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Charleston Mountain Draba
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Smith's Draba
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| Perennials; caudex simple or branched (not fleshy, usually with some persistent leaf remains); sometimes scapose. |
Perennials; (matted); caudex branched (with persistent leaf remains, branches slender, prostrate, sometimes terminating in sterile rosettes); not scapose. |
unbranched, (0.1–)0.3–0.9 dm, glabrous throughout or sparsely pubescent proximally, trichomes simple and 2–6-rayed, 0.1–0.5 mm. |
usually unbranched, (0.5–)1–2.4(–3) dm, pubescent throughout, trichomes short-stalked, subdendritic, 4–12-rayed, 0.05–0.2 mm. |
rosulate; petiolate; petiole (0–0.5 cm), ciliate throughout; blade oblanceolate to obovate, 0.4–1.7(–2.3) cm × 1.6–4(–6) mm, margins usually entire, rarely denticulate, (sparsely ciliate, trichomes simple, 0.3–0.8 mm), surfaces pubescent, abaxially with stalked, (2–)4(–6)-rayed trichomes, (0.05–)0.1–0.6 mm, adaxially with simple and fewer, stalked, 2–4-rayed ones. |
rosulate; petiole (obscure), usually not ciliate, rarely pubescent proximally, (trichomes simple or spurred, to 0.25 mm); blade obovate to narrowly oblanceolate, 0.5–1.3(–2.5) cm × (1–)2–4(–7) mm, margins usually entire, rarely denticulate, surfaces pubescent with short-stalked, subdendritic, 5–12-rayed trichomes, 0.05–0.3 mm. |
0 or 1; sessile; blade ovate to lanceolate, margins entire, surfaces pubescent as basal. |
(2 or) 3–8; sessile; blade oblong to lanceolate, margins usually entire, rarely denticulate, surfaces pubescent as basal, or, rarely, adaxially with long-stalked, 2–5-rayed trichomes. |
(2–)4–9(–12)-flowered, ebracteate, elongated in fruit; rachis slightly flexuous, glabrous. |
12–28-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. |
sepals ovate, 1.2–1.7 mm, pubescent, (trichomes simple and short-stalked, 2- or 3-rayed); petals yellowish (quickly fading white), spatulate, 1.8–2.2 × 0.6–1 mm; anthers ovate, 0.25–0.3 mm. |
sepals ovate, 2–2.5 mm, pubescent; petals white, spatulate, 4–6 × 2–3 mm; anthers ovate, 0.5–0.6 mm. |
divaricate-ascending, straight, 2–5(–8) mm, glabrous. |
divaricate, straight, (3–)5–10(–13) mm, pubescent as stem. |
elliptic to linear lanceolate, plane, flattened, 5–10(–12) × 1.7–2(–2.5) mm; valves glabrous; ovules 20–30 per ovary; style 0.08–0.2 mm. |
ovate-lanceolate, twisted, flattened, 5–9 × 2–3 mm; valves pubescent, trichomes simple and short-stalked, 2–4-rayed, 0.05–0.2 mm; ovules 16–20 per ovary; style (0.7–)1–2(–2.3) mm. |
oblong, 0.9–1.2 × 0.5–0.8 mm. |
oblong, 0.8–1.2 × 0.5–0.7 mm. |
= 40. |
= 32. |
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| Flowering Jun–Jul. |
Flowering May–Jul. |
| Moist, shaded slopes among limestone and dolomite rocks |
Igneous outcrops and rocky slopes in mixed conifer, mountain shrub, and (rarely) sagebrush communities |
| 2600-3500 m (8500-11500 ft) |
2300-3700 m (7500-12100 ft) |
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NV |
CO |
Of conservation concern. Draba paucifructa is known from the Charleston Mountains in Clark County. M. D. Windham (2004) suggested that it is an allopolyploid resulting from hybridization between D. albertina and D. lonchocarpa, and he discussed the morphological features that distinguish this species from its putative parents. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Draba smithii is a distinctive species known only from Archuleta, Las Animas, and Mineral counties in southern Colorado. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 7, p. 327. |
FNA vol. 7, p. 338. |
| 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. globosa, 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. 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. 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. 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 |
| Clokey & C. L. Hitchcock: Madroño 5: 127. (1939) |
Gilg & O. E. Schulz: in H. G. A. Engler, Pflanzenr. 89[IV,105]: 177. (1927) |
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