Calystegia longipes
Ann. Missouri Bot. Gard. 52: 214. 1965.
Basionym: Convolvulus longipes S. Watson Amer. Naturalist 7: 302. 1873
Treatment appears in FNA Volume 14.
Subshrubs, rootstock woody. Herbage glabrous. Stems erect, sometimes intertwined. Leaves: blade usually linear to narrowly triangular, sometimes ovate, to 60 mm, base not lobed, or hastate-lobed and lobes ± linear, oblong, or triangular, 1-pointed. Bracts 5–20(–50) mm distant from sepals, lanceolate to linear, 3–17 × 0.2–3 mm, margins entire or lobed. Flowers: sepals oblong-ovate, 8–11 mm; corolla white or cream, sometimes pink-tinged, 28–36(–47) mm.
Phenology: Flowering Apr–Jul.
Habitat: Dry, rocky sites, desert scrub.
Elevation: 200–2500 m.
Distribution
Ariz., Calif., Nev., Utah, Mexico (Baja California).
Discussion
Intermediates between Calystegia longipes and C. macrostegia subsp. tenuifolia, and between C. longipes and C. peirsonii, occur in southern California.
Selected References
None.
Lower Taxa
None.