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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual. Stem: erect, 1--6, +- glabrous. Leaf: basal and cauline; ligule 2--5 mm, membranous, rounded at tip; blade flat. Inflorescence: panicle-like, open. Spikelet: 15--50 mm, laterally compressed, generally stalked, +- pendent; glumes unequal or +- equal, generally > florets, membranous, 3--11-veined, generally glabrous; axis occasionally prolonged behind upper floret, vestigial floret at tip; florets (1)2--6(8), 2+ bisexual, reduced florets distal to proximal ones, breaking above glumes and between florets or not; lemma hard, glabrous to hairy below awn, awned at or slightly below middle, 5--9-veined, tip 2-forked, forks +- tooth-like, awn stiff, generally bent, slightly to often strongly coiled below bend; palea +- < lemma; anthers 3. Fruit: cylindric, longitudinally grooved, pubescent.
Species In Genus: 29 species: temperate Europe, northern Africa, central Asia. Etymology: (Latin: oats) Note: Cult for grain, hay. California records of Avena strigosa Schreb. are based on misidentifications of Avena barbata. California records of Avena occidentalis Durieu, are based on a misidentification of Avena fatua.
eFlora Treatment Author: Bernard R. Baum, James P. Smith, Jr. & Dieter H. Wilken
Jepson Online Interchange
Key to AvenaPrevious taxon: Arundo donax
Next taxon: Avena barbata
Citation for this treatment: Bernard R. Baum, James P. Smith, Jr. & Dieter H. Wilken 2017. Avena, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10991, accessed on February 28, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 28, 2017.