Dichanthelium clandestinum
Dichanthelium nodatum
deer-tongue grass, deer-tongue rosette-panicgrass, deertongue, panic clandestin
sarita panicgrass, sarita rosette grass
50-140 cm, stout, pilose with papillose-based hairs to subglabrous;
fall phase branching from the mid- and upper culm nodes, with a few, nearly erect, elongate branches, sparsely rebranching, sheaths overlapping, concealing the secondary panicles;
nodes not swollen, glabrous or sparsely pubescent.
20-65 cm, decumbent to ascending even in spring, with hard, cormlike bases;
nodes puberulent to sparsely pubescent;
internodes scabrous-puberulent to papillose-hirsute;
fall phase with geniculate to decumbent culms, developing divaricate branches from the midculm nodes before the primary panicles mature.
5-10;
sheaths not overlapping, striate-ribbed, narrowing above midlength, hispid to sparsely hirsute, hairs sometimes papillose-based, summits mottled with pale spots, margins ciliate, collars puberulent;
ligules 0.4-0.9 mm, membranous;
blades 10-25 cm long, 15-30 mm wide, flat, lanceolate, often rigid, glabrous or sparsely pubescent, with 9-13 major veins and 40-80 minor veins, bases cordate, with papillose-based cilia, apices acuminate.
8-14;
sheaths not overlapping, puberulent to papillose-hirsute, margins ciliate;
ligules 0.1-1 mm, of hairs;
blades 3-9 cm long, 4-8 mm wide, thick, firm, puberulent, sides parallel above the rounded to truncate bases, margins with papillose-based cilia.
2.4-3.6 mm long, 1.2-1.5 mm wide, narrowly ellipsoid, sparsely pubescent.
3.4-4.4 mm long, 1.3-1.6 mm wide, narrowly obovoid-obpyriform, finely pubescent, hairs papillose-based, bases long, narrow.
1/3 – 1/2 as long as the spikelets, narrowly triangular;
upper glumes and lower florets slightly shorter than the spikelets, with 7 or 9 prominent veins;
lower florets sterile;
upper florets umbonate, apices with a minute tuft of hairs.
1.5-2 mm, attached about 0.2 mm below the upper glumes, partly or completely encircling the pedicels;
upper glumes about 0.3 mm shorter than the upper florets, purplish at the bases;
lower florets sterile;
upper florets with pointed, puberulent apices.
rosettes well-differentiated;
sheaths pubescent;
blades ovate to lanceolate.
rosettes absent.
panicles 8-16 cm long, 4-12 mm wide, exserted, with many spikelets.
panicles 3-13 cm long, 2-8 cm wide, exserted;
branches ascending to divaricate at maturity;
pedicels appressed.
, pers.
., 2001).
= 36.
= 18 (J.
Dichanthelium clandestinum
Dichanthelium nodatum
Dichanthelium clandestinum usually grows in semi-open areas in damp or sandy woodlands, thickets, or on banks. It is restricted to the eastern part of the Flora region. The primary panicles are open-pollinated for a brief period, and produced from late May to early July; the secondary panicles, which are cleistogamous and usually concealed within the sheaths, are produced from July through September.
Panicum recognitum Fernald refers to rare sterile hybrids with Dichanthelium dichotomum and perhaps D. scoparium; P. aculeatum Hitchc. & Chase to putative sterile hybrids with D. scabriusculum or D. dichotomum.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Dichanthelium nodatum grows in oak savannahs near the Gulf coast from Texas to northeastern Mexico. The primary panicles are produced from April into June (sometimes late August to November) and are at least partly open-pollinated; the secondary panicles are produced from May into fall and are at least partly cleistogamous.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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