Orcuttia californica

Vasey
Common names: California orcuttgrass
Treatment appears in FNA Volume 25. Treatment on page 291.
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Plants sparsely hairy. Culms 5-15 (20) cm, simple, sometimes geniculate, usually prostrate and forming mats. Leaves with a faint collar line usually evident when dry; blades 1-2 cm long, 2-3 mm wide. Spikes 3-6 cm; lower internodes 5-10 mm; upper internodes about 1 mm. Spikelets with 5-15 (25) florets. Glumes subequal or the lower glumes a little shorter than the upper, 2-3 (4) mm, irregularly toothed; lemmas about 5 mm, teeth equal or the central tooth a little longer than the others, awns to 0.5 mm; paleas about equal to the lemmas; anthers about 2 mm. Caryopses 1.5-1.8 mm, narrowly elliptical; embryos at least 3/4 as long as the caryopses. 2n = 32.

Discussion

Orcuttia californica grows at elevations below 625 m in Los Angeles, Riverside, and San Diego counties, California and northern Baja California, Mexico. It is listed as an endangered species by the U.S. Fish and Wildlife Service.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."/3" is not declared as a valid unit of measurement for this property.

... more about "Orcuttia californica"
pinkish +  and white +
2 cm20 mm <br />0.02 m <br /> (?) +
John R. Reeder +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
mushroom-button--shaped +
usually linear +  and lanceolate occasionally ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
spikelike +
oblong +  and elliptic +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
dumbbell--shaped +
evident +  and faint +
California orcuttgrass +
ascending +  and erect +
geniculate +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 15 +
round +  and compressed +
shorter or longer +
subtending +
2-5-toothed +
subequal +
uncinate +
spicate +  and ebracteate +
paniculate +  and racemose +
clavate +  and capitate +
hollow +  and solid +
not absent +
5 cm50 mm <br />0.05 m <br /> (?) +
truncate +  and slightly emarginate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
subequal +  and or slightly shorter +
dry +  and fleshy +
disarticulating +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
pedicellate +  and sessile +
1 +  and 60 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
filiform +  and elongate +
Gramineae +
Orcuttia californica +
Orcuttia +
species +
membranous +
1/3 (?) +  and 1/2 (?) +
mucronate +
1 cm10 mm <br />0.01 m <br /> (?) +
conspicuous +
aquatic +  and terrestrial +
viscid-aromatic +
dioecious +, monoecious +  and synoecious +