FNA: Draba kassii vs. Draba sharsmithii

	Draba kassii	Draba sharsmithii
	kass' Draba	Mount Whitney Draba, Mt. Whitney Draba, Sharsmith's Draba
Habit	Perennials; caudex branched (densely covered with persistent petiole remains, branches sometimes terminating in sterile rosettes); scapose.	Perennials; (densely cespitose); caudex branched (covered with persistent leaves or leaf remains, branches sometimes terminating in sterile rosettes); scapose.
Stems	unbranched, 0.5–1.8 dm, glabrous.	unbranched, (0.15–)0.3–0.7(–1) dm, glabrous throughout or pubescent proximally, trichomes simple and 2-rayed, 0.1–0.4 mm.
Basal leaves	rosulate; long-petiolate; petiole ciliate throughout; blade oblanceolate to linear-oblanceolate, 1.5–5.5 cm × (1.5–)2–5.5 mm, margins entire (ciliate, trichomes simple, 0.2–1 mm), surfaces abaxially sparsely pubescent with short-stalked, submalpighiaceous trichomes, 0.3–1.3 mm, sometimes with 3- or 4-rayed ones, adaxially usually glabrous, rarely sparsely pubescent.	rosulate; petiolate; petiole base and margin ciliate, (trichomes simple and 2-rayed, 0.3–1 mm); blade oblanceolate to oblong-obovate or oblong, 0.4–0.7(–1) cm × 1–3(–5) mm, margins entire, surfaces pubescent abaxially with short-stalked, 2–5-rayed trichomes, 0.1–0.4 mm, adaxially glabrous or sparsely pubescent, with simple and short-stalked, 2-rayed trichomes.
Cauline leaves	0.	0.
Racemes	3–8(–10)-flowered, ebracteate, considerably elongated in fruit; rachis not flexuous, glabrous.	2–10(–16)-flowered, ebracteate, elongated in fruit; rachis not flexuous, glabrous.
Flowers	sepals broadly ovate, 2–3 mm, subapically sparsely pubescent, (trichomes simple); petals yellow, oblanceolate, 4.5–7 × 1.2–2 mm; anthers ovate, 0.4–0.5 mm.	sepals ovate, 2.8–3.5 mm, sparsely pubescent, (trichomes simple and short-stalked, 2–4-rayed); petals yellow, spatulate to oblanceolate, 4–6 × 2–3 mm; anthers oblong, 0.6–0.7 mm.
Fruiting pedicels	ascending to divaricate-ascending, straight, 5–14(–17) mm, glabrous.	ascending, straight, (3–)5–12(–16) mm, glabrous.
Fruits	elliptic to oblong-elliptic, plane, flattened, 3–10(–14) × 2–3 mm; valves glabrous; ovules 20–28 per ovary; style 0.6–1 mm.	oblong to lanceolate or narrowly ovate, twisted (curved), flattened, (5–)8–15(–20) × 2–4(–5) mm; valves usually glabrous, rarely pubescent, trichomes simple and short-stalked, 2-rayed, (marginal), 0.5–0.15 mm; ovules 16–20 per ovary; style (0.5–)0.9–1.8(–2) mm.
Seeds	oblong, 1.2–1.4 × 0.7–0.8 mm.	oblong, 1–1.6 × 0.6–0.7 mm.
2n	= 22.	= 36.

	Draba kassii	Draba sharsmithii
Phenology	Flowering Apr–Jun.	Flowering Jul–Aug.
Habitat	Quartzite and granitic outcrops	Granitic outcrops and rocky slopes in open subalpine conifer communities
Elevation	2100-2600 m (6900-8500 ft)	3300-3800 m (10800-12500 ft)
Distribution	UT [BONAP county map]	CA [BONAP county map]
Discussion	Of conservation concern. Draba kassii is a distinctive species that is known from the Deep Creek Mountains in Juab and Tooele counties. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Of conservation concern. Draba sharsmithii is clearly related to D. cruciata; there is some evidence that it may be an allopolyploid incorporating a genome from that species. It is known only from the vicinity of Mount Whitney in the southern Sierra Nevada (Inyo County). (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 7, p. 315.	FNA vol. 7, p. 336.
Parent taxa	Brassicaceae > tribe Arabideae > Draba	Brassicaceae > tribe Arabideae > Draba
Sibling taxa	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. 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. 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. 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
Synonyms		D. cruciata var. integrifolia
Name authority	S. L. Welsh: Great Basin Naturalist 46: 264. (1986)	Rollins & R. A. Price: Harvard Pap. Bot. 1(3): 71. (1991)
Web links	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Draba sharsmithii

kass' Draba

Mount Whitney Draba, Mt. Whitney Draba, Sharsmith's Draba

Habit

Perennials; caudex branched (densely covered with persistent petiole remains, branches sometimes terminating in sterile rosettes); scapose.

Perennials; (densely cespitose); caudex branched (covered with persistent leaves or leaf remains, branches sometimes terminating in sterile rosettes); scapose.

Stems

unbranched, 0.5–1.8 dm, glabrous.

unbranched, (0.15–)0.3–0.7(–1) dm, glabrous throughout or pubescent proximally, trichomes simple and 2-rayed, 0.1–0.4 mm.

Basal leaves

rosulate; long-petiolate;

petiole ciliate throughout;

blade oblanceolate to linear-oblanceolate, 1.5–5.5 cm × (1.5–)2–5.5 mm, margins entire (ciliate, trichomes simple, 0.2–1 mm), surfaces abaxially sparsely pubescent with short-stalked, submalpighiaceous trichomes, 0.3–1.3 mm, sometimes with 3- or 4-rayed ones, adaxially usually glabrous, rarely sparsely pubescent.

rosulate;

petiolate;

petiole base and margin ciliate, (trichomes simple and 2-rayed, 0.3–1 mm);

blade oblanceolate to oblong-obovate or oblong, 0.4–0.7(–1) cm × 1–3(–5) mm, margins entire, surfaces pubescent abaxially with short-stalked, 2–5-rayed trichomes, 0.1–0.4 mm, adaxially glabrous or sparsely pubescent, with simple and short-stalked, 2-rayed trichomes.

Cauline leaves

Racemes

3–8(–10)-flowered, ebracteate, considerably elongated in fruit;

rachis not flexuous, glabrous.

2–10(–16)-flowered, ebracteate, elongated in fruit;

rachis not flexuous, glabrous.

Flowers

sepals broadly ovate, 2–3 mm, subapically sparsely pubescent, (trichomes simple);

petals yellow, oblanceolate, 4.5–7 × 1.2–2 mm;

anthers ovate, 0.4–0.5 mm.

sepals ovate, 2.8–3.5 mm, sparsely pubescent, (trichomes simple and short-stalked, 2–4-rayed);

petals yellow, spatulate to oblanceolate, 4–6 × 2–3 mm;

anthers oblong, 0.6–0.7 mm.

Fruiting pedicels

ascending to divaricate-ascending, straight, 5–14(–17) mm, glabrous.

ascending, straight, (3–)5–12(–16) mm, glabrous.

Fruits

elliptic to oblong-elliptic, plane, flattened, 3–10(–14) × 2–3 mm;

valves glabrous;

ovules 20–28 per ovary;

style 0.6–1 mm.

oblong to lanceolate or narrowly ovate, twisted (curved), flattened, (5–)8–15(–20) × 2–4(–5) mm;

valves usually glabrous, rarely pubescent, trichomes simple and short-stalked, 2-rayed, (marginal), 0.5–0.15 mm;

ovules 16–20 per ovary;

style (0.5–)0.9–1.8(–2) mm.

Seeds

oblong, 1.2–1.4 × 0.7–0.8 mm.

oblong, 1–1.6 × 0.6–0.7 mm.

= 22.

= 36.

Draba kassii

Draba sharsmithii

Phenology

Flowering Apr–Jun.

Flowering Jul–Aug.

Habitat

Quartzite and granitic outcrops

Granitic outcrops and rocky slopes in open subalpine conifer communities

Elevation

2100-2600 m (6900-8500 ft)

3300-3800 m (10800-12500 ft)

Distribution

[BONAP county map]

Discussion

Of conservation concern.

Draba kassii is a distinctive species that is known from the Deep Creek Mountains in Juab and Tooele counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Draba sharsmithii is clearly related to D. cruciata; there is some evidence that it may be an allopolyploid incorporating a genome from that species. It is known only from the vicinity of Mount Whitney in the southern Sierra Nevada (Inyo County).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source

FNA vol. 7, p. 315.

FNA vol. 7, p. 336.

Parent taxa

Brassicaceae > tribe Arabideae > Draba

Sibling taxa

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. 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. 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. 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

Synonyms

D. cruciata var. integrifolia

Name authority

S. L. Welsh: Great Basin Naturalist 46: 264. (1986)

Rollins & R. A. Price: Harvard Pap. Bot. 1(3): 71. (1991)

Web links

Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).

Choose a data source: Flora of North America

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Flora of North America species comparison

Draba kassii

Draba sharsmithii

Draba kassii

Draba sharsmithii