Muhlenbergia elongata

Scribn. ex Beal
Common names: Sycamore muhly
Synonyms: Muhlenbergia ×erophila
Treatment appears in FNA Volume 25. Treatment on page 190.

Plants perennial; cespitose, not rhizomatous. Culms 40-120 cm, erect, not conspicuously branched; internodes mostly smooth, sometimes scabridulous below the nodes. Sheaths longer than the internodes, smooth or scabridulous, rounded towards the base, not becoming spirally coiled when old; ligules 2-8 mm, firm below, membranous distally, obtuse to acute; blades 15-50 cm long, 0.3-1.5 mm wide, flat to involute, smooth or scabridulous abaxially, hirtellous adaxially. Panicles 15-50 cm long, 1-7 cm wide, loosely contracted, not dense; primary branches 1-8 cm, appressed or diverging up to 30° from the rachises, naked basally; pedicels 1.3-8 mm, hispidulous. Spikelets 3-4.2 mm. Glumes subequal, 2-3 mm, exceeded by the florets, glabrous below, minutely pubescent or scabridulous distally, 1-veined, acuminate to acute, unawned or awned, awns to 1.6 mm; lemmas 2.8-4.2 mm, narrow, lanceolate, calluses hairy, hairs to 1 mm, lemma bodies glabrous and smooth below, scabridulous distally, apices acuminate, awned, awns 8-40 mm, straight to flexuous, demarcation of the awns from the lemma bodies not evident; paleas 2.8-4.2 mm, narrowly lanceolate, glabrous, acuminate; anthers 1.4-2.2 mm, yellow. Caryopses 2-2.2 mm, fusiform, brownish. 2n = unknown.

Discussion

Muhlenbergia elongata grows on rock outcrops, cliffs, canyon walls, and moist rock walls, on rhyolitic and volcanic conglomerates, at elevations of 850-2100 m. It extends south from Arizona into northern Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Muhlenbergia elongata"
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Paul M. Peterson +
Scribn. ex Beal +
1 (?) +  and 3 (?) +
straight +  and flexuous +
multiple +, , +  and single +
curled +
0.8 cm8 mm <br />0.008 m <br /> (4 cm40 mm <br />0.04 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
15 cm150 mm <br />0.15 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabridulous +  and smooth +
flat +  and involute +
0.3mm;1.5mm +
spikelike +
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Sycamore muhly +
geniculate +
40 cm400 mm <br />0.4 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
not waisted +
capillary +
pistillate +  and staminate +
bisexual +  and fertile +
round +  and compressed +
reduced +
shorter or longer +
subtending +
pubescent +  and glabrous +
scabridulous +
acuminate +  and acute +
subequal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
uncinate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
lanceolate +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
obtuse +  and acute +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
membranous +  and firm +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
acuminate +  and lanceolate +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
15cm +  and 50cm +
cleistogamous +
spikelike +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
dry +  and fleshy +
diverging;appressed +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
spikelike +
scabridulous +  and smooth +
1 +  and 60 +
compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Muhlenbergia ×erophila +
Muhlenbergia elongata +
Muhlenbergia +
species +
membranous +
shorter than to longer than the florets +
7 +  and 13 +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +