Part 7 - UNC Herbarium

POACEAE 888
considered as a species, perhaps of hybrid origin. [= F, G, K; = G. canadensis (Michaux) Trinius var. laxa (Scribner) A.S.
Hitchcock – RAB, HC; = G. ×laxa – C; < G. canadensis – GW]
Glyceria melicaria (Michaux) F.T. Hubbard, Northeastern Mannagrass. Mt (GA, NC, VA), Pd (NC): mountain swamp
forests and seepages; uncommon (GA Special Concern). June-August. Nova Scotia west to Québec, south to n. GA (Jones &
Coile 1988) and KY. [= RAB, C, F, G, GW, HC, K, W, Z; = Panicularia melicaria (Michaux) A.S. Hitchcock – S]
Glyceria nubigena W.A. Anderson, Smoky Mountain Mannagrass. Mt (NC): moderate to high elevation seepages in the
Great Smoky Mountains, sometimes in areas appearing dry (such as heath balds), nearly endemic to Great Smoky Mountains
National Park; rare (US Species of Concern, NC Rare). June-July. Endemic to the Great Smoky Mountains of w. NC and e. TN.
G. nubigena has nearly the same range as Rugelia nudicaulis, but is more restricted to seepage. The distinctions and relationship
between this taxon and G. grandis need further investigation. [= RAB, HC, K, W, Z]
Glyceria obtusa (Muhlenberg) Trinius, Coastal Mannagrass. Cp (NC, SC, VA), Mt (VA): blackwater swamp forests, wet
meadows, freshwater marshes; uncommon. June-September. Nova Scotia south to SC, on or near the Coastal Plain. [= RAB, C,
F, G, GW, HC, K, W, Z; = Panicularia obtusa (Muhlenberg) Kuntze – S]
Glyceria septentrionalis A.S. Hitchcock, Floating Mannagrass, Eastern Mannagrass. Cp, Pd (GA, NC, SC, VA), Mt (NC,
VA): shallow water, wet mucky soils, floodplain sloughs, cypress ponds; uncommon (GA Special Concern). May-June. MA
west to MN, south to SC, ne. GA, and TX. [= RAB, F, GW, HC, K, W, Z; < G. septentrionalis – C, G (also see G. arkansana);
= Panicularia septentrionalis (A.S. Hitchcock) Bicknell – S]
Glyceria striata (Lamarck) A.S. Hitchcock var. striata, Fowl Mannagrass. Mt, Pd, Cp (GA, NC, SC, VA): wet meadows,
seepages, bogs, marshes, swamp forests; common. April-June. Newfoundland west to British Columbia, south to FL and CA.
Var. stricta (Scribner) Fernald is more northern. [= C, F, G, HC, Z; < G. striata – RAB, GW, K, W; = Panicularia striata
(Lamarck) A.S. Hitchcock – S; = G. striata ssp. striata]
Gymnopogon Palisot de Beauvois (Beard Grass, Skeleton Grass)
A genus of about 15 species, in temperate and tropical areas of the Americas. References: Smith (1971)=Z.
Identification notes: When sterile, Gymnopogon is sometimes confused with Dichanthelium. Gymnopogon differs in having
the sheaths conspicuously overlapping (vs. not overlapping in Dichanthelium) and leaves that are definitely cordate-clasping and
of stiff texture (only a few Dichanthelium have this combination).
1 Awn of the lemma 4.5-12 mm long; inflorescence branches with spikelets distributed from the tip nearly to the base; leaves
5-15 mm wide; [of the Coastal Plain, Piedmont, and Mountains]...........................................................................G. ambiguus
1 Awn of the lemma 0.8-1.6 (-3.5) mm long; inflorescence branches with spikelets distributed from the tip nearly to the base
(G. chapmanianus) or to roughly the midpoint, the basal portion naked (or some branches rarely with a few spikelets) (G.
brevifolius); leaves 2-8 mm wide; [of the Coastal Plain and lower Piedmont].
2 Spikelets 1-flowered; first glume 2.3-3.7 mm long....................................................................................... G. brevifolius
2 Spikelets 2-4-flowered; first glume 3.8-5 mm long ............................................................................... G. chapmanianus
Gymnopogon ambiguus (Michaux) Britton, Sterns, & Poggenburg, Eastern Beard Grass. Cp, Pd (GA, NC, SC, VA), Mt
(NC, SC, VA): prairies, glades, barrens, dry pinelands and woodlands, dry fields; common (rare in Mountains). August-October.
S. NJ west to KY, OH, and MO, south to FL and TX. [= RAB, C, F, G, HC, K, S, W, Z]
Gymnopogon brevifolius Trinius, Pineland Beard Grass. Cp, Pd (GA, NC, SC, VA), Mt (GA): pine savannas, sandhills,
dry woodlands, prairies, calcareous glades; common (rare in lower Piedmont) (GA Special Concern, VA Watch List). August-
October. S. NJ south to FL, west to LA and AR; disjunct in the Highland Rim of KY and TN. [= RAB, C, F, G, HC, K, S, Z]
Gymnopogon chapmanianus A.S.Hitchcock, Chapman's Beard Grass. Cp (GA): sandhills and other xeric, sandy habitats;
rare (GA Special Concern). Se. GA south to FL. [= HC, K, S; > G. chapmanianus – Z; G. floridanus Swallen – Z]
Hackelochloa Kuntze (Pitscale Grass
* Hackelochloa granularis (Linnaeus) Kuntze, Pitscale Grass. Cp (GA): disturbed areas; rare, introduced from the Old
World. Reported for sw. GA and other Gulf Coast states (Thieret in FNA 2003a, Jones & Coile 1988, Kartesz 1999). [= FNA,
HC, K; = Rytilix granularis (Linnaeus) Skeels – S; = Mnesithea granularis (Linnaeus) Koning & Sosef]
References: Tucker (1996)=Z.
Hainardia W. Greuter (Thintail)
* Hainardia cylindrica (Willdenow) W. Greuter, Thintail. Cp (SC): waste areas around wool-combing mills; rare,
introduced from the Old World. April-June. [= K, Z; = Lepturus cylindricus (Willdenow) Trinius – RAB; = Monerma
cylindrica (Willdenow) Cosson & Durieu – HC]