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Hickman's checkerbloom

Habit Plants 0.4–0.8 m, with taproot.
Stems

erect, proximally often brick red, otherwise greenish to grayish, canescent, hairs coarse, stellate.

Leaves

stipules linear-lanceolate, 7–9 × 1.5 mm;

petiole 2–3(–7) cm, 1/2–3 times as long as blade, shortest on distalmost leaves;

blade usually rounded to reniform with narrow sinus, or deeply cordate especially on largest proximal leaves, to flabelliform with wide-cuneate base in distal leaves, unlobed, rarely incised to 1/4 length, 2.5–7 × 2.5–7 cm, margins coarsely crenate, grayish canescent.

Inflorescences

dense, usually branched, 10–20 cm;

bracts distinct, linear to wide-lanceolate, often somewhat falcate, 2–5(–7) × 0.5–2 mm, much longer than pedicels, much shorter than calyx.

Pedicels

1–3 mm, usually obscured by bracts;

involucellar bractlets 3, 2–7 mm, shorter than calyx.

Flowers

bisexual;

calyx 8–10 mm, stellate-puberulent, hairs longest at margins;

petals pale lavender, sometimes lightly pale-veined, 16–17 mm;

staminal column 6–7 mm, hairy;

anthers white to pale yellow;

stigmas usually 6.

Seeds

1.5–2 mm.

Schizocarps

5–7 mm diam.;

mericarps usually 6, (1.5–)2–2.5 mm, smooth except for dorsal-medial line and several transverse corrugations especially at margins.

Sidalcea hickmanii subsp. hickmanii

Phenology Flowering May–Jul.
Habitat Chaparral
Elevation 300–1200 m (1000–3900 ft)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Subspecies hickmanii is recognized by its relatively large, usually unlobed leaves and linear bracts, relatively robust size, and dense inflorescences, as well as its restriction to the Santa Lucia Mountains, outer South Coast Ranges, Monterey County.

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

Source FNA vol. 6, p. 335.
Parent taxa Malvaceae > subfam. Malvoideae > Sidalcea > Sidalcea hickmanii
Sibling taxa
S. hickmanii subsp. anomala, S. hickmanii subsp. napensis, S. hickmanii subsp. parishii, S. hickmanii subsp. petraea, S. hickmanii subsp. pillsburiensis, S. hickmanii subsp. viridis
Name authority [C E]
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