familyPoaceae
subfamilyPoaceae subfam. Chloridoideae
genusBouteloua
subgenusBouteloua subg. Bouteloua
speciesBouteloua aristidoides
Bouteloua aristidoides var. arizonica
Common names: Arizona needle grama
Treatment appears in FNA Volume 25. Treatment on page 257.
Panicle branches 15-35 mm to the base of the terminal spikelets and extending an additional 1.5-5 (7) mm, with 6-10 spikelets.
Discussion
Bouteloua aristidoides var. arizonica grows in the same kind of habitats as var. aristidoides, but only from 500-800 m. It has a more restricted range than B. aristidoides var. aristidoides (which extends into northern Mexico), being known only from New Mexico, Arizona, and Chihuahua, Mexico. In its extreme form, var. arizonica is very different from var. aristidoides, but the two varieties do intergrade.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Bouteloua aristidoides var. arizonica"
absent +
common +
absent +
bulliform +
absent +
membranous +
2.5 cm25 mm <br />0.025 m <br /> (?) +
entire +
kranz +
absent +
absent +
3-awned +
pubescent +
pubescent +
well-developed +
arising +
close +
not fused +
membranous +
thick +
not pseudopetiolate +
adaxial +
racemose +
75 cm750 mm <br />0.75 m <br /> (?) +
deciduous +
pubescent +
4;15 +
spikelike +
not woody +
sometimes longer +
membranous +
single +
Arizona needle grama +
branched +
annual +
climbing +
floating +
not woody +
staminate +
exserted +
sterile +
reduced +
varying +
bifurcate +
absent +
not waisted +
large +
hard +
capillary +
adjacent +
shorter +
3-veined +
sometimes longer +
2-veined +
rudimentary +
bisexual +
reduced +
absent +
1-veined +
shorter +
shorter or longer +
subtending +
glabrous +
scabrous +
unequal +
papillose-based +
lacking +
coarse +
uncinate +
punctate +
Present +
pistillate +
distinct +
axillary +
elongate +
excurrent +
acuminate +
not absent +
distichous +
basal +
acuminate +
sometimes longer +
absent +
membranous +
absent +
inconspicuous +
usually shorter +
glabrous +
subulate +
narrow +
sterile +
glabrous +
adjacent +
stiff +
coarse +
absent +
simple +
extended +
branched +
decumbent +
geniculate +
glabrous +
keeled +
simple +
separating +
free +
spikelike +
prolonged +
evident +
elongate +
flabellate +
open +
closed +
imbricate +
attached +
appressed +
distal +
absent +
bisexual +
absent +
separate +
staminate +
Bouteloua aristidoides var. arizonica +
Bouteloua aristidoides +
variety +
dioecious +
hyaline +
membranous +
divergent +
excurrent +
absent +
pubescent +
annual +
synoecious +
various +