familyFabaceae
subfamilyFabaceae subfam. Faboideae
genusTrifolium
speciesTrifolium longipes
subspeciesTrifolium longipes subsp. caurinum
Trifolium longipes subsp. caurinum
Canad. J. Bot. 47: 104. 1969.
Common names: Beaked longstalk clover
Endemic
Basionym: Trifolium caurinum Piper Erythea 6: 29. 1898
Synonyms: T. covillei House
Treatment appears in FNA Volume 11.
Herbs 10–20 cm; rhizomatous; roots usually not thickened, if so, then crown of rhizomes above thickened portion. Inflorescences 28–32-flowered, ellipsoid, 3–3.2 cm diam. Pedicels (at least proximal, usually all) strongly reflexed in fruit, proximal more strongly reflexed than distal, stout, to 1 mm. Flowers 14–16 mm; calyx usually glabrous, rarely very sparsely hairy; corolla lavender, banner apex acute or acuminate. 2n = 48.
Phenology: Flowering May–Jun.
Habitat: Montane forests.
Elevation: 400–2300 m.
Discussion
Subspecies caurinum is found in central and western Washington, with populations in Oregon in the northeast and northwest, as well as in scattered sites elsewhere.
Selected References
None.
Lower Taxa
None.