Eremopyrum bonaepartis

(Spreng.) Nevski
Synonyms: Agropyron squarrosum unknown
Treatment appears in FNA Volume 24. Treatment on page 254.
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Illustrator: Cindy Roché
Culms to 30 cm, smooth, mostly glabrous, puberulent below the spikes. Blades 3-5 mm wide, scabrous distally. Spikes 1.4-4.5 cm long, 1.3-2.8 cm wide, oblong, obtuse, or truncate; disarticulation at the rachis nodes. Spikelets 10-25 mm, with 3-5 florets. Glumes 4-19 mm, scabrous or hairy, 3-5-veined, 1-keeled, lateral veins obscure, bases straight; lemmas 6-24 mm, glabrous, scabrous, or hirsute, all alike in their pubescence, apices subacute to shortly awned; palea keels prolonged into 2 toothlike appendages. 2n = 14, 28.

Discussion

In the Flora region, Eremopyrum bonaepartis is known only from a few collections in Arizona. Several infraspecific taxa have been recognized in Eurasia: subsp. bonaepartis has glabrous lemmas and glumes; specimens with pilose, hirsute, or fairly scabrous lemmas and glumes have been referred to as subsp. hirsutum (Bertol.) Melderis or subsp. sublanuginosum (Drobow) Á. Löve ; and those with awned lemmas have been called subsp. turkestanicum (Gand.) Tzvelev. No attempt has been made to determine which are present in the Flora region.

References

None.

Lower Taxa

No lower taxa listed.