Longbottom 1991). Hancock's Resolution (Envirens 1991).

31. Pontederiaceae (Pickerelweed Family)

355. Heteranthera dubia (Jacq.) MacM. 1892. Shr.414, B&B.310

[Zosterella dubia (Jacq.) Small.]

(Commelina dubia Jacq. 1768)

(Water Stargrass)

Native freshwater herb; leaves linear, floating; flowers yellow.



Habitat: "In still water" (Britton 1901). Shallow freshwater, occasionally on mud.

Records: Lerch Creek (tributary of West River) - See Northeast Quarter Map 35, Distribution of Submerged Aquatic Vegetation in the Chesapeake Bay and Tributaries - 1985.

356. Heteranthera reniformis Ruiz & Pavon 1798. Shr.414, B&B.309

(Leptanthus reniformis Michx. 1803)

(Roundleaf Mud Plantain)

Native perennial herb. Leaves kidney-shaped, flowers white.

Habitat: "In mud or shallow water" (Britton 1901). "In shallow water about the edges of ponds" (Shreve et al 1910).

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

Records: "Muddy bank of a pond at Ivy Neck" (Stieber 1971). Ivy Neck, solitary in mud near hog pond at head of Cheston Creek drainage, Higman 874 (CBC) (Higman 1977). Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: Head of Blackwalnut Creek (Williams, pc 2/7/1989).

Herbaria: CBC. US (Stieber 1971).

357. Pontederia cordata L. 1753. Shr.414, B&B.309

(Common Pickerelweed)

Native perennial emergent aquatic. Lanceolate leaves, blue flowers.



Habitat: "Borders of ponds and streams" (Britton 1901). "In marshes and swamps and about the edges of ponds" (Shreve et al 1910).

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

Records: Between Glen Burnie & Marley (Plitt 7/1/1899). Six county fresh-marsh stations mapped by Sipple 1978. Kinder Park pond 7/23/1989 (Sipple 1993). Main Creek at Maywood Ave. 9/17/90, Longbottom 1199 (AACC). Marshy meadow at NW side Marley Creek between Rts. 648 & 10, 7/21/90, Longbottom 891 (AACC). Jug Bay Wetlands Sanctuary (Mason et al 1991).

Sightings: County-owned pond near Woodwardville.

Herbaria: AACC.

32. Juncaceae (Rush Family)
358. Juncus acuminatus Michx. 1803. Shr.415, B&B.318

(Tapertip Rush, Sharp-fruited Rush)

Native herb. Stem knotty-leaved.

Habitat: "In open wet grounds" (Shreve et al 1910). "Damp soil, edge of ponds" (Stieber 1971).

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

Records: Severn River, about 0.5 mi. from the head in moist soil 5/27/1953, E. P. Killip (US) (Stieber 1967). Ivy Neck, solitary on dry bank of hog pond at head of Cheston Creek drainage, Higman 997 (CBC) (Higman 1977). Kinder Park pond 7/23/1989 (Sipple 1993). Cattail Creek pond 7/12/1990 (Sipple 1993). Jacobsville Park (Longbottom 1991). Angels Bog 8/7/1992 (Sipple 1993).

Herbaria: CBC. US (Stieber 1971).

359. Juncus bufonius L. 1753. Shr.415, B&B.312

(Toad Rush)

Native annual herb. stems grassy-leaved, 3-9 in. high.



Habitat: "Low grounds by roadsides" (Gray 1867). "Frequenting dried-up pools, borders of streams and roadsides in clayey soil" (Britton & Brown 1913). "Moist open situations" (Shreve et al 1910).

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

Records: "Infrequent at Ivy Neck" (Stieber 1971). Ivy Neck, abundant in fresh marsh at head of Cheston Creek (co-dominant with Eleocharis palustris); infrequent at forest margin of cornfield; Higman 739, 838 (CBC) (Higman 1977).

Herbaria: CBC. US (Stieber 1971).

360. Juncus caesariensis Coville 1894. B&B.316

(New Jersey Rush) Native perennial herb.

Habitat: "Sandy swamps of southern New Jersey" (Britton 1901). Wet peaty places. Pine barren bogs. Sphagnum swamps, springs, ponds.

Heritage Rating: 1988: A3/X (Nationally rare, close to extinction throughout range, not reported in Maryland since before 1950). 1991: Endangered Extirpated.

Records: Glen Burnie Bog 8/19/1905 Chrysler 200 (GH, MARY, NA) (See Reveal & Broome 1981; also Broome et al 1979; A. V. P. Smith 1938). For map of Md., Va. & N. J. stations, see Compendium of Natural Features, Vol. I, pp. D24-25.

Herbaria: GH, MARY, NA.

361. Juncus canadensis J. Gay 1825. Shr.415, B&B.316

(Canada Rush)

Native perennial herb. Knotty-leaved, like J. acuminatus, but late flowering.



Habitat: "In open wet situations" (Shreve et al 1910). Marshy places, bogs.

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

Records: Severna, in a beach swamp 8/16/1927, E. C. & G. M. Leonard (US), (Stieber 1967). "Beach along the Valentine R." 8/19/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Java Farm, solitary on bank of Muddy Creek north fork, above old entrance road, Higman 792 (CBC) (Higman 1977). Cypress Creek Savanna (Sipple & Klockner 1984), & 6/10/1992 (Sipple 1993). Round Bay Bog, Eagle Hill Bog, Angels Bog (Sipple & Klockner 1984); 6/10/1992 & 8/7/1992 (Sipple 1993).

Herbaria: CBC. US (Stieber 1971).

362. Juncus dichotomus Ell. Shr.415, B&B.314

(Forked Rush) Herb; stems grassy-leaved; height 1.5 to 2 ft.

Habitat: "Low sandy grounds" (Gray 1867). "In dry soil" (Britton 1901). "Peat and damp sand" (Brown & Brown 1984).

Frequency: "On Coastal Plain, common" (Brown & Brown 1984).

Records: Java Farm, solitary in Hog Island tidal marsh (Panicum virgatum community); Ivy Neck, solitary at marshy north end of old field on Scaffold Peninsula; Higman 304, 749 (CBC) (Higman 1977). BG&E transmission line r/w off Marley Station Boulevard by Sipple 6/3/2002 (See The Maryland Naturalist Summer 2001).

Herbaria: CBC.

363. Juncus diffusissimus Buckley 1862. B&B.321

(Diffuse Rush) Native herb.

Habitat: "Wet soils" (Brown & Brown 1984).

County Occurrence: Reported from A. A. Co. by Stieber, according to Brown & Brown 1984.

Records: Jacobsville Park (Longbottom 1991).

364. Juncus effusus L. 1753. Shr.415, B&B.312

(Common Rush, Soft Rush, Bog Rush)

Native perennial herb. Unleaved scape.



Habitat: "Marshy grounds" (Gray 1867). "In swamps and moist places" (Britton & Brown 1913). "In wet open situations, ditches and ponds" (Shreve et al 1910). Fresh marshes.

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

Records: Eight county fresh-marsh stations mapped by Sipple 1978. Picture Spring Branch (Nevamar Pond; Ecological Analysts 1983). Cypress Creek Savanna, Round Bay Bog (Sipple & Klockner 1984). Governors Bridge gravel pits (Longbottom 1991). Severn Run behind Millersville P. O. 12/21/1991 (Sipple 1993). Jug Bay Wetlands Sanctuary 5/1/1992 (Sipple 1993). Near Kinder Park pond 6/10/1992

(Sipple 1993).


365. Juncus effusus L. var. compactus Lejeune & Courtois. B&B: not listed.

This is a northern form, occurring s. to N. J., W. Va. & Mich. (Gleason & Cronquist 1963).

(Rush)

Habitat: "Swales, wet thickets" (Stieber 1971).

Records: Manresa, growing in water along the Severn R. 6/1/1966, Stieber 127 (LCU) (Stieber 1967).

Herbaria: LCU (Stieber 1971).

366. Juncus effusus L. var. solutus Fernald & Wieg. B&B.312

(Rush)

Records: Magothy R. May 1904, Charles C. Plitt (US) (Stieber 1967). Road to Nabb's Creek 7/9/1904, Charles C. Plitt (US) (Stieber 1967). Rt. 3, S. of Rt. 424, wet sandy low area with Typha & Cyperus 7/1/1966, Stieber 126 (LCU) (Stieber 1967). "Infrequent in marshes at Java Farm and Ivy Neck" (Stieber 1971). Java Farm, infrequent at marshy west end of Phalaris meadow; Ivy Neck, infrequent at marshy north end of old field at Scaffold Peninsula; Higman 748, 880 (CBC) (Higman 1977).

Herbaria: CBC. LCU (Stieber 1967). US (Stieber 1971).

367. Juncus gerardii Loisel. 1809. Shr.415, B&B.314

(Black Grass, Black Rush)

Grassy-leaved native perennial herb.



Habitat: "Salt marshes" Gray 1867). "In salt and brackish marshes" (Shreve et al 1910).

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

Records: Sherwood Forest, in a marsh of the Severn 8/16/1930, G. M. & E. C. Leonard (US) (Stieber 1967). Rt. 3, S. of Rt. 424, wet area with Typha & Cyperus 7/1/1966, Stieber 128 (LCU) (Stieber 1967).

Herbaria: US & LCU (Stieber 1971).

368. Juncus marginatus Rostkovius 1801. Shr.415, B&B.316

(Shore Rush, Grass-leaved Rush) Grassy-leaved native herb.

Habitat: "Moist sandy places" (Gray 1867). "In moist open situations" (Shreve et al 1910). "Grassy places" (Britton 1901).

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

Records: Severna, beach swamp 8/16/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Mimosa Cove near Deale, in a sandy field 7/10/1949, L. B. Smith (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

369. Juncus pelocarpus E. Meyer 1823. Shr.415, B&B.321

(Bog Rush, Brown-fruited Rush)

Native herb. Stems knotty-leaved.



Habitat: "Sandy, wet or swampy places" (Gray 1867). "Damp shores, pools, wet sands" (Stieber 1971).

Heritage Rating: 1988: B3 (State rare). 1991: Endangered Extirpated.

Natural Range: "Newfoundland to New Jersey, Ontario and Minnesota" (Britton & Brown 1913).



Records: Waterford 8/31/1904, C. C. Plitt (US) (Stieber 1967). Glen Burnie: Shreve #2063 (Shreve et al 1910). 2 mi. NW of Gibson I. in muck-bottomed shallow pools 9/26/1950, Neil Hotchkiss (US) (Stieber 1967), also 11/12/1950, Hotchkiss & F. M. Uhler (US) (Stieber 1967). S. arm of Cypress Creek 9/8/1951, N. Hotchkiss (US) (Stieber 1967). Near Mt. Carmel, in a fresh pond 8/18/1960, N. Hotchkiss (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

370. Juncus pelocarpus E. Meyer var. crassicaudex Engelm. B&B: not listed.

(Juncus abortivus Chapm.)

(Pine-barrens Rush)



Range: S.e. Va. to Fla. (Gleason & Cronquist 1963).

Records: (1) North Grays Bog: "Dominates the herbaceous layer [1977-1980]... no evidence of the floating mats of pine-barrens rush [3/13/98]" (Sipple 1999, p.377).

(2) Cypress Creek Savanna (Sipple & Klockner 1984). "Some, scattered" 8/13/1998 (Sipple 1999, p.369).

(3) Round Bay Bog (Sipple & Klockner 1984). 7/17/1998 (Sipple 1999, p.381).

(4) Eagle Hill Bog (Sipple & Klockner 1984).

(5) Angels Bog (Sipple & Klockner 1984). "Infrequent" 8/4/1995 (Sipple 1999, p.373).

(6) South Grays Bog (Sipple & Klockner 1984).

(7) Arden Bog 1998 (Sipple 1999, p.382).

371. Juncus roemerianus Scheele 1849. Shr.415, B&B.314

(Black Needle Rush, Roemer's Rush)

Native herb. Stout scape 2-3 ft. high.



Habitat: "Brackish marshes" (Gray 1867).

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

Records: One county brackish-marsh station (near Shadyside) mapped by Sipple 1978.

372. Juncus scirpoides Lam. 1789. Shr.415, B&B.318

(Needlepod Rush, Scirpus-like Rush)

Native herb, 1-3 ft. high.



Habitat: "In open dry situations" (Shreve et al 1910). "Damp sandy soil at border of pinelands and pools" (Stieber 1971).

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

Records: NE of Bowie, border of a field 7/4/1928, E. C. Leonard (US)

(Stieber 1967).



Herbaria: US (Stieber 1971).

373. Juncus secundus Beauv. 1813. Shr.415, B&B.314

(Juncus tenuis var. secundus Engelm.)

(Secund Rush)

Native herb, smaller than J. tenuis; leaf-sheath auricles different.

Habitat: "Sandy or sterile soil" (Robinson & Fernald 1908). "In dry soil" (Britton & Brown 1913). "In dry open situations" (Shreve et al 1910). "In open areas with dry, sterile soils" (Brown & Brown 1984).

Frequency: "Midland Zone; infrequent" (Shreve et al 1910). "Infrequent; on the Coastal Plain and Serpentine areas" (Brown & Brown 1984).

Records: Rt. 3, S. of Rt. 424 6/7/1966, Stieber 129 (LCU) (Stieber 1967). Hancock's Resolution (Envirens 1991).

Herbaria: LCU (Stieber 1967), US (Stieber 1971).

374. Juncus subcaudatus (Engelm.) Coville & Blake B&B.316

(Rush)

Habitat: "Swamps, bogs, and wet woods" (Brown & Brown 1984).

Frequency: "Chiefly coastal; rare" (Brown & Brown 1984).

Herbaria: LCU (Stieber 1971).

375. Juncus tenuis Willd. 1799. Shr.415, B&B.314

(Path Rush, Poverty Rush, Slender Rush)

Native herb. Very narrow grassy leaves. Wiry stems 9-18 in. high.



Habitat: "Low grounds, fields, and roadsides" (Gray 1867). "In dry or moist soil, especially on paths" (Britton & Brown 1913). "In moist and dry waste situations" (Shreve et al 1910). "A weed...grows in places where other plants 'cannot take it' as in paths and other much traversed places" (Jaques 1959).

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

Records: Road to Nabb's Creek 7/9/1904, C. C. Plitt (US) (Stieber 1967). Severna, a beach swamp 8/16/1927, E. C. & G. M. Leonard (US) (Stieber 1967). Patuxent Community Pond, in moist sandy soil 6/14/1966, Stieber 130 (LCU) (Stieber 1967). Java Farm & Ivy Neck, moderately abundant on various dry open sites, Higman 24, 173, 796 (CBC) (Higman 1977). Picture Spring Branch (Nevamar Pond; Ecological Analysts 1983). Jacobsville Park, Beachwood Park (Longbottom 1991).

Jug Bay Wetlands Sanctuary (Mason et al 1991).



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

376. Juncus tenuis forma anthelatus (Wieg.) F. J. Hermann B&B: Not listed.



Records: Java Farm, solitary in broken pavement at Fox Point, under Quercus prinus canopy, Higman 434 (CBC) (Higman 1977).

377. Luzula acuminata Raf. B&B.323

(Hairy Woodrush) Low native perennial herb.

Habitat: "Partly cleared woods, bluffs" (Stieber 1971). "Woods and open fields" (Brown & Brown 1984).

Frequency: "Rare" (Brown & Brown 1984).

Records: Head of the South R., in a partly cleared woods 6/7/1946, Neil Hotchkiss & F. M. Uhler (US) (Stieber 1967).

Herbaria: US (Stieber 1971).

378. Luzula bulbosa (Wood) Rydb. B&B.321

(Luzula campestris var. bulbosa A. Wood)

(Bulbous Woodrush) Perennial herb.



Habitat: "Woods, generally near streams" (Robinson & Fernald 1908). "Open woods" (Brown & Brown 1984).

Records: Back Creek watershed (Williams 1989).

379. Luzula echinata (Small) F. J. Hermann B&B.321

[Luzula campestris (L.) D.C. var. echinata (Small) Fernald & Wieg.]

(Sea-urchin-like Woodrush) Low native perennial herb.



Habitat: "Dry woodland and saline shores" (Brown & Brown 1984).

Records: "Infrequent in moist woods at Java Farm" (Stieber 1971). Java Farm, infrequent in mixed hardwood forest on south slope above Muddy Creek tidal channel, Higman 717, 1097 (CBC) (Higman 1977).

Herbaria: CBC. US (Stieber 1971).

380. Luzula multiflora



Habitat:

Frequency:

Records: Jug Bay Wetlands Sanctuary 5/1/1992 (Sipple 1993).


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