Draba cyclomorpha

Payson

Amer. J. Bot. 4: 263. 1917.

Synonyms: Draba lemmonii var. cyclomorpha (Payson) O. E. Schulz
Treatment appears in FNA Volume 7. Treatment on page 305. Mentioned on page 284, 316.

Perennials; (cespitose, not pulvinate); caudex branched (with persistent petiole remains, branches sometimes terminating in sterile rosettes); scapose. Stems unbranched, 0.1–0.6 (–1) dm, (thinly) pilose throughout, trichomes simple and stalked, 2- (or 3-) rayed, (often crisped), 0.1–0.8 mm. Basal leaves rosulate; shortly petiolate; petiole base and margin ciliate, (trichomes simple, 0.2–1 mm); blade (somewhat fleshy), oblanceolate to obovate, 0.4–1 cm × 2–5 mm, margins entire, surfaces glabrous or hirsute, abaxially usually with stalked, 2-rayed trichomes, 0.1–0.6 mm, rarely with fewer, simple ones, (midvein obscure), adaxially with almost exclusively simple trichomes, to 0.6 mm. Cauline leaves 0. Racemes 5–14 (–20) -flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels horizontal to divaricate-ascending, often curved upward or straight, 3–8 (–10) mm, pilose as stem. Flowers: sepals ovate, 1.5–2.2 mm, pubescent, (trichomes simple and short-stalked, 2-rayed); petals yellow, spatulate, 4–5.5 × 1.5–2.5 mm; anthers oblong, 0.6–0.7 mm. Fruits oblong to oblong-ovate, plane, flattened, 3.5–9 × 2.5–4 mm; valves glabrous; ovules 8–12 per ovary; style 0.3–1 mm. Seeds ovoid, 1.4–1.9 × 1–1.2 mm.


Phenology: Flowering Jul–Aug.
Habitat: Basaltic talus, stony ridges
Elevation: 2500-3100 m

Discussion

Draba cyclomorpha was treated by Schulz, C. L. Hitchcock (1941), and R. C. Rollins (1993) as a variety of D. lemmonii. The two taxa are quite distinct morphologically and separated by nearly 1600 kilometers, justifying their treatment as distinct species (I. A. Al-Shehbaz and M. D. Windham 2007). Draba cyclomorpha is known to us only from the Wallowa Mountains.

Selected References

None.

Lower Taxa

None.

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

... more about "Draba cyclomorpha"
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
Payson +
appendaged +  and unappendaged +
not +  and auriculate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
lobed +, toothed +  and entire +
oblanceolate;obovate +
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 +
scapose +  and branched +
sessile +  and petiolate +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
2500-3100 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 +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
flattened +, plane +, oblong +  and oblong-ovate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Basaltic talus, stony ridges +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
4mm;5.5mm +
rudimentary +
spatulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Flowering Jul–Aug. +
trinucleate +  and 3(-11)-colpate +
Amer. J. Bot. +
ebracteate;5-14(-20)-flowered +
ascending +  and erect +
slender +
not flexuous +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
persistent +  and caducous +
distinct +
spreading +, ascending +  and erect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 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 +
tetradynamous +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
straight +  and curved +
procumbent +  and decumbent +
prostrate +  and decumbent +
horizontal +  and divaricate-ascending +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
hirsute +  and glabrous +
0 cm0 mm <br />0 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Draba lemmonii var. cyclomorpha +
Draba cyclomorpha +
species +
simple +  and stalked +
cruciform +  and forked +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
coiled +, 1-7-veined +  and veined +
anastomosing +
scapose +  and not +
pubescent +  and glabrous +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +