|
beavertip Draba, rockcress Draba, round-fruit Draba
|
Howell's Draba, Howell's whitlow-grass, rosette Draba
|
| Perennials; (cespitose, pulvinate); caudex branched (with persistent leaves, branches sometimes terminating in sterile rosettes); scapose. |
Perennials; (loosely cespitose); caudex branched (somewhat surculose, with persistent leaf remains, branches sometimes terminating in sterile rosettes); often scapose. |
unbranched, 0.1–0.5 dm, glabrous. |
unbranched, (0.2–)0.4–1.1(–1.5) dm, usually pubescent throughout, rarely glabrous, trichomes simple and 2–4-rayed, 0.1–0.6 mm. |
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). |
rosulate; blade (somewhat fleshy), oblanceolate or spatulate to obovate, 0.4–1.6(–2.5) cm × (1.5–)3–6(–10) mm, margins entire, surfaces pubescent with stalked, cruciform, and fewer 2- or 3-rayed trichomes, 0.07–0.5 mm, rarely both surfaces glabrous and trichomes on margins, (midvein obscure abaxially). |
0. |
0–3 (or 4); sessile; blade ovate to oblong, margins entire, pubescent as basal. |
2–5(–7)-flowered, ebracteate, slightly elongated in fruit; rachis not flexuous, glabrous. |
(5–)7–18(–25)-flowered, usually ebracteate, sometimes proximalmost 1 or 2 flowers bracteate, elongated in fruit; rachis not flexuous, usually pubescent as stem, rarely glabrous. |
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. |
sepals ovate, 2.5–3.2 mm, glabrous or pubescent, (trichomes 2–4-rayed); petals yellow, oblanceolate, 5.5–8 × 1–2 mm; anthers oblong, 0.7–0.9 mm. |
divaricate-ascending, straight or slightly curved, 2–6 mm, glabrous. |
divaricate-ascending, straight, (4–)7–10 mm, usually pubescent as stem, rarely glabrous. |
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. |
lanceolate to elliptic-lanceolate or broadly ovate, plane (not curved), strongly flattened, 6–11(–15) × 3–5 mm; valves usually pubescent, rarely glabrous, trichomes simple and 2–4-rayed, 0.05–0.3 mm; ovules 8–22 per ovary; style (0.7–)1.6–3 mm. |
oblong, 1.1–1.4 × 0.8–1 mm. |
oblong, 1–1.6 × 0.8–1 mm, (sometimes distally appendaged). |
|
|
|
|
| Flowering Jun–Aug. |
Flowering Jul–Aug. |
| Ridges, talus, alpine tundra and meadows |
Rocky summits, cracks in granite walls, rock crevices |
| 2700-3900 m (8900-12800 ft) |
1900-2700 m (6200-8900 ft) |
|
ID; MT; UT; WY
|
CA; OR |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Draba howellii is known from Siskiyou and Trinity counties, California, and Josephine County, Oregon. One collection, Tracy 14623 (DS, GH, UC), is unusual in having glabrous stems, pedicels, and leaf blade surfaces. In this regard, it resembles D. carnosula, but in all other respects (bracts, seeds, inflorescences, etc.), it is indistinguishable from D. howellii. For characteristics distinguishing the two species, see 23. D. carnosula. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 7, p. 308. |
FNA vol. 7, p. 312. |
| Brassicaceae > tribe Arabideae > Draba |
Brassicaceae > tribe Arabideae > Draba |
D. abajoensis, D. albertina, D. aleutica, D. alpina, D. aprica, D. arabisans, D. arctica, D. arctogena, D. argyrea, D. arida, D. asprella, D. asterophora, D. aurea, D. aureola, D. bifurcata, D. borealis, D. brachycarpa, D. brachystylis, D. breweri, D. burkei, D. californica, D. cana, D. carnosula, D. chamissonis, D. cinerea, D. corrugata, D. corymbosa, D. crassa, D. crassifolia, D. cruciata, D. cuneifolia, D. cusickii, D. cyclomorpha, D. daviesiae, D. densifolia, D. exunguiculata, D. fladnizensis, D. glabella, D. graminea, D. grandis, D. grayana, D. heilii, D. helleriana, D. hitchcockii, D. howellii, D. incana, D. incerta, D. incrassata, D. inexpectata, D. jaegeri, D. juvenilis, D. kassii, D. kluanei, D. lactea, D. lemmonii, D. lonchocarpa, D. longisquamosa, D. macounii, D. maguirei, D. malpighiacea, D. micropetala, D. mogollonica, D. monoensis, D. mulliganii, D. murrayi, D. nemorosa, D. nivalis, D. norvegica, D. novolympica, D. oblongata, D. ogilviensis, D. oligosperma, D. oreibata, D. oxycarpa, D. palanderiana, D. pauciflora, D. paucifructa, D. paysonii, D. pectinipila, D. pedicellata, D. pennellii, D. petrophila, D. pilosa, D. platycarpa, D. porsildii, D. praealta, D. pterosperma, D. ramosissima, D. ramulosa, D. rectifructa, D. reptans, D. ruaxes, D. santaquinensis, D. saxosa, D. scotteri, D. serpentina, D. sharsmithii, D. sibirica, D. sierrae, D. simmonsii, D. smithii, D. sobolifera, D. spectabilis, D. sphaerocarpa, D. sphaeroides, D. standleyi, D. stenoloba, D. stenopetala, D. streptobrachia, D. streptocarpa, D. subalpina, D. subcapitata, D. subumbellata, D. trichocarpa, D. ventosa, D. verna, D. viridis, D. weberi, D. yukonensis, D. zionensis |
D. abajoensis, D. albertina, D. aleutica, D. alpina, D. aprica, D. arabisans, D. arctica, D. arctogena, D. argyrea, D. arida, D. asprella, D. asterophora, D. aurea, D. aureola, D. bifurcata, D. borealis, D. brachycarpa, D. brachystylis, D. breweri, D. burkei, D. californica, D. cana, D. carnosula, D. chamissonis, D. cinerea, D. corrugata, D. corymbosa, D. crassa, D. crassifolia, D. cruciata, D. cuneifolia, D. cusickii, D. cyclomorpha, D. daviesiae, D. densifolia, D. exunguiculata, D. fladnizensis, D. glabella, D. globosa, D. graminea, D. grandis, D. grayana, D. heilii, D. helleriana, D. hitchcockii, D. incana, D. incerta, D. incrassata, D. inexpectata, D. jaegeri, D. juvenilis, D. kassii, D. kluanei, D. lactea, D. lemmonii, D. lonchocarpa, D. longisquamosa, D. macounii, D. maguirei, D. malpighiacea, D. micropetala, D. mogollonica, D. monoensis, D. mulliganii, D. murrayi, D. nemorosa, D. nivalis, D. norvegica, D. novolympica, D. oblongata, D. ogilviensis, D. oligosperma, D. oreibata, D. oxycarpa, D. palanderiana, D. pauciflora, D. paucifructa, D. paysonii, D. pectinipila, D. pedicellata, D. pennellii, D. petrophila, D. pilosa, D. platycarpa, D. porsildii, D. praealta, D. pterosperma, D. ramosissima, D. ramulosa, D. rectifructa, D. reptans, D. ruaxes, D. santaquinensis, D. saxosa, D. scotteri, D. serpentina, D. sharsmithii, D. sibirica, D. sierrae, D. simmonsii, D. smithii, D. sobolifera, D. spectabilis, D. sphaerocarpa, D. sphaeroides, D. standleyi, D. stenoloba, D. stenopetala, D. streptobrachia, D. streptocarpa, D. subalpina, D. subcapitata, D. subumbellata, D. trichocarpa, D. ventosa, D. verna, D. viridis, D. weberi, D. yukonensis, D. zionensis |
| D. apiculata, D. densifolia var. apiculata, D. densifolia var. decipiens, D. densifolia var. globosa |
|
| Payson: Amer. J. Bot. 4: 257. (1917) |
S. Watson: Proc. Amer. Acad. Arts 20: 354. (1885) |
| |
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
OR
Flora NW
