Sidalcea covillei |
Sidalcea glaucescens |
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Owens Valley checkerbloom, Owens Valley sidalcea |
glaucous checker mallow, waxy checker mallow, waxy checkerbloom |
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Habit | Herbs, perennial, 0.2–0.6 m, often glaucous, with fleshy, simple to clustered roots, without caudex or rhizomes. | Herbs, perennial, 0.2–0.5(–0.7) m, glaucous, with taproot and caudex, without rhizomes. |
Stems | several, clustered, erect, solid, often glaucous proximally, base sparsely, finely to coarsely stellate-hairy or hispid, hairs smaller distally. |
usually few to many, clustered, sprawling or decumbent to ascending, rarely erect, not rooting, solid, glaucous, proximally usually stellate-puberulent, sometimes glabrous, distally glabrous. |
Leaves | 2–5 per stem, mostly basal; stipules linear-lanceolate, 3–6 × 1 mm; petiole (4–)5–10 cm, reduced on cauline leaves, proximal 1–4 times as long as blade, distal 1/2 times to as long as blade; blade fleshy, glaucous, rather densely stellate-hairy, proximalmost usually shallowly to deeply, ternately, palmately 5–7-lobed, 1.5–3 × 1.5–4 cm, lobes obovate, margins crenate-dentate, distal deeply 3–7-lobed, lobes linear, distalmost 2–4 cm wide. |
basal and cauline, basal leaves 9 or fewer or deciduous; stipules lanceolate, (2–)3–5(–6) × 0.5–1.5 mm; petioles of basal and proximal cauline leaves 6–14 cm, 3–4 times as long as blades, reduced distally to 1/2 times to as long as blades; blade reniform-orbiculate, palmately 5(–7)-lobed, deeply incised, 2–6(–8) × 2–6(–8) cm, glaucous, surfaces glabrous or minutely stellate-puberulent, lobes shallowly dentate, more deeply divided on distal leaves, margins entire, distalmost sometimes linear, unlobed. |
Inflorescences | erect, open, calyces not conspicuously overlapping except sometimes in bud, branched or unbranched, nearly scapose, often 20+-flowered, slender, elongate, 1-sided or not, 6–30 cm; bracts inconspicuous, linear, 2-fid, 2–4 mm, shorter than calyx and pedicels. |
ascending, open, calyces not conspicuously overlapping except sometimes in bud, usually unbranched, 3–10(–20)-flowered, elongate, 1-sided, 8–20 cm, axis curved between flowers, sometimes zigzag in appearance; bracts linear to lanceolate, distinct or connate and 2-fid, 5 mm, proximal divided to base, distal often undivided, shorter than to equaling pedicels. |
Pedicels | 2–8(–10) mm; involucellar bractlets absent. |
2–3(–10) mm; involucellar bractlets absent. |
Flowers | bisexual; calyx 5–8 mm, uniformly, densely stellate-puberulent or few with longer rays; petals pale pink-lavender, veins paler, 10–15 mm; staminal column 4–5 mm, hairy; anthers white; stigmas 5 or 6. |
bisexual or unisexual and pistillate, plants gynodioecious; calyx 5–10 mm, enlarging in fruit, hairy, hairs scattered, minute, stellate and sometimes capitate, glandular; petals pink to pink-purple, pale-veined at least when dry, pistillate (7–)9–12 mm, bisexual 15–20(–25) mm; staminal column 4–7 mm, stellate-hairy; anthers pale yellow or pinkish to white; stigmas 6–8. |
Seeds | 1 mm. |
2 mm. |
Schizocarps | 5 mm diam.; mericarps 5 or 6, 2.5 mm, sparsely glandular-puberulent, roughened, back reticulate-veined, sides strongly so, not pitted, mucro 0.1–0.3 mm. |
5–7 mm diam.; mericarps 6–8, 3–3.5 mm, roughened, sides reticulate-veined and deeply pitted, back reticulate-veined and glandular-puberulent, mucro 0.3–1 mm. |
2n | = 20. |
= 40. |
Sidalcea covillei |
Sidalcea glaucescens |
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Phenology | Flowering (Apr–)May–Jun. | Flowering (May–)Jun–Aug(–Sep). |
Habitat | Alkaline flats, springs, meadows | Dry, grassy meadows, open, usually red fir, juniper, or ponderosa pine forests, often serpentine |
Elevation | 1100–1400 m (3600–4600 ft) | (900–)1500–3000 m ((3000–)4900–9800 ft) |
Distribution |
CA |
CA; NV
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Discussion | Sidalcea covillei is one of two species of Sidalcea (along with S. neomexicana) with fleshy roots and adapted to alkaline conditions on flats. Its range (Owens Valley in Inyo County) and specialized habitat have made it vulnerable to any lowering of the water table and to grazing; it is listed as endangered in California. Most individuals of it were destroyed by construction of the Haiwee Reservoir. Once thought to have been extirpated, it was subsequently rediscovered. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sidalcea glaucescens is a relatively common, generally low-growing plant of relatively high elevations; it occurs from the central and northern Sierra Nevada to the southern Cascade and Klamath ranges and to north of Reno, Nevada. It usually can be distinguished by its highly glaucous, waxy stems and leaves, 3–5-lobed, entire-margined leaves, and basal leaves that wither by the time fruit is mature; additionally, proximal flowers are spaced several centimeters apart and leafy-bracted, and the inflorescence axis is curved between flowers. It has been confused with S. asprella, S. elegans, and S. multifida, to which it appears to be closely related. It can generally be distinguished from S. multifida by its 5(–7)-lobed leaves, the lobes shallowly incised or entire, its nonpersisting, fewer basal leaves, and its more-procumbent habit. Sidalcea elegans and S. virgata in southwestern Oregon also have been confused with S. glaucescens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 329. | FNA vol. 6, p. 333. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. neomexicana var. covillei | S. montana |
Name authority | Greene: Cybele Columb. 1: 35. (1914) | Greene: Bull. Calif. Acad. Sci. 1: 77. (1885) |
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