Bothriochloa edwardsiana

(Gould) Parodi
Common names: Merrills bluestem
Treatment appears in FNA Volume 25. Treatment on page 644.

Culms 35-65 cm, slender, stiffly erect, rarely geniculate; lower nodes shortly hairy, hairs shorter than 3 mm, usually off-white and ascending; upper nodes glabrous or glabrate. Leaves mostly basal, glaucous; ligules 1-1.5 mm; blades 10-25 cm long, 1-2 (3.5) mm wide, flat to rolled, with 3-7 mm hairs below the middle. Panicles 6-12 cm, loose, fan-shaped; rachises shorter than 5 cm, with 3-6 branches; branches longer than the rachises, not rebranched, with 1 rame; rame internodes with 3-5 mm marginal hairs. Sessile spikelets 5-8 mm, lanceolate; lower glumes 5.5-7 mm, glabrous, shiny, with a deep dorsal pit, tapering to a narrow, slightly bifid apex; awns 20-28 mm; anthers 0.5-1 mm. Pedicellate spikelets 2.5-3.5 mm, sterile. 2n = 60.

Discussion

Bothriochloa edwardsiana grows in the rocky plains and prairies of the Edwards Plateau of Texas, on calcareous soil, at 300-600 m. It also grows in northern Mexico and Uruguay. It resembles B. hybrida in some respects, but that species has a more robust habit, predominantly cauline foliage, and wider leaf blades.

Selected References

None.

Lower Taxa

None.

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

... more about "Bothriochloa edwardsiana"
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
anatomy +  and kranz +
Kelly W. Allred +
(Gould) Parodi +
1 (?) +  and 3 (?) +
geniculate +
2 cm20 mm <br />0.02 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
pseudopetiolate +
non-radiate +  and radiate +
well-developed +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
flat +  and rolled +
reduced +
1mm;2mm +
not rebranched +
spikelike +
flattened +, lanceolate +  and oblong +
Merrills bluestem +
purple +  and reddish +
geniculate +
slender +
35 cm350 mm <br />0.35 m <br /> (65 cm650 mm <br />0.65 m <br />) +
not woody +
capillary +
sometimes longer +
concealing +
compressed +  and terete +
shorter or longer +
subtending +
compressed +  and rounded +
unequal +
uncinate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
bracteate +  and ebracteate +
pedunculate +  and multiple-stalked +
axillary +  and subtending +
solid +  and hollow +
photosynthetic +
not aromatic +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
complex +  and simple +
concealed +  and prominent +
sessile-pedicellate +
heterogamous +
fan--shaped +
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
fused +  and free +
dry +  and fleshy +
elongate +
pedicellate +  and sessile +
in triplets +  and paired +
well-developed +
lanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Gramineae +
Bothriochloa edwardsiana +
Bothriochloa +
species +
membranous +
sessile-pedicellate +
glabrate +  and glabrous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +