Sidalcea asprella subsp. nana

(Jepson) S. R. Hill

Madroño 56: 105. 2009.

Common names: Dwarf harsh checkerbloom
Endemic
Basionym: Sidalcea reptans var. nana Jepson Fl. Calif. 2: 489. 1936
Synonyms: S. malviflora subsp. nana (Jepson) C. L. Hitchcock
Treatment appears in FNA Volume 6. Treatment on page 326. Mentioned on page 325.

Plants 0.1–0.3 (–0.4) m, with caudex or not, with rhizomes freely rooting, 5–20 cm × 2 (–3) mm. Stems decumbent-ascending to erect, sometimes proximally prostrate, rooting, not brittle, densely, harshly stellate-puberulent to glabrate, hairs 0.1–0.5 (–0.7) mm, usually less dense distally. Leaves mostly basal, cauline 1–3+, gradually reduced distally; petioles of proximal leaves 5–10 cm, 1–4 times as long as blade, those of distal leaves 1/2 times to as long as blade; blades: basal usually palmately 7-lobed, or deeply crenate, 2.2–2.7 (–4) × 2–2.3 (–4) cm, base cordate or sinus wide to narrow, apex rounded, cauline deeply 3–7-lobed, 1.5–3 cm, lobes usually apically 3-toothed or distalmost entire, surfaces hairy, more densely stellate-puberulent adaxially, hairs usually 2–4-rayed (simple), bristly. Inflorescences ascending, usually unbranched, subscapose, usually 1-sided, pistillate usually 9–14-flowered, bisexual 2–9 (–19) -flowered; bracts linear to lanceolate, stipulelike, 2–2.5 (–4) mm, shorter than to as long as pedicel. Pedicels 3–4 mm. Flowers: calyx 5–7 (–12) mm; petals pink, pistillate 9–11 mm, bisexual 15–20 (–28) mm; stigmas 7 or 8. Schizocarps 7–8 mm diam.; mericarps 7 or 8, 4 mm, reticulate-rugose-veined, sides and back pitted, mucro 1 mm, with few minute bristles. Seeds 2.8 mm.


Phenology: Flowering Jun–Aug(–Sep).
Habitat: Open woodlands, grassy margins, yellow pine-Douglas fir forests, usually serpentine
Elevation: 400–1900 m

Discussion

Subspecies nana has been confused with subsp. asprella, Sidalcea celata, S. elegans, and S. glaucescens and has been placed within S. malviflora. The type specimen (Jepson 14061) has small individuals with only two or three flowers and long rhizomes, and it does superficially resemble S. reptans, as Jepson suggested, but more robust individuals have more flowers and clearly show vegetative and reproductive similarity to subsp. asprella.

Subspecies nana occurs from California in the northern Sierra Nevada to southwestern Oregon.

Selected References

None.

Lower Taxa

None.

"narrowest" is not a number."longest" is not a number.No values specified.

rounded +
Steven R. Hill +
(Jepson) S. R. Hill +
2.7 cm27 mm <br />0.027 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2.3 cm23 mm <br />0.023 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
crenate +  and 7-lobed +
2 cm20 mm <br />0.02 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
cordate +
Sidalcea reptans var. nana +
asymmetric +  and symmetric +
dissected +, lobed +  and unlobed +
3-7-lobed +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
stipule-like +, linear +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
2-15(-30)-flowered +, branched +  and unbranched +
not overlapping +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
stellate-puberulent +
elongate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
indehiscent +  and loculicidal +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Dwarf harsh checkerbloom +
Calif. +  and Oreg. +
400–1900 m +
sparse;copious +
unisexual +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Open woodlands, grassy margins, yellow pine-Douglas fir forests, usually serpentine +
both +  and simple +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
larger +  and minute +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
2-9(-19)-flowered +, 9-14-flowered +, pistillate +, subscapose +  and unbranched +
axillary +  and terminal +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
1/2 times to as long as blade +  and 1-4 times as long as blade +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3-toothed +
toothed;crenate +
reticulate-rugose-veined +
wedge--shaped +
4 cm40 mm <br />0.04 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
3-40-carpellate +
(1-)2-many +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
adnate +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1-4 times longer +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering Jun–Aug(–Sep). +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (?) +  and 30 cm300 mm <br />0.3 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
7mm +  and 8mm +
hairy +  and glabrous +
reniform +
2.8 cm28 mm <br />0.028 m <br /> (?) +
persistent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
wide +  and narrow +
sessile +  and subsessile +
stellate-puberulent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not brittle +
decumbent-ascending;erect +
harshly stellate-puberulent +  and glabrate +
8 +  and 7 +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
linear +  and lanceolate +
1.1 cm11 mm <br />0.011 m <br /> (?) +
unbranched +  and branched +
stellate-puberulent +  and hairy +
S. malviflora subsp. nana +
Sidalcea asprella subsp. nana +
Sidalcea asprella +
subspecies +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +