familyConvolvulaceae
genusCalystegia
speciesCalystegia macrostegia
subspeciesCalystegia macrostegia subsp. intermedia
Calystegia macrostegia subsp. intermedia
Ann. Missouri Bot. Gard. 52: 214. 1965.
Basionym: Convolvulus aridus subsp. intermedius Abrams Contr. Dudley Herb. 3: 357. 1946
Synonyms: Calystegia macrostegia subsp. longiloba (Abrams) Brummitt Convolvulus aridus subsp. longilobus Abrams
Treatment appears in FNA Volume 14.
Herbage glabrous or puberulent, usually glabrescent. Stems trailing or twining-climbing, to 300 cm. Leaf blades broadly to narrowly triangular, (7–)12–20(–30) mm wide excluding lobes, lobes 2-pointed or rounded, basal sinus usually acute to rounded, sometimes ± quadrate. Bracts lanceolate, (10–)13–20 × 6–10(–12) mm, proximally flat or ±keeled, apex acute. Flowers: sepals (9–)11–14(–16) mm; corolla (24–)27–40 mm; stamens (15–)17–21 mm.
Phenology: Flowering Mar–Aug.
Habitat: Dry, stony hillsides.
Elevation: 0–600(–1100) m.
Distribution
Calif., Mexico (Baja California).
Discussion
Subspecies intermedia intergrades with subsp. macrostegia.
Selected References
None.
Lower Taxa
None.