Swallenia alexandrae
Common names: Eureka valley dunegrass
Endemic
Synonyms: Ectosperma alexandrae
Treatment appears in FNA Volume 25. Treatment on page 24.
Culms 10-40 (60) cm, stiff, erect; nodes villous. Sheaths villous on the upper margins; blades 5-14 cm long, 3-8 mm wide. Panicles 4-10 cm; branches to 35 mm, with 1-3 spikelets. Spikelets 10-15 mm, persistent. Glumes 9-14 mm; lemmas 7-9 mm. Caryopses about 4 mm long, about 2 mm in diameter. 2n = 20.
Discussion
Swallenia alexandrae grows on sand dunes in Inyo County, California. It is only known from four sites, all between 900-1200 m, in the Eureka Valley of northern Inyo County. At these sites, it forms dense colonies 1-2 m across. It is state-listed as rare and federally-listed as endangered because of off-road vehicle activity.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Swallenia alexandrae"
absent +
common +
absent +
bulliform +
absent +
membranous +
kranz +
absent +
absent +
arising +
close +
not fused +
membranous +
thick +
veined +
adaxial +
pointed +
erect +
1;many +
spikelike +
hairy +
free +
4 cm40 mm <br />0.04 m <br /> (?) +
falling +
sometimes longer +
membranous +
single +
Eureka valley dunegrass +
branched +
annual +
stiff +
climbing +
floating +
erect +
not woody +
reduced +
Calif. +
absent +
not waisted +
large +
hard +
capillary +
adjacent +
shorter +
sometimes longer +
bisexual +
reduced +
absent +
shorter +
longer +
subtending +
acuminate +
subequal +
lacking +
coarse +
uncinate +
punctate +
Present +
pistillate +
distinct +
axillary +
elongate +
not absent +
distichous +
basal +
5-7-veined +
adjacent +
villous +
mucronate +
sometimes longer +
absent +
absent +
inconspicuous +
5-7-veined +
adjacent +
stiff +
coarse +
absent +
simple +
villous +
glabrous +
keeled +
simple +
contracted +
separating +
free +
spikelike +
evident +
woody +
open +
closed +
villous +
Endemic +
persistent +
attached +
distal +
absent +
sterile +
compressed +
absent +
separate +
staminate +
Swallenia alexandrae +
Swallenia +
species +
dioecious +
hyaline +
membranous +
7-11-veined +
absent +
clumped +
perennial +
varied +