Anthenantia

P. Beauv.
Treatment appears in FNA Volume 25. Treatment on page 384.

Plants perennial; rhizomatous. Culms 60-120 cm, stiffly erect, clustered. Sheaths open; ligules 0.1-0.3 mm, membranous, ciliate; blades flat, stiff, upper blades much reduced. Inflorescences terminal, simple panicles with elongate rachises; branches ascending to erect, not spikelike, lower branches usually with 8 or more spikelets; disarticulation beneath the glumes. Spikelets 3-4 mm, laterally compressed neither subtended by bristles nor sunken into the rachis, elliptic, obovoid, hirsute, unawned, with 2 florets. Lower glumes absent; upper glumes as long as the spikelets, obovate, densely hirsute, 5-veined; lower florets sterile or staminate; lower lemmas densely hirsute, similar to the upper glumes; lower paleas present or absent; upper lemmas and upper paleas cartilaginous, glabrous, dark-brown, separating slightly at maturity, exposing the caryopses, lemmas 3-veined, margins flat, hyaline, 0.5-1 mm wide, paleas 2-veined. x = 10.

Discussion

Anthenantia is a genus of two species, both of which are endemic to the southeastern United States. It is very similar to Leptocoryphium Nees, a monotypic genus that extends from Mexico to Argentina, but differs in having laterally, rather than dorsally, compressed spikelets.

Key

1 Junction of the sheath and blade not evident abaxially, the sheath and blades in line with each other; blades 2-5 mm wide, the margins scabrous; leaves 30-60 cm long Anthenantia rufa
1 Junction of the sheath and blade evident, the blades not in line with the sheaths; blades 5-10 mm wide, the margins papillose-hispid; leaves mostly less than 30 mm long Anthenantia villosa

"decumbent" is not a number."elongated" is not a number.

... more about "Anthenantia"
anatomy +  and kranz +
J.K. Wipff +
P. Beauv. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
usually linear +  and lanceolate occasionally ovate +
ascending;erect +
not spikelike +
not developed +
terete +  and compressed +
sometimes longer +
branched +  and solid +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
membranous +
inconspicuous +
0.5mm;1mm +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
dry +  and fleshy +
elongate +
clayton1986a +
in triplets +  and paired +
1 +  and 60 +
unisexual +  and bisexual +
obovoid +  and compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Gramineae +
Anthenantia +
Poaceae tribe Paniceae +
membranous +
cartilaginous +, coriaceous +  and indurate +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +