Muhlenbergia lindheimeri

Hitchc.
Common names: Lindheimer's muhly
Treatment appears in FNA Volume 25. Treatment on page 192.

Plants perennial; cespitose, not rhizomatous. Culms 50-150 cm, stout, erect, not rooting at the lower nodes; internodes mostly glabrous, sometimes puberulent below the nodes. Sheaths shorter or longer than the internodes, glabrous, basal sheaths laterally compressed, keeled, not becoming spirally coiled when old; ligules 10-35 mm, firm and brown basally, membranous distally, acuminate; blades 25-55 cm long, 2-5 mm wide, flat or folded, firm, scabridulous abaxially, scabrous and shortly pubescent adaxially. Panicles 15-50 cm long, 0.6-3 cm wide, often purplish-tinged; primary branches 0.5-7 cm, appressed or strongly ascending, rarely spreading as much as 20° from the rachises; pedicels 0.5-1.2 mm, scabrous. Spikelets 2.4-3.5 mm, light grayish. Glumes equal, 2-3.5 mm, shorter than or equal to the florets, scabrous or smooth, 1-veined, obtuse to acute, occasionally bifid and the teeth to 0.3 mm, unawned, rarely mucronate, mucros less than 0.2 mm; lemmas 2.4-3.5 mm, lanceolate, scabrous or smooth, rarely puberulent near the base, apices obtuse to acute, unawned or awned, awns to 4 mm, straight; paleas 2.4-3.5 mm, lanceolate, obtuse; anthers 1.1-1.5 mm, purplish. Caryopses 1.2-1.6 mm, fusiform, reddish-brown. 2n = 20, 26.

Discussion

Muhlenbergia lindheimeri grows in sandy draws to rocky, calcareous soils, generally in open areas, at elevations of 150-500 m. It is an uncommon species throughout its range, which includes northern Mexico in addition to southern Texas, but it is also grown as an ornamental. It differs from the closely related M. longiligula in its compressed-keeled basal sheaths, grayish spikelets, and, when present, bifid glume apices.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Muhlenbergia lindheimeri"
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
obtuse +  and acute +
Paul M. Peterson +
Hitchc. +
1 (?) +  and 3 (?) +
straight +
multiple +, , +  and single +
curled +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
keeled +  and rounded +
keeled +  and compressed +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
25 cm250 mm <br />0.25 m <br /> (55 cm550 mm <br />0.55 m <br />) +
scabridulous +
folded +  and flat +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
spikelike +
with hairs +  and glabrous +
reddish-brown +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Lindheimer's muhly +
not rooting +
geniculate +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
not waisted +
capillary +
pistillate +  and staminate +
bisexual +  and fertile +
round +  and compressed +
reduced +
shorter or longer +
subtending +
obtuse +  and acute +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
puberulent +  and glabrous +
not absent +
lanceolate +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
acuminate +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
membranous +  and firm +
inconspicuous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
concealed +  and prominent +
2 +  and 1 +
obtuse +  and lanceolate +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
purplish-tinged +
15cm +  and 50cm +
cleistogamous +
spikelike +
0.6 cm6 mm <br />0.006 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
dry +  and fleshy +
spreading;ascending;appressed +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
spikelike +
shorter or longer +
light grayish +
1 +  and 60 +
compressed +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Muhlenbergia lindheimeri +
Muhlenbergia +
species +
membranous +
mucronate +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
shorter than to longer than the florets +
7 (?) +  and 13 (?) +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +