Bouteloua trifida var. burkii

(Scribn. ex S. Watson) Vasey ex L.H. Dewey
Treatment appears in FNA Volume 25. Treatment on page 264.
Revision as of 04:47, 30 July 2020 by imported>Volume Importer
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Panicle branches ascending to divergent, rarely appressed. Lower glumes 1.7-3.1 mm, veins excurrent for 0.05-0.2 mm, usually not exceeding the apical lobes; upper glumes 1.9-3.2 mm, veins excurrent for 0.05-0.2 mm, usually not exceeding the apical teeth; lower lemmas conspicuously appressed-pubescent across the lower 2/3 - 4/5 and along most or all of the margins, awns 2.2-4.5 mm; anthers 0.2-0.3 mm. Caryopses 0.8-1.2 mm long, 0.5-0.6 mm wide, flat or slightly concave adaxially. 2n = 20.

Discussion

Bouteloua trifida var. burkii grows in southern New Mexico, southern Texas, and adjacent Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

1 +  and 3 +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
J.K. Wipff +
(Scribn. ex S. Watson) Vasey ex L.H. Dewey +
1 (?) +  and 3 (?) +
well-developed +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
0.7 cm7 mm <br />0.007 m <br /> (8 cm80 mm <br />0.08 m <br />) +
pubescent +  and glabrous +
scabridulous +
usually linear +  and lanceolate occasionally ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
subdigitate +  and digitate +
75 cm750 mm <br />0.75 m <br /> (?) +
straight +  and slightly arcuate +
persistent +
appressed;ascending;appressed;ascending;spreading +
spikelike +
0.7 cm7 mm <br />0.007 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
not woody +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
concave +  and flat +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
geniculate +
slender +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
not woody +
N.Mex. +  and Tex. +
not waisted +
capillary +
pistillate +  and staminate +
4-lobed +  and trilobed +
sometimes longer +
rudimentary +
round +  and compressed +
reduced +
shorter or longer +
subtending +
both +  and 1 +
acuminate +  and acute +
subequal +  and unequal +
not papillose-based +  and papillose-based +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
5-veined +, 7-13-veined +  and 1-3-veined +
sometimes longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
tapering +
membranous +
inconspicuous +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
appressed-pubescent +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
appressed-pubescent +
concealed +  and prominent +
2 +  and 1 +
3 cm30 mm <br />0.03 m <br /> (9 cm90 mm <br />0.09 m <br />) +
dry +  and fleshy +
spikelike +
elongate +
flabellate +
persistent +
scabridulous +
flattened +
sessile +  and subsessile +
8 +  and 24 +
pectinate +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Bouteloua trifida var. burkii +
Bouteloua trifida +
variety +
membranous +
pubescent +  and glabrous +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
7 (?) +  and 13 (?) +
extended +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
plant +  and cespitose +
aquatic +  and terrestrial +