Part 7 - UNC Herbarium

POACEAE 844
Andropogon glomeratus (Walter) Britton, Sterns, & Poggenburg var. glomeratus. Cp, Pd, Mt (GA, NC, SC, VA):
swamps, wet savannas, pine flatwoods, wet disturbed sites; common. September-October. S. MA south to c. peninsular FL and
west to s. MS, primarily on the Coastal Plain, but scattered inland to w. PA, WV, c. KY, c. TN and AR. [= FNA, K, Z; < A.
virginicus – RAB; = A. virginicus var. abbreviatus (Hackel) Fernald & Griscom – C, F, G, GW; < A. glomeratus – HC, S, W]
Andropogon glomeratus (Walter) Britton, Sterns, & Poggenburg var. hirsutior (Hackel) C. Mohr. Cp (GA, NC, SC, VA):
wet savannas, pine flatwoods, adjacent ditches, other wet disturbed sites; common. September-October. E. MD south to c.
peninsular FL west to se. LA. This taxon should be recognized at the specific level, but the appropriate combination has not been
made. [= FNA, K, Z; < A. virginicus – RAB; ? A. virginicus var. glaucopsis (Elliott) A.S. Hitchcock – G, misapplied; = A.
virginicus var. hirsutior (Hackel) A.S. Hitchcock; < A. glomeratus – HC, S]
Andropogon longiberbis Hackel, Longbeard Bluestem. Cp (GA, NC, SC): dry sandy soils of sandhills and dunes; rare (GA
Special Concern, NC Watch List). September-October. Se. NC south to s. and w. FL, and in the Bahamas. [= FNA, HC, K, S,
Z]
Andropogon mohrii (Hackel) Hackel ex Vasey, Tawny Bluestem, Bog Bluestem. Cp (GA, NC, SC, VA): wet savannas,
sphagnous bogs; rare (GA Special Concern, NC Rare, VA Rare). September-October. Se. VA south to n. FL, west to LA. [=
RAB, C, F, G, GW, HC, K, S; = A. liebmannii Hackel var. pungensis (Ashe) C.S. Campbell – FNA, Z]
Andropogon perangustatus Nash, Narrow-leaved Bluestem. Cp (GA, NC, SC, VA): clay-based Carolina bays and boggy
wetlands; rare (NC Watch List, VA Watch List). August-October. E. VA south to c. peninsular FL, east to e. TX. Growth form,
general appearance, and habitat (dense bluish tussocks with very narrow leaves and long ligules, growing in wet areas such as
clay-based Carolina bays) make A. perangustatus readily recognizable. [= HC, S; = A. gyrans Ashe var. stenophyllus (Hackel)
C.S. Campbell – FNA, K, Z; = A. elliottii Chapman var. stenophyllus (Hackel) D.B. Ward]
Andropogon tenuispatheus (Nash) Nash. Cp (GA, NC, SC, VA), Pd (GA, NC, SC): maritime wet grasslands, brackish
marsh edges, moist disturbed sites; common (VA Watch List). September-October. Se. VA and c. OK south to s. FL and w. TX,
also south into Central America and the Caribbean. [< A. virginicus – RAB; = A. glomeratus (Walter) Britton, Sterns, &
Poggenburg var. pumilus Vasey ex Dewey – FNA, K, Z ("robust variant"); < A. glomeratus – HC, S]
Andropogon ternarius Michaux var. ternarius, Splitbeard Bluestem. Cp, Pd, Mt (GA, NC, SC, VA): dry to moist soils;
common (uncommon in Mountains). September-October. Var. ternarius ranges from DE west to KY and s. MO, south to FL
and TX. Var. cabanisii (Hackel) Fernald & Griscom is endemic in s. and c. peninsular FL. [= FNA, K, Z; < A. ternarius – RAB,
C, G, W; > A. ternarius var. ternarius – F; > A. ternarius var. glaucescens (Scribner) Fernald & Griscom – F; = A. ternarius –
HC, S]
Andropogon tracyi Nash, Tracy's Bluestem. Cp, Pd (GA, NC, SC): dry sandy or clayey soils of sandhills, disturbed sites;
rare (NC Watch List). September-October. E. NC south to s. FL and west to MS. [= FNA, HC, K, S, Z]
Andropogon virginicus Linnaeus var. decipiens C.S. Campbell, Deceptive Bluestem. Cp (GA, NC, SC, VA): savannas,
flatwoods, maritime wet grasslands, disturbed pinelands; uncommon (VA Watch List). September-October. Se. VA south to s.
FL and west to w. FL; also in the Bahamas (Sorrie & LeBlond (1997). [= FNA, K, Z (1986); < A. virginicus – RAB, S; < A.
virginicus var. virginicus – F, G, HC; = A. virginicus var. virginicus – Z (1983 – "deceptive variant")]
Andropogon virginicus Linnaeus var. virginicus, Old-field Broomstraw, Broomsedge, "Sedge Grass", "Sage Grass". Cp,
Pd, Mt (GA, NC, SC, VA): old fields, roadbanks, disturbed sites; common. September-October. Widespread, from MA west to
MI and e. KA, south to FL and e. TX, and in the Caribbean and Central America. Campbell (1983) recognized 3 "variants"
within A. virginicus var. virginicus; the "deceptive variant" he later (1986) described formally as var. decipiens (see above). The
"old-field variant" is the common "variant" in our area, occurring abundantly throughout the state. It has green stem internodes
and the leaves usually pubescent, at least on the margins near the collar. The "smooth variant" is known only from the Coastal
Plain and is apparently rare in our area, known from NC and SC (Berkeley and Marion counties; P. McMillan, pers. comm.). It
has glaucous stem internodes and glabrous leaves. It is unclear whether the "smooth variant" warrants taxonomic recognition. [=
FNA, K, Z ("oldfield variant" and "smooth variant"); < A. virginicus – RAB, S, W; < A. virginicus var. virginicus – C; < A.
virginicus var. virginicus – G, HC (also see var. decipiens); >< A. virginicus var. virginicus – F; > A. virginicus var.
tetrastachyus (Elliott) Hackel – F]
Anthenantia Palisot de Beauvois (Silkyscale)
A genus of 3 species, of se. North America (or 4-5 species of se. North America and tropical America, if Leptocoryphium is
included in Anthenantia). Clayton & Renvoize (1986) state that "Anthenantia is the etymologically correct version of three
alternative spellings given by Beauvois." References: Wipff in FNA (2003a); Crins (1991)=Z; Kral (2004)=Y; Clayton &
Renvoize (1986).
1 Leaves mostly 3-5 mm wide, ascending to erect, not squarrose (lacking a sharp bend outward at the summit of the sheath),
medium green, with a very short taper to a blunt or rounded apex, the lower sheaths crowded and keeled (therefore
distichous), generally suffused with purple; spikelets usually purple (fading tan); leaf margins scaberulous .................A. rufa
1 Leaves mostly 5-10 mm wide, spreading, usually squarrose (with a sharp bend outward at the summit of the sheath),
yellowish green, with a long taper to a sharp apex, the lower sheaths not crowded, keeled, or distichous, green; spikelets
usually green (fading yellow); leaf margins papillose-ciliate towards the base ........................................................... A. villosa
Anthenantia rufa (Nuttall) J.A. Schultes, Purple Silkyscale. Cp (GA, NC, SC): wet savannas in the outer Coastal Plain,
seepage bogs and moist sandhill-pocosin ecotones in the fall-line sandhills; rare (NC Watch List, SC Rare). September-October.