familyConvolvulaceae
genusCalystegia
speciesCalystegia collina
subspeciesCalystegia collina subsp. tridactylosa
Calystegia collina subsp. tridactylosa
Ann. Missouri Bot. Gard. 52: 215. 1965.
EndemicConservation concern
Basionym: Convolvulus tridactylosus Eastwood Proc. Calif. Acad. Sci., ser. 4, 20: 151. 1931
Treatment appears in FNA Volume 14.
Revision as of 21:38, 6 October 2024 by imported>Volume Importer
Stems to 50 cm, densely tomentose or ± villous, hairs brownish to grayish. Leaf blades notably 3-lobed, middle lobe oblong to broadly to narrowly triangular, lateral lobes usually antrorse, sometimes slightly retrorse or at right angles to middle lobe, margins not notably undulate, apex acute. Bracts lanceolate to linear-elliptic, 5–10 × 1.5–3.5 mm, apex acute. Flowers: sepals, at least outers, densely hairy, hairs appressed; corolla 27–33 mm.
Phenology: Flowering May–Jun.
Habitat: Chaparral, woodlands.
Elevation: 600–800 m.
Discussion
Subspecies tridactylosa may be a result of introgression between Calystegia collina and C. occidentalis subsp. occidentalis.
Selected References
None.
Lower Taxa
None.