Orcuttia viscida

(Hoover) Reeder
Common names: Sacramento orcuttgrass
Endemic
Treatment appears in FNA Volume 25. Treatment on page 291.
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Plants pilose, very viscid, strongly aromatic. Culms 3-10 (15) cm, simple, erect, often spreading in age. Leaves usually without a collar line; blades 2-4 mm wide. Spikes 3-5 cm, somewhat congested (less so than those of O. inaequalis); lower and upper internodes 3-7 mm. Spikelets with 6-20 (30) florets. Glumes subequal, 5-6 mm, unequally 3-toothed, teeth as long as the bodies, awn-tipped; lemmas 6-7 mm, teeth as long as the lemma bodies, central tooth evidently the longest, awns at least 1 mm; paleas at least 3/4 as long as the lemmas; anthers about 2 mm. Caryopses 2.3-2.5 mm, broadly elliptical; embryos about as long as the caryopses. 2n = 28.

Discussion

Orcuttia viscida grows at elevations below 120 m in Sacramento County, California. Its awn-tipped lemma teeth curve outward at maturity, giving the spikes a distinctive, bristly appearance. 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 viscida"
pinkish +  and white +
2 cm20 mm <br />0.02 m <br /> (?) +
John R. Reeder +
(Hoover) Reeder +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
1 cm10 mm <br />0.01 m <br /> (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
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 +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
dumbbell--shaped +
Sacramento orcuttgrass +
prostrate +  and decumbent +
spreading +  and erect +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
6 +  and 20 +
round +  and compressed +
shorter or longer +
subtending +
3-toothed +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
uncinate +
spicate +  and ebracteate +
paniculate +  and racemose +
clavate +  and capitate +
hollow +  and solid +
not absent +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
truncate +  and slightly emarginate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 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 /> (5 cm50 mm <br />0.05 m <br />) +
pedicellate +  and sessile +
1 +  and 60 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
filiform +  and elongate +
Gramineae +
Orcuttia viscida +
Orcuttia +
species +
membranous +
1/3 (?) +  and 1/2 (?) +
mucronate +
conspicuous +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +