Sidalcea malviflora subsp. dolosa

C. L. Hitchcock

Perenn. Sp. Sidalcea, 36. 1957.

Common names: Bear Valley checkerbloom
Endemic
Treatment appears in FNA Volume 6. Treatment on page 343. Mentioned on page 341.

Plants 0.2–0.6 (–1) m, with rhizomes widespreading, slender, usually 10+ cm, freely rooting, sometimes matted. Stems erect, base decumbent, rooting, sometimes reddish tinted distally, usually long-hirsute, sometimes glabrous, hairs simple, 2 mm, slender, soft. Leaves basal and cauline; proximalmost stipules wide-lanceolate to ovate, 4–5 × 2–3 mm; proximal petiole 5–20 (–30) cm, 3–4 times as long as blade, greatly reduced distally to 1/2–1 times as long as blade; blade (2–) 4–8 (–12) cm wide, basal cordate-rounded, unlobed or shallowly lobed, margins coarsely crenate, distal deeply palmately 5–9-lobed, lobes usually 3-toothed to 3-lobed, surfaces coarsely, sparsely stellate-hairy abaxially, hirsute and stellate-puberulent adaxially, distalmost not much reduced, palmately 5–7-divided nearly to base, lobe margins entire. Inflorescences open and elongate or dense when young, 5–14 (–21) -flowered, 15–20 cm, calyces overlapping or not, several flowers often open at same time; bracts linear, divided nearly to base, (2–) 5–7 (–9) mm, distal undivided or 2-fid, usually equaling or longer than pedicels, much shorter than calyx. Pedicels 1–4 (–6) mm. Flowers: calyx 6.5–10 (–12) mm, sparsely stellate-puberulent and hirsute-bristly on margins, longest hairs simple; petals rose-pink to purplish, pale-veined, usually with pale to white base, 20 mm, pistillate darker and smaller; staminal column 5–6 mm; anthers white to pale-pink; stigmas (6 or) 7–9. Schizocarps 5–6 mm diam.; mericarps (6 or) 7–9, 3 mm, back glabrous or sparingly glandularpuberulent, slightly reticulate-veined and wrinkled, ridged, back less so, mucro 1 mm. Seeds 2 mm.


Phenology: Flowering Jun–Jul(–Aug).
Habitat: Open pine forests, grassy areas
Elevation: 1500–2300(–2700) m

Discussion

According to DNA evidence, subsp. dolosa may not belong within Sidalcea malviflora. Its range matches that of S. pedata, and it also appears to be rare. It is found in the San Bernardino Mountains. It somewhat resembles S. neomexicana, but rhizomelike stems are present, the fruit is rougher, and the stem is more leafy; it strongly resembles and may be a close relative of S. reptans. It is threatened by development.

Selected References

None.

Lower Taxa

None.
60 +, 40 +  and 20 +
white +  and pale-pink +
Steven R. Hill +
C. L. Hitchcock +
pale +  and white +
glabrous +  and long-hirsute +
cordate +
Sida malviflora +
lobed +, unlobed +  and cordate-rounded +
4cm;8cm +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
divided +
pistillate +  and pale-veined +
not +  and overlapping +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
bright pink +  and lavender or dark rose-purple +
hirsute-bristly +  and stellate-puberulent +
0.65 cm6.5 mm <br />0.0065 m <br /> (1 cm10 mm <br />0.01 m <br />) +
indehiscent +  and loculicidal +
Bear Valley checkerbloom +
2-fid;undivided +
sparsely hairy;glabrate +
1500–2300(–2700) m +
sparse;copious +
pistillate +  and staminate +
unisexual +  and bisexual +
Open pine forests, grassy areas +
forked +  and stellate +
slender +
2 cm20 mm <br />0.02 m <br /> (?) +
5-14(-21)-flowered +  and open +
ascending +  and erect +
axillary +  and terminal +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0-1/2-2 times as long as blade +  and 3-9 times as long as blades +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
cauline +  and basal +
usually 3-toothed +  and 3-lobed +
reticulate-veined +
sparingly +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
5-9-lobed +  and unlobed +
1 cm10 mm <br />0.01 m <br /> (?) +
3-40-carpellate +
(1-)2-many +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pistillate +  and pale-veined +
adnate +  and distinct +
smaller +
20 cm200 mm <br />0.2 m <br /> (?) +
Flowering Jun–Jul(–Aug). +
20 cm200 mm <br />0.2 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0-1/2-1 times as long as blade +  and 3-4 times as long as blade +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lobed +, unlobed +, reniform +  and orbiculate +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Perenn. Sp. Sidalcea, +
elongated +
widespreading +
not cordlike +
5mm +  and 6mm +
hairy +  and glabrous +
reniform +
persistent +
reticulate-veined +
honeycomb-pitted +
sessile +  and subsessile +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
solid +, branched +, unbranched +  and rooting +
scattered +  and clustered +
7 +  and 9 +
filiform +, linear +  and capitate +
1-2 times number of carpels +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
purplish +  and green +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
hairy +  and ciliate +
0.1 cm1 mm <br />0.001 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
unbranched +  and branched +
stellate-puberulent +, hirsute +  and stellate-hairy +
5-7-divided +
Nuttallia malviflora +
Sidalcea malviflora subsp. dolosa +
Sidalcea malviflora +
subspecies +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
plant +  and matted +
monoecious +, dioecious +  and hermaphroditic +