Calystegia subacaulis
Calystegia subacaulis subsp. episcopalis
Hill morning glory, hillside false bindweed
Cambria morning glory, hillside false bindweed
moderately to sparsely hairy, hairs appressed, retrorse, or spreading.
sparsely hairy, hairs appressed.
ascending-decumbent, to 20–30 cm or almost absent.
ascending-decumbent, to 20–30 cm.
in basal rosettes or not;
blade rounded-deltate to triangular-hastate, 30–40 mm, base usually cuneate, sometimes lobed, lobes retrorse, 1-pointed or rounded, margins not or weakly undulate, apex acuminate, acute, rounded, or subacute.
not in basal rosettes;
blade apices acute.
immediately subtending sepals, lanceolate, oblong, or broadly ovate, 7–17 × 1.5–9 mm, shorter, or slightly longer, than sepals, proximally usually flat, sometimes keeled, apex usually rounded, sometimes acute.
1.5–4 mm wide, apex acute.
sepals 10–13 mm;
corolla white or cream, sometimes pink- to purplish-striped or -tinged, 33–62 mm.
Calystegia subacaulis
Calystegia subacaulis subsp. episcopalis
Subspecies 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies episcopalis intergrades with Calystegia atriplicifolia subsp. buttensis and C. collina subsp. venusta.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Herbage moderately to sparsely hairy, hairs retrorse to spreading; stems almost absent or to 2 cm; leaves in basal rosettes, blade apices usually rounded to acuminate, sometimes subacute; bracts (4–)6–9 mm wide. | subsp. subacaulis |
1. Herbage sparsely hairy, hairs appressed; stems ascending-decumbent, to 20–30 cm; leaves not in basal rosettes, blade apices acute; bracts 1.5–4 mm wide. | subsp. episcopalis |
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