Flora of North America species comparison

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Dichanthelium leibergii

Leiberg's panicum, Leiberg's rosette grass, leibergs panicgrass
Habit Plants cespitose, with knotty rhizomes no more than 2 mm thick.
Culms

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.
Cauline leaves

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.
Panicles

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.
Spikelets

3.3-3.8 mm long, 1.6-2 mm wide, ellipsoid-obovoid, turgid, pubescent, hairs papillose-based, apices rounded.
Lower glumes

about 1.8 mm, narrowly triangular;

lower florets staminate;

upper florets mucronate.
Basal

rosettes well-differentiated;

blades few, small, ovate to lanceolate.
2n

= 18.

Dichanthelium leibergii
Distribution
from FNA
IA; IL; IN; KS; MI; MN; MO; ND; NE; NY; OH; PA; SD; WI; AB; MB; ON; SK
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)
Source FNA vol. 25, p. 416.
Parent taxa Poaceae > subfam. Panicoideae > tribe Paniceae > Dichanthelium > sect. Macrocarpa
Sibling taxa
D. aciculare, D. acuminatum, D. boreale, D. boscii, D. chamaelonche, D. clandestinum, D. commutatum, D. consanguineum, D. depauperatum, D. dichotomum, D. ensifolium, D. erectifolium, D. latifolium, D. laxiflorum, D. linearifolium, D. malacophyllum, D. nodatum, D. nudicaule, D. oligosanthes, D. ovale, D. pedicellatum, D. perlongum, D. polyanthes, D. portoricense, D. ravenelii, D. scabriusculum, D. scoparium, D. sphaerocarpon, D. strigosum, D. tenue, D. wilcoxianum, D. wrightianum, D. ×anthophysum
Synonyms Panicum leibergii
Name authority (Vasey) Freckmann
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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