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Hill morning glory, hillside false bindweed

Habit Perennials, rhizomatous.
Herbage

moderately to sparsely hairy, hairs appressed, retrorse, or spreading.

Stems

ascending-decumbent, to 20–30 cm or almost absent.

Leaves

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.

Bracts

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.

Flowers

sepals 10–13 mm;

corolla white or cream, sometimes pink- to purplish-striped or -tinged, 33–62 mm.

Calystegia subacaulis

Distribution
from USDA
California
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
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
Source FNA vol. 14.
Parent taxa Convolvulaceae > Calystegia
Sibling taxa
C. atriplicifolia, C. catesbeiana, C. collina, C. felix, C. hederacea, C. longipes, C. macounii, C. macrostegia, C. malacophylla, C. occidentalis, C. peirsonii, C. pubescens, C. purpurata, C. sepium, C. silvatica, C. soldanella, C. spithamaea, C. stebbinsii, C. vanzuukiae
Subordinate taxa
C. subacaulis subsp. episcopalis, C. subacaulis subsp. subacaulis
Synonyms Convolvulus subacaulis
Name authority Hooker & Arnott: Bot. Beechey Voy. 363. (1839)
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