Draba corrugata

S. Watson in W. H. Brewer et al.

in W. H. Brewer et al., Bot. California 2: 430. 1880.

IllustratedEndemicConservation concern
Synonyms: Draba vestita Davidson
Treatment appears in FNA Volume 7. Treatment on page 301. Mentioned on page 272, 274, 335.

Biennials or perennials; (short-lived); caudex simple (covered with persistent leaves); not scapose. Stems branched, (0.3–) 0.4–1.7 (–2.5) dm, pubescent throughout, trichomes simple and long-stalked, 2-rayed, 0.4–1.4 mm, with smaller, 2–4-rayed ones, 0.1–0.6 mm, (simple ones usually fewer distally). Basal leaves (densely imbricate); rosulate; shortly petiolate; petiole base and margin ciliate, (trichomes simple, 0.6–2 mm); blade oblong to narrowly oblanceolate, (0.5–) 1–2.2 (–4.5) cm × 2–5 mm, margins entire, surfaces densely pubescent, abaxially with stalked, 2–4-rayed trichomes, 0.4–1.2 mm, (simple trichomes often along midvein), adaxially with mostly simple and long-stalked, 2-rayed trichomes, 0.6–1.3 mm, sometimes with 3-rayed or 4-rayed ones. Cauline leaves (4–) 6–10 (–13); sessile; blade oblong to ovate, margins entire, surfaces pubescent as basal. Racemes (10–) 18–55 (–67) -flowered, ebracteate or proximalmost flowers bracteate, slightly or considerably elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate to ascending, straight, 2–6 (–8) mm, pubescent as stem. Flowers: sepals oblong, 2–2.7 mm, pubescent, (trichomes short-stalked, 2–4-rayed); petals yellow, linear, 2–3.5 × 0.2–0.5 mm; anthers oblong, 0.6–0.8 mm (exserted). Fruits elliptic to oblong or linear to oblongelliptic, slightly twisted or plane, flattened, 5–13 (–17) × 2–3 (–4) mm; valves pubescent, trichomes short-stalked, cruciform, 0.1–0.5 mm, (sometimes with 2-rayed or 3-rayed ones); ovules 16–28 per ovary; style 1.4–3.4 mm. Seeds oblong, 1–1.2 × 0.6–0.8 mm.


Phenology: Flowering Jun–Jul.
Habitat: Alpine fellfields, talus, open pine woodlands
Elevation: 2000-3500 m

Discussion

Of conservation concern.

Draba corrugata was broadly circumscribed by R. C. Rollins (1993) to include three varieties that we treat as distinct species. For a discussion of species limits and distinguishing features, see I. A. Al-Shehbaz and M. D. Windham (2007). Draba corrugata, in the strict sense, is known from the San Antonio, San Bernardino, and San Gabriel mountains in Los Angeles and San Bernardino counties.

Selected References

None.

Lower Taxa

None.

"not" is not a number. "elongated" is not a number."thick" is not a number.

... more about "Draba corrugata"
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
S. Watson in W. H. Brewer et al. +
appendaged +  and unappendaged +
2.2 cm22 mm <br />0.022 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
not +  and auriculate +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
lobed +, toothed +  and entire +
oblong;ovate +
much smaller +  and reduced +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
urceolate +, campanulate +  and tubular +
not scapose +  and simple +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
2000-3500 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 +
linear +, oblanceolate +, spatulate +, obovate +, subsaccate +, not saccate +, oblong +  and ovate +
1.3 cm13 mm <br />0.013 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
indehiscent +  and dehiscent +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
flattened +, plane +, elliptic +  and oblong or linear +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Alpine fellfields, talus, open pine woodlands +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
smaller +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
2mm;3.5mm +
rudimentary +
cruciform +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Flowering Jun–Jul. +
trinucleate +  and 3(-11)-colpate +
in W. H. Brewer et al., Bot. California +
ebracteate;(10-)18-55(-67)-flowered +
ascending +  and erect +
slender +
not flexuous +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
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 +
Illustrated +, Endemic +  and Conservation concern +
tetradynamous +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
straight +
procumbent +  and decumbent +
prostrate +  and decumbent +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Draba vestita +
Draba corrugata +
species +
short-stalked +, long-stalked +, simple +  and stalked +
cruciform +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
coiled +, 1-7-veined +  and veined +
anastomosing +
scapose +  and not +
perennial +  and biennial +
pubescent +  and glabrous +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +