Draba globosa

Payson

Amer. J. Bot. 4: 257. 1917.

Synonyms: Draba apiculata C. L. Hitchcock Draba densifolia var. apiculata (C. L. Hitchcock) S. L. Welsh Draba densifolia var. decipiens S. L. Welsh Draba densifolia var. globosa (Payson) S. L. Welsh
Treatment appears in FNA Volume 7. Treatment on page 308. Mentioned on page 280, 305.

Perennials; (cespitose, pulvinate); caudex branched (with persistent leaves, branches sometimes terminating in sterile rosettes); scapose. Stems unbranched, 0.1–0.5 dm, glabrous. Basal leaves rosulate; sessile; blade (not fleshy), narrowly oblanceolate or lanceolate to linear, (0.2–) 0.3–0.8 cm × 0.5–1.6 (–2) mm, margins entire (ciliate, trichomes simple, 0.1–0.8 mm, apex acute, trichomes usually longer), surfaces glabrous, (midvein obscure abaxially). Cauline leaves 0. Racemes 2–5 (–7) -flowered, ebracteate, slightly elongated in fruit; rachis not flexuous, glabrous. Fruiting pedicels divaricate-ascending, straight or slightly curved, 2–6 mm, glabrous. Flowers: sepals (persistent to near fruit maturity), ovate to broadly oblong, 2–3 mm, glabrous; petals white to pale-yellow, obovate, 2.5–4 × 1.2–2 mm; anthers oblong, 0.4–0.6 mm. Fruits ovate, plane, flattened, 4.5–8 × 2.5–4 mm; valves (distinctly veined), glabrous; ovules 8–16 per ovary; style (0.1–) 0.2–0.6 mm. Seeds oblong, 1.1–1.4 × 0.8–1 mm.


Phenology: Flowering Jun–Aug.
Habitat: Ridges, talus, alpine tundra and meadows
Elevation: 2700-3900 m

Discussion

Draba globosa is an apomictic species closely related to D. burkei (M. D. Windham, unpubl.). Though often treated as a variety of D. densifolia, it is morphologically and phyletically distinct from that species. Both R. C. Rollins (1993) and N. H. Holmgren (2005b) indicated that the species occurs in Colorado, but we have not seen material for that state.

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.

... more about "Draba globosa"
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
Payson +
appendaged +  and unappendaged +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
not +  and auriculate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
lobed +, toothed +  and entire +
lanceolate;linear +
much smaller +  and reduced +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
urceolate +, campanulate +  and tubular +
scapose +  and branched +
sessile +  and petiolate +
well-developed +
distinct +
well-differentiated +
emarginate +  and entire +
Idaho +, Mont. +, Utah +  and Wyo. +
2700-3900 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 +
ovate +  and broadly oblong +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
latiseptate +, twisted +  and sessile +
indehiscent +  and dehiscent +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
flattened +, plane +  and ovate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ridges, talus, alpine tundra and meadows +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
white +  and pale-yellow +
2.5mm;4mm +
rudimentary +
obovate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Jun–Aug. +
trinucleate +  and 3(-11)-colpate +
Amer. J. Bot. +
ebracteate;2-5(-7)-flowered +
ascending +  and erect +
slender +
curved +, straight +  and not flexuous +
divaricate-ascending +
mucilaginous +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 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 +
procumbent +  and decumbent +
prostrate +  and decumbent +
usually erect +  and ascending +
subsessile +, sessile +  and petiolate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
persistent +
distinct +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Draba apiculata +, Draba densifolia var. apiculata +, Draba densifolia var. decipiens +  and Draba densifolia var. globosa +
Draba globosa +
species +
dendritic +, malpighiaceous +, simple +, sessile +  and stalked +
cruciform +  and forked +
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 +