Sidalcea hickmanii subsp. anomala

C. L. Hitchcock

Perenn. Sp. Sidalcea, 79. 1957.

Common names: Cuesta Pass checkerbloom
Conservation concernEndemic
Treatment appears in FNA Volume 6. Treatment on page 336. Mentioned on page 335.

Plants often mound-forming, 0.3–0.6 m, with taproot. Stems usually crowded in older plants, erect to ascending, usually reddish, grayish stellate-hairy, hairs coarse, longest 1.5 mm. Leaves: stipules wide-lanceolate to ovate, 6–8 × 2.5–3 mm; petiole 3–6 cm, 1–3 times as long as blade; blades on proximal portion of stem rounded, those distally with wide sinus, deeply, palmately (3–) 5–7-lobed, incised ± to base, 2–6 × 2–6 cm, narrowed to base, margins crenate-dentate, surfaces coarsely stellate-hairy. Inflorescences open, usually branched, 10–20 cm; bracts distinct, ovatelanceolate to ovate, (7–) 10–12 mm, 3–4 times longer than pedicels, equaling or shorter than calyx. Pedicels 1–4 mm, obscured by bracts; involucellar bractlets 3, 8–10 mm, ± equaling calyx. Flowers bisexual or pistillate, plants gynodioecious; calyx 10–12 mm, densely long-bristly; petals pinkish lavender, veins often paler, 12–15 mm; staminal column 6–7 mm, hairy; anthers white to pale pinkish; stigmas usually 6. Schizocarps 5–6 mm diam.; mericarps usually 6, (1.5–) 2–2.5 mm, smooth except for dorsal-medial line and several transverse corrugations especially at margins. Seeds 1.5–2 mm.


Phenology: Flowering Apr–May(–Jun).
Habitat: Closed-cone conifer forests and chaparral, usually serpentine
Elevation: 600–800 m

Discussion

Of conservation concern.

Subspecies anomala is known from the vicinity of Cuesta Pass, outer South Coast Ranges, San Luis Obispo County, and is distinctive in its hemispheric-mounding habit, deeply palmately lobed leaves, and relatively large bracts that equal the calyx in length. It is listed as endangered in California and is occasionally cultivated.

Subspecies anomala is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
white +  and pale pinkish +
Steven R. Hill +
C. L. Hitchcock +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
cordate +, truncate +  and ovate +
widest;1mm;3mm +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
narrowed +, incised +  and (3-)5-7-lobed +
2cm;6cm +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
distinct +
3-4 times longer than pedicels +
proximalmost +
ovatelanceolate +  and ovate +
slightly longer +
shorter to slightly +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2-20+-flowered +, unbranched +  and branched +
not +  and overlapping +
long-bristly +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
indehiscent +  and loculicidal +
Cuesta Pass checkerbloom +
600–800 m +
sparse;copious +
Closed-cone conifer forests and chaparral, usually serpentine +
both +  and simple +
longest +
1.5 cm15 mm <br />0.015 m <br /> (?) +
branched +  and open +
ascending +  and erect +
axillary +  and terminal +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
reticulate-veined +
1cm +  and 7cm +
not pitted +  and corrugated +
coarsely crenate;shallowly or deeply lobed +
thin +, usually wider than long +, 1cm +  and 7cm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
wedge--shaped +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
3-40-carpellate +
(1-)2-many +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
adnate +  and distinct +
3 cm30 mm <br />0.03 m <br /> (9 cm90 mm <br />0.09 m <br />) +
1-3 times as long as blade +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering Apr–May(–Jun). +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3 cm30 mm <br />0.03 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Perenn. Sp. Sidalcea, +
elongated +
5mm +  and 6mm +
hairy +  and glabrous +
reniform +
1.5mm +  and 2mm +
persistent +
Conservation concern +  and Endemic +
sessile +  and subsessile +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
solid +, unbranched +  and branched +
grayish +  and reddish +
erect;ascending +
several;many +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
unbranched +  and branched +
stellate-hairy +
Hesperalcea +
Sidalcea hickmanii subsp. anomala +
Sidalcea hickmanii +
subspecies +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
plant +  and mound-forming +