Orcuttia inaequalis

Hoover
Common names: San joaquin orcuttgrass
Endemic
Treatment appears in FNA Volume 25. Treatment on page 291.
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Plants cespitose, conspicuously hairy, grayish. Culms 5-15 (25) cm, usually ascending to erect, occasionally spreading and forming mats. Leaves usually without a collar line; blades 1-4 cm long, 2-4 mm wide. Spikes 2-3.5 (5) cm, more or less capitate, usually densely congested; lower and upper internodes 1-4 mm. Spikelets with 4-20 (30) florets. Glumes subequal, about 3 mm, irregularly toothed; lemmas 4-5 mm, teeth about 1/2 as long as the lemma, central tooth conspicuously longer than the others, teeth sharp, if awn-tipped, awns less than 0.5 mm; paleas about equal to the lemmas; anthers about 2 mm. Caryopses 1.3-1.5 mm, broadly elliptical; embryos about as long as the caryopses. 2n = 24.

Discussion

Orcuttia inaequalis grows at elevations below 575 m in Fresno, Madera, Merced, Stanislaus, and Tulare counties, California. It is listed as a threatened 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 inaequalis"
pinkish +  and white +
2 cm20 mm <br />0.02 m <br /> (?) +
John R. Reeder +
Hoover +
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 /> (4 cm40 mm <br />0.04 m <br />) +
mushroom-button--shaped +
usually linear +  and lanceolate occasionally ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spikelike +
oblong +  and elliptic +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
dumbbell--shaped +
conspicuously longer +
San joaquin orcuttgrass +
prostrate +  and decumbent +
spreading +, usually ascending +  and erect +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
4 +  and 20 +
round +  and compressed +
shorter or longer +
subtending +
toothed +
subequal +
3 cm30 mm <br />0.03 m <br /> (?) +
uncinate +
spicate +  and ebracteate +
paniculate +  and racemose +
clavate +  and capitate +
hollow +  and solid +
not absent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
truncate +  and slightly emarginate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
subequal +  and or slightly shorter +
dry +  and fleshy +
disarticulating +
5 cm50 mm <br />0.05 m <br /> (?) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
pedicellate +  and sessile +
1 +  and 60 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
filiform +  and elongate +
Gramineae +
Orcuttia inaequalis +
Orcuttia +
species +
membranous +
conspicuous +
plant +  and cespitose +
aquatic +  and terrestrial +
viscid-aromatic +
dioecious +, monoecious +  and synoecious +