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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: Festuca||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Festuca rubra L.
Habit: Perennial herb, rhizomes generally present, sometimes very short. Stem: 3--8 dm, +- clumped, decumbent at base; nodes visible. Leaf: sheath closed, +- red, shredding with age, hairs +- downward-pointing; ligule < 0.5 mm; blade 5--30 cm, < 3 mm wide, +- folded. Inflorescence: 5--20 cm, +- open; branches +- ascending. Spikelet: 9--12 mm; lower glume 2.5--3.5 mm, upper 3.5--5.5 mm; florets 3--10; lemma 5--7 mm, sometimes scabrous near tip, awn < 4 mm, scabrous; anthers 2.5--4 mm; ovary tip glabrous. Chromosomes: 2n=14,28,42,56,70,128.
Ecology: Sand dunes, grassland, subalpine forest; Elevation: generally < 2500 m. Bioregional Distribution: NW, CaR, n&c SN, CW, TR, W&I; Distribution Outside California: worldwide. Flowering Time: May--Jul Note: Distinct forms occur in NCo. If recognized taxonomically: loosely cespitose plants with awnless to acute lemmas on coastal sands assignable to Festuca rubra subsp. arenicola E.B. Alexeev [Festuca ammobia Pavlick; Festuca rubra subsp. densiuscula Piper]; loosely cespitose, obscurely rhizomed plants with acuminate or awned lemmas, in rocks, pebbles, or sand from the upper littoral zone to ocean bluffs and cliffs assignable to Festuca rubra subsp. pruinosa (Hack.) Piper. Plants assignable to Festuca rubra subsp. fallax (Thuill.) Nyman reported from California but records lacking.
Unabridged Note: 12+ subsp. of Festuca rubra are reported for North America. They represent a heterogeneous assemblage of native and introduced Eurasian cultivars that have hybridized and backcrossed with one another. Some of the named taxa may be extremes in variation. Their taxonomy remains unsettled.
eFlora Treatment Author: James P. Smith, Jr. & Susan G. Aiken
Jepson Online Interchange
Previous taxon: Festuca pratensis
Next taxon: Festuca saximontana
Citation for this treatment: James P. Smith, Jr. & Susan G. Aiken 2016. Festuca rubra, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=25825, accessed on May 31, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 31, 2016.