Dichanthelium clandestinum
Dichanthelium leibergii
deer-tongue grass, deer-tongue rosette-panicgrass, deertongue, panic clandestin
Leiberg's panicum, Leiberg's rosette grass, leibergs panicgrass
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.
24-80 cm, glabrous or puberulent;
nodes sparsely, spreading-pilose;
internodes mostly elongated, glabrous or puberulent;
fall phase with a few suberect branches from the lower and midculm nodes, blades slightly reduced, secondary panicles partially exserted.
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.
3-4;
sheaths not overlapping, with ascending papillose-based hairs;
ligules 0.3-0.5 mm, membranous, ciliate, cilia longer than the membranous portion;
blades 5-15 cm long, 7-13 mm wide, ascending to erect, sparsely to densely pubescent with papillose-based hairs, with 9-11 prominent major veins and 25-50 minor veins, bases truncate to cordate, margins with papillose-based cilia.
6-10 cm long, 3-5 cm wide, their length usually less than twice their width, eventually well-exserted, with 20-40 spikelets;
branches spreading to ascending.
2.4-3.6 mm long, 1.2-1.5 mm wide, narrowly ellipsoid, sparsely pubescent.
3.3-3.8 mm long, 1.6-2 mm wide, ellipsoid-obovoid, turgid, pubescent, hairs papillose-based, apices rounded.
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.
about 1.8 mm, narrowly triangular;
lower florets staminate;
upper florets mucronate.
rosettes well-differentiated;
sheaths pubescent;
blades ovate to lanceolate.
rosettes well-differentiated;
blades few, small, ovate to lanceolate.
panicles 8-16 cm long, 4-12 mm wide, exserted, with many spikelets.
= 36.
= 18.
Dichanthelium clandestinum
Dichanthelium leibergii
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 leibergii grows primarily on prairie relics, but is occasionally found in sandy woodlands. It is restricted to the Flora region. The primary panicles are produced from mid-May through July, the secondary panicles from late June to September. Sterile putative hybrids with D. acuminatum and D. xantho-physum are occasionally found.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Go Botany
IL Wildflowers
KS Wildflowers
LA Plants
MD Biodiversity
MI Flora
MO Plants
WildflowerSearch
iNaturalist
USDA Plants Database
MN Wildflowers
