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Arctagrostis
Family: Poaceae
Arctagrostis image
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Susan G. Aiken. Flora of North America
Plants perennial; rhizomatous. Culms 10-150 cm, erect, glabrous. Sheaths usually closed for up to 1/5 of their length; ligules membranous, obtuse, erose or lacerate; blades usually flat, glabrous, often scabrous. Inflorescences terminal panicles, loose and open to narrow and contracted; branches 0.5-14+ cm, scaberulous. Spikelets 3-6.5 mm, pedicellate, laterally compressed, with 1 (rarely 2) floret(s); rachillas hairy or scabrous, sometimes prolonged beyond the single floret or terminating in a well-formed or vestigial floret; disarticulation above the glumes. Glumes shorter than the lemmas, or the upper glumes equal to the lemmas, ovate to lanceolate, glabrous, sometimes scabridulous, 1-3-veined, acute to obtuse; calluses weakly developed, glabrous; lemmas scabrous or puberulent, 3-5-veined, lateral veins sometimes obscure, not reaching the apices, apices obtuse to acute, sometimes mucronate, unawned; paleas about as long as the lemmas, folded along 1 prominent vein, the second vein faint; lodicules 2, glabrous; ovaries glabrous; anthers 3. Caryopses 1.7-3 mm; hila 1/4-1/3 the length of the grain. x = 7. Name from the Greek arktos, north, a reference to the distribution of the genus, and Agrostis, from its similarity to that genus.
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Species within inventory project:
Arctagrostis angustifolia
Image of Arctagrostis angustifolia
Arctagrostis arundinacea
Image of Arctagrostis arundinacea
Arctagrostis latifolia
Image of Arctagrostis latifolia
Arctagrostis poaeoides
Image of Arctagrostis poaeoides
The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)