Aristida ternipes

Cav.
Treatment appears in FNA Volume 25. Treatment on page 323.

Plants perennial; cespitose. Culms 25-120 cm, wiry, erect to sprawling, unbranched. Leaves basal and cauline; sheaths usually longer than the internodes, glabrous; collars glabrous or strigillose; ligules less than 0.5 mm; blades 5-40 cm long, 1-2.5 mm wide, flat to folded, straight to lax at maturity, adaxial surfaces with scattered, 1.5-3 mm hairs near the ligule. Inflorescences paniculate, 15-40 cm long, (8) 10-35 (45) mm wide; rachis nodes glabrous or strigillose; primary branches 5-25 cm, remote, stiffly ascending to divaricate, with axillary pulvini, usually naked near the base; secondary branches and pedicels usually appressed. Spikelets usually congested. Glumes 9-15 mm, subequal, 1-veined, acuminate; calluses 1-1.2 mm; lemmas 9-15 mm long, smooth to tuberculate-scabrous, narrowing to slightly keeled, usually not twisted, 0.1-0.2 mm wide apices, junction with the awns not evident; awns not disarticulating at maturity, unequal or almost equal; central awns 8-25 (30) mm, straight to arcuate at the base; lateral awns absent or to 0-23 mm; anthers 3, 1.2-2.4 mm. Caryopses 6-8 mm, light brownish. 2n = 22, 24.

Discussion

Selected References

None.

Key

1 Lateral awns 2-23 mm long Aristida ternipes var. gentilis
1 Lateral awns 0-2 mm long Aristida ternipes var. ternipes

"decumbent" is not a number."elongated" is not a number.

... more about "Aristida ternipes"
0.12 cm1.2 mm <br />0.0012 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Kelly W. Allred +
not disarticulating +
1 (?) +  and 3 (?) +
straight +
ascending +  and spreading +
not evident +
unequal +
keeled +  and rounded +
coiled +, disarticulating +  and twisted +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
straight +
straight +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
flat +  and folded +
1mm;2.5mm +
spikelike +
well-developed +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
light brownish +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
non-radiate +  and radiate +
straight +  and arcuate +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
strigillose +  and glabrous +
unbranched +  and wiry +
erect +  and sprawling +
25 cm250 mm <br />0.25 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
not woody +
Calif. +, Ariz. +, N.Mex. +  and Tex. +
large +  and small +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
subtending +
acuminate +
subequal +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
15cm +  and 40cm +
cauline +  and basal +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
smooth to tuberculate-scabrous +
scabridulous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
coriaceous +
narrowing +
indistinguishable +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
concealing +
0 +  and 1/2 +
dry +  and fleshy +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
not prolonged +
strigillose +  and glabrous +
usually longer +
1 (?) +  and Anatomy (?) +
1 +  and 60 +
1 (?) +  and 3 (?) +
triangular +  and dome--shaped +
2 (?) +  and 3 (?) +
Gramineae +
Aristida ternipes +
Aristida +
species +
membranous +
plant +  and cespitose +
aquatic +  and terrestrial +