Difference between revisions of "Festuca sororia"
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|common_names=Ravine fescue | |common_names=Ravine fescue | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
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name=Festuca sororia | name=Festuca sororia | ||
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|authority=Piper | |authority=Piper | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Colo.;N.Mex.;Utah;Calif.;Ariz.;Mo. | |distribution=Colo.;N.Mex.;Utah;Calif.;Ariz.;Mo. | ||
|reference=None | |reference=None | ||
|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_565.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Poeae | |tribe=Poaceae tribe Poeae | ||
Latest revision as of 17:24, 11 May 2021
Plants loosely cespitose, without rhizomes, with short extra-vaginal tillers. Culms 60-100 (150) cm, erect, glabrous; nodes usually exposed. Sheaths closed for less than 1/3 their length, glabrous or scabrous, shredding into fibers; ligules 0.3-1.5 mm; blades 3-6(10) mm wide, flat, lax, margins scabrous, abaxial and adaxial surfaces glabrous, adaxial surfaces sometimes scabrous, veins 13-25, ribs obscure; abaxial sclerenchyma in narrow strands; adaxial sclerenchyma developed; girders or pillars formed at the major veins. Inflorescences 10-20(40) cm, open or somewhat contracted, with 1-2(3) branches per node; branches lax, more or less spreading, spikelets borne towards the ends of the branches. Spikelets 7-12 mm, with (2)3-5 florets. Glumes lanceolate, scabrous at least on the midvein, acute to acuminate; lower glumes (1.5) 2.5-4(4.5) mm; upper glumes (3)4-6.5 mm; calluses wider than long, glabrous, smooth or slightly scabrous; lemmas (5)6-8(9) mm, lanceolate, scabrous or puberulent, acuminate, unawned or awned, awns to 2 mm; paleas about as long as or shorter than the lemmas, intercostal region puberulent distally; anthers 1.6-2.5 mm; ovary apices pubescent. 2n = unknown.
Distribution
Colo., N.Mex., Utah, Calif., Ariz., Mo.
Discussion
Festuca sororia grows in open woods and on shaded slopes and stream banks, at 2000-3000 m. It is re¬stricted to the United States, growing from central Utah and Colorado to Arizona and New Mexico. A single puzzling specimen is the basis for the reported occurrence of this species in Missouri (Yatskievych 1999).
Selected References
None.