Draba californica

(Jepson) Rollins & R. A. Price

Aliso 12: 19. 1988.

Endemic
Basionym: Draba cuneifolia var. californica Jepson Man. Fl. Pl. Calif., 443. 1925
Treatment appears in FNA Volume 7. Treatment on page 298. Mentioned on page 275, 277, 283.

Perennials; (short-lived); caudex simple or branched; sometimes scapose. Stems unbranched or branched (few), (0.2–) 0.4–0.9 (–1.2) dm, pubescent throughout, trichomes stellate, 4–8-rayed, 0.05–0.5 mm. Basal leaves rosulate; shortly petiolate; petiole ciliate, margin not ciliate, (trichomes simple and 2-rayed, 0.3–1 mm); blade oblanceolate, 0.6–2 cm × 1.5–4 (–6) mm, margins entire, surfaces pubescent with short-stalked, 4–8-rayed trichomes, 0.1–0.4 mm. Cauline leaves 0–3; sessile; blade ovate to oblong, margins entire, surfaces pubescent as basal. Racemes 3–13-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels ascending to divaricate-ascending, straight, (2–) 4–9 (–12) mm, pubescent, trichomes short-stalked, 4–8-rayed, (0.1–0.4 mm). Flowers: sepals (persistent until fruit maturity), oblong to ovate, 1.7–2.5 mm, pubescent, (trichomes short-stalked, 2–5-rayed); petals white or creamy white, spatulate to oblanceolate, 2.2–3 × 0.8–1 mm; anthers ovate, 0.2–0.35 mm. Fruits lanceolate to oblong, plane, slightly flattened, (5–) 6–9 (–11) × 1.8–2.5 mm; valves usually pubescent, rarely glabrous, trichomes simple and short-stalked, 2-rayed or 3-rayed, 0.05–0.25 mm; ovules 22–32 per ovary; style 0.1–0.3 (–0.4) mm. Seeds oblong, 0.8–1 × 0.5–0.6 mm.


Phenology: Flowering Jun–Aug.
Habitat: Grassy meadows, alpine areas, fellfields
Elevation: 3200-4000 m

Discussion

Although originally treated as a variety of Draba cuneifolia, D. californica is but distantly related to that species. Instead, ongoing studies (L. Allphin and M. D. Windham, unpubl.) suggest that it may be an allopolyploid resulting from hybridization between D. albertina and D. breweri. The species is restricted to the White Mountains in Mono County, California, and adjacent Esmeralda County, Nevada.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Draba californica"
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.035 cm0.35 mm <br />3.5e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
(Jepson) Rollins & R. A. Price +
Draba cuneifolia var. californica +
appendaged +  and unappendaged +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not +  and auriculate +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lobed +, toothed +  and entire +
ovate;oblong +
much smaller +  and reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
urceolate +, campanulate +  and tubular +
scapose +, branched +  and simple +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
Calif. +  and Nev. +
3200-4000 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
not basally +  and dilated +
actinomorphic +
orange;purple;orange;purple;pink;white;yellow +
spreading +, ascending +  and erect +
oblong +  and ovate +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
latiseptate +, twisted +  and sessile +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
indehiscent +  and dehiscent +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
flattened +, plane +, lanceolate +  and oblong +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Grassy meadows, alpine areas, fellfields +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
creamy white +  and white +
2.2mm;3mm +
rudimentary +
spatulate +  and oblanceolate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering Jun–Aug. +
trinucleate +  and 3(-11)-colpate +
ebracteate;3-13-flowered +
ascending +  and erect +
slender +
not flexuous +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
reduced +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
terete +, plane +, subglobose +, ovoid +, suborbicular +, linear +, oblong +, elliptic +, lanceolate +  and ovate +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
terete +, plane +, subglobose +, ovoid +, suborbicular +, linear +, oblong +, elliptic +, lanceolate +  and ovate +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
prostrate +  and decumbent +
usually erect +  and ascending +
subsessile +, sessile +  and petiolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
persistent +
distinct +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Abdra +, Erophila +, Nesodraba +  and Tomostima +
Draba californica +
species +
short-stalked +  and simple +
cruciform +  and forked +
0.005 cm0.05 mm <br />5.0e-5 m <br /> (0.025 cm0.25 mm <br />2.5e-4 m <br />) +
coiled +, 1-7-veined +  and veined +
glabrous +  and pubescent +
anastomosing +
scapose +  and not +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ascending +  and divaricate-ascending +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +