Difference between revisions of "Calystegia peirsonii"
Ann. Missouri Bot. Gard. 52: 214. 1965.
Endemic
Basionym: Convolvulus peirsonii Abrams in L. Abrams and R. S. Ferris Ill. Fl. Pacific States 3: 387, fig. 3866. 1951
Treatment appears in FNA Volume 14.
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|genus=Calystegia | |genus=Calystegia | ||
|species=Calystegia peirsonii | |species=Calystegia peirsonii | ||
Latest revision as of 13:15, 24 November 2024
Perennials, rhizomatous. Herbage glabrous, sometimes glaucous. Stems decumbent, procumbent, or ± twining-climbing, 15–40 cm. Leaves: blade narrowly triangular-hastate, to 20 mm, base lobed, lobes ± oblong to rhombic, 1-pointed, basal sinus quadrate to rounded. Bracts immediately subtending, or to 3 mm distant from, sepals, elliptic to broadly elliptic-oblong, 3–7 × 2.5–4 mm, margins entire. Flowers: sepals 9–13 mm; corolla white, 25–40 mm.
Phenology: Flowering May–Jun.
Habitat: Chaparral, desert scrub, dry, rocky, gravelly slopes.
Elevation: 300–1600 m.
Discussion
Calystegia peirsonii intergrades with C. longipes and C. macrostegia subspp. cyclostegia and intermedia.
Selected References
None.
Lower Taxa
None.