Aegilops geniculata

Roth
Common names: Ovate goatgrass
Synonyms: Aegilops ovata
Treatment appears in FNA Volume 24. Treatment on page 265.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Culms 20-40 cm, geniculate at the base, usually with many tillers. Sheaths with hyaline margins, the distal portion of the lower cauline sheaths ciliate; blades 2-7.5 cm long, 2-5 mm wide. Spikes 1-3 cm long, bases 0.4-0.7 cm wide, narrowly ovoid to ellipsoid, gradually tapering distally, with (2) 3-4 spikelets, the distal spikelet sterile; rudimentary spikelets 1 (2); disarticulation at the base of the spikes, above the rudimentary spikelets. Fertile spikelets 7-10 mm long, 3-4 mm wide, urceolate; lower spikelet with 3-4 florets, the lower 1-2 florets fertile; apical spikelets 4-5 mm long, 1-2 mm wide, narrowly obovoid, with 1 floret, floret reduced, sterile. Glumes of fertile spikelets 6-10 mm, ovate, smooth, scabrous, appressed-velutinous, (3) 4 (5) -awned, awns 2-4.5 cm; glumes of apical spikelets about 3 mm, 4-awned, awns usually 1-3.5 cm; lemmas of fertile spikelets 6-8 mm, adaxial surfaces often velutinous distally, apices 2-3-awned, awns 1-2.5 cm. Caryopses 4-6 mm, falling free from the lemmas and paleas. Haplomes MU. 2n = 28.

Discussion

In the Flora region, Aegilops geniculata is known only from Mendocino County, California, where it usually occurs along roadsides. It is native from the Mediterranean area to central Asia. In California, it grows in silty clay.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Aegilops geniculata"
membranous +  and scarious +
not penicillate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Toothed (?) +, Awned (?) +  and Truncate (?) +
indurate +
Sandra M. Saufferer +
1 (?) +  and 3 (?) +
basal +  and apical +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
tapering +, narrowly ovoid +  and ellipsoid +
swelling +
0.4cm +  and 0.7cm +
2 cm20 mm <br />0.02 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
not evident +
linear +  and linear-lanceolate +
2mm;5mm +
spikelike +
hairy +  and glabrous +
Ovate goatgrass +
not branching +
geniculate +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
not woody +
N.Y. +, Calif. +  and Va. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
1 +, 3 +  and 4 +
sterile +  and fertile +
laterally compressed +  and terete +
reduced +
shorter than to longer than the adjacent florets +
subtending +
appressed-velutinous +
unequal +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
uncinate +
solid +  and hollow +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
rounded +
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 +
1 cm10 mm <br />0.01 m <br /> (?) +  and 3 cm30 mm <br />0.03 m <br /> (?) +
subsessile +  and sessile +
3 cm30 mm <br />0.03 m <br /> (?) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 +, 3 +  and 4 +
urceolate +
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 +
Aegilops ovata +
Aegilops geniculata +
Aegilops +
species +
membranous +
aquatic +  and terrestrial +