Avena hybrida

Peterm.
Synonyms: Avena fatua var. vilis
Treatment appears in FNA Volume 24. Treatment on page 737.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual. Culms erect; nodes often pubescent. Sheaths glabrous; ligules 4-5 mm, obtuse or acute; blades 12-25 cm long, 7-12 mm wide. Panicles 15-30 cm, equilateral, sometimes slightly secund. Spikelets 15-24 mm, with 2-4 florets; disarticulation beneath each floret; disarticulation scars of the lower floret (s) in a spikelet oval to round, those of the third and fourth (and sometimes the second) florets heart-shaped. Glumes equal, 15-23 mm, 7-9 (11) -veined; calluses bearded; lemmas about 21 mm, usually glabrous, sometimes pubescent beneath the awn insertion, irregularly bidenticulate to bisubulate, veins not extending beyond the apices, awns about 30 mm, arising at midlength; lodicules with a small side lobe; anthers about 2 mm. 2n = 42.

Discussion

Avena hybrida is native to western and central Asia; it grows as a weed in Europe. It has been reported from Essex County, Massachusetts, and Prince Edward Island.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Avena hybrida"
membranous +  and scarious +
2 cm20 mm <br />0.02 m <br /> (?) +
awned +, biaristate +, dentate +  and bifid +
Bernard R. Baum +
Peterm. +
1 (?) +  and 3 (?) +
straight +
once-geniculate +
30 cm300 mm <br />0.3 m <br /> (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
12 cm120 mm <br />0.12 m <br /> (25 cm250 mm <br />0.25 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
7mm;12mm +
spikelike +
rounded +  and pointed +
not branching +
8 cm80 mm <br />0.08 m <br /> (200 cm2,000 mm <br />2 m <br />) +
not woody +
Mass. +  and P.E.I. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
2 +  and 4 +
sterile +  and bisexual +
compressed +
reduced +
7-9(11)-veined +
shorter or longer +
subtending +
unequal +
1.5 cm15 mm <br />0.015 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
membranous +
uncinate +
pubescent +  and glabrous +
lanceolate +  and ovate +
21 cm210 mm <br />0.21 m <br /> (?) +
acute +  and obtuse +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
inconspicuous +
not toothed +  and toothed +
concealed +  and prominent +
2 +  and 1 +
entire +  and bifid +
well-developed +
2-keeled +
spikelike +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
dry +  and fleshy +
not disarticulating +
not prolonged +
heart--shaped +
15 +  and 50 +
oval +  and round +
1.5 cm15 mm <br />0.015 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Avena fatua var. vilis +
Avena hybrida +
species +
membranous +
parallel +  and converging +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +