Aegilops tauschii

Coss.
Common names: Tausch's goatgrass Rough-spiked hardgrass
Synonyms: Triticum tauschii
Treatment appears in FNA Volume 24. Treatment on page 262.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Culms 20-45 cm, geniculate at the base, usually forming many tillers. Sheaths with hyaline margins, margins of the lower cauline sheaths usually ciliate; blades 6-20 cm long, 3-6 mm wide. Spikes 5.5-8.2 cm long, 0.3-0.6 cm wide, narrowly cylindrical to slightly moniliform, with 6-13 spikelets; rudimentary spikelets absent; disarticulation in the rachises, the spikelets falling attached to the internodes above. Spikelets 7-8 mm long, 3-4 mm wide, cylindrical, scabrous, with 2-5 florets, the distal 2 florets sterile. Glumes 5-7 mm, coriaceous, scabrous, rims thickened, apices obtuse to truncate, minutely denticulate, unawned; lemmas 6-8 mm, mucronate or awned, awns usually solitary; lemmas of lower spikelets with shorter awns than those of the upper spikelets, the lower lemmas in a spikelet with shorter awns than those of the distal florets. Caryopses 5-6 mm, adhering to the lemmas and paleas. Haplome D. 2n = 14.

Discussion

Aegilops tauschii is a weed of disturbed areas. In the Flora region, it is known only from Riverside County, California; Cochise County, Arizona; and an old collection from Westchester County, New York. It is native from the Caucasus and southern shores of the Caspian Sea, eastward to Kazakhstan and western China, and southward to Iraq and northwestern India.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Aegilops tauschii"
membranous +  and scarious +
not penicillate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
indurate +
Sandra M. Saufferer +
1 (?) +  and 3 (?) +
basal +  and apical +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not evident +
linear +  and linear-lanceolate +
3mm;6mm +
spikelike +
hairy +  and glabrous +
Tausch's goatgrass +  and Rough-spiked hardgrass +
not branching +
geniculate +
20 cm200 mm <br />0.2 m <br /> (45 cm450 mm <br />0.45 m <br />) +
not woody +
N.Y. +, Ariz. +  and Calif. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
2 +  and 5 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
subtending +
pubescent +  and scabrous +
rounded +, ovate +  and rectangular +
unequal +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
coriaceous +
uncinate +
solid +  and hollow +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
mucronate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stiffly membranous +  and coriaceous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
5 (?) +  and 1 (?) +
concealed +  and prominent +
2 +  and 4 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
2-keeled +
subequal +
dry +  and fleshy +
spikelike +
5.5 cm55 mm <br />0.055 m <br /> (?) +  and 8.2 cm82 mm <br />0.082 m <br /> (?) +
narrowly cylindrical +  and slightly moniliform +
subsessile +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
6 +  and 13 +
cylindrical +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
3mm +  and 4mm +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Triticum tauschii +
Aegilops tauschii +
Aegilops +
species +
membranous +
aquatic +  and terrestrial +