Schismus arabicus

Nees
Common names: Arabian schismus
Introduced
Treatment appears in FNA Volume 25. Treatment on page 307.

Plants annual. Culms (2) 6-16 cm. Ligules 0.5-1.5 mm, of hairs; blades 4-6 cm long, 0.5-2 mm wide, abaxial surfaces glabrous or sparsely pubescent, adaxial surfaces sparsely to densely pubescent. Panicles (1) 2-3.5 cm. Spikelets 5-7 mm. Lower glumes 4.2-6.2 mm, equaling or exceeding the distal florets; upper glumes 4-6 mm; lemmas 1.8-2.6 mm, with dense, spreading pubescence between the veins, lobes longer than wide, acute to acuminate; paleas 1.5-2.2 mm, shorter than the lemmas; anthers 0.2-0.5 mm. Caryopses 0.5-0.8 mm. 2n = 12.

Distribution

Utah, Calif., Ariz., N.Mex., Nev.

Discussion

Schismus arabicus is native to southwestern Asia, but it is now established in the southwestern United States, growing in open and disturbed sites.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Schismus arabicus"
pubescent +  and glabrous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
notched +  and bifid +
Elizabeth A. Kellogg +
1 (?) +  and 3 (?) +
geniculate +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not pseudopetiolate +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
folded +  and flat +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spikelike +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Arabian schismus +
hollow +  and solid +
perennial +  and annual +
ascending +  and erect +
6 cm60 mm <br />0.06 m <br /> (16 cm160 mm <br />0.16 m <br />) +
woody +  and herbaceous +
Utah +, Calif. +, Ariz. +, N.Mex. +  and Nev. +
small +  and large +
capillary +
sometimes longer +
5 +  and 7 +
compressed +
subtending +
exceeded by the distal floret +  and exceeding +
subequal +
non-uncinate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spicate +  and ebracteate +
racemose +  and paniculate +
glabrous +  and pubescent +
solid +  and hollow +
with non-uncinate hairs +  and glabrous +
acute +  and acuminate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
firmly membranous +  and coriaceous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
pubescence +
longer than wide +
setaceous +
inconspicuous +
ciliate +  and glabrous +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.62 cm6.2 mm <br />0.0062 m <br />) +
exceeding the distal florets +  and equaling +
glabrous +  and pubescent +
extended +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +  and spatulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
membranous +
1 cm10 mm <br />0.01 m <br /> (?) +
1cm +  and 7cm +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
dry +  and fleshy +
Introduced +
sterile +, bisexual +  and unisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 +  and 3 +
2 (?) +  and 3 (?) +
Gramineae +
Schismus arabicus +
Schismus +
species +
membranous +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
pubescence +
longer than wide +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +