Festuca roemeri |
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Oregon fescue, Roemer's fescue |
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Habit | Plants densely cespitose, without rhizomes. |
Culms | (35)50-90 (100) cm, erect, glabrous, smooth. |
Sheaths | closed for less than 1/2 their length, glabrous, hirsute, or scabrous, persistent; collars glabrous; ligules 0.1-0.5 mm; blades 0.5-1(1.2) mm in diameter, conduplicate, abaxial surfaces glabrous or puberulent, adaxial surfaces sometimes scabrous, glabrous or pubescent, veins (5)7-9, ribs 5-9, well defined; abaxial sclerenchyma in 5-7 wide strands, sometimes confluent into a single band; adaxial sclerenchyma absent. |
Inflorescences | (7)8-20(25) cm, loosely to densely contracted, with 1-2 branches per node; branches erect to slightly spreading, lower branches with 2+ spikelets. |
Spikelets | 9-13.5 mm, with 4-6 florets. |
Glumes | exceeded by the upper florets, ovate-lanceolate, smooth or scabrous distally; lower glumes (2)2.5-5 mm; upper glumes 4-6.2 mm; lemmas 5-7(8.2) mm, scabrous near the apices, awns (2)3-5 mm, terminal, usually more than 1/2 as long as the lemma bodies; paleas about as long as the lemmas, intercostal region scabrous or puberulent distally; anthers (2.6)2.8-3.6(4) mm; ovary apices glabrous. |
2n | = unknown. |
Festuca roemeri |
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Distribution | |
Discussion | Festuca roemeri grows in grasslands and open forests, primarily west of the Cascade Mountains, from southeastern Vancouver Island southward to northwestern California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 440. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Poeae > Festuca > subg. Festuca > sect. Festuca |
Sibling taxa | |
Synonyms | F. idahoensis var. roemeri |
Name authority | (Pavlick) E.B. Alexeev |
Web links |
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