FNA: Draba grayana vs. Draba paysonii

	Draba grayana	Draba paysonii
	Gray's Draba	Payson's Draba
Habit	Perennials; (densely cespitose); caudex branched (covered with persistent, somewhat thickened, dry petioles); not scapose.	Perennials; (cespitose, densely pulvinate); caudex branched (covered with persistent leaves, branches creeping, sometimes terminating in sterile rosettes); scapose.
Stems	unbranched, 0.08–0.6 dm, densely to moderately pubescent throughout, trichomes simple and stalked, 2- or 3-rayed, 0.2–1 mm.	unbranched, 0.05–0.3 dm, densely pubescent throughout, trichomes simple, 0.4–1.3 mm, and stalked, 2–5-rayed, stellate, 0.1–0.6 mm.
Basal leaves	rosulate; petiolate; petiole ciliate, (trichomes simple, 0.2–1 mm); blade linear to linear-oblanceolate, (0.4–)0.6–1.5(–2) cm × 1–2 mm, margins entire, (pubescent as petiole), surfaces pubescent abaxially with simple and stalked, 2- or 3-rayed trichomes, 0.1–0.4 mm, adaxially glabrate or subapically sparsely pubescent with simple trichomes.	(imbricate); rosulate; sessile; blade linear to linear-oblanceolate, 0.4–1.2 cm × 0.8–1.5 mm, margins entire, (ciliate, trichomes simple and spurred, (0.4–)0.6–1.4 mm), surfaces pubescent, abaxially (dense) with stalked, 2–12-rayed trichomes, 0.1–0.8 mm, adaxially with simple and 2-rayed ones, 0.3–1 mm, (midvein prominent).
Cauline leaves	1–4; sessile; blade linear to linear-oblanceolate, margins entire, surfaces pubescent as basal.	0.
Racemes	5–12(–16)-flowered, usually ebracteate, rarely proximalmost flowers bracteate, slightly elongated in fruit; rachis not flexuous, pubescent as stem.	2–7-flowered, ebracteate, slightly elongated in fruit; rachis not flexuous, pubescent as stem.
Flowers	sepals ovate, 1.5–2 mm, pubescent, (trichomes simple and short-stalked, 2- or 3-rayed); petals bright yellow, spatulate, 3–4.5 × 1–2 mm, (flared, clawed); anthers ovate, 0.3–0.5 mm.	sepals oblong, 2.8–3.5 mm, pubescent, (trichomes simple and short-stalked, 2–4-rayed); petals pale yellow, oblanceolate to spatulate, (4–)5–6 × (1.5–)2–3 mm; anthers oblong, 0.5–0.7 mm.
Fruiting pedicels	divaricate-ascending, straight or slightly curved upward, 1.5–6 mm, pubescent as stem.	divaricate-ascending, straight, 3–9 mm, pubescent, trichomes simple (0.4–1.4 mm), and stalked, 2–5-rayed (0.1–0.6 mm).
Fruits	lanceolate to oblong-lanceolate, slightly twisted or plane, flattened, 4–12 × 1.5–3 mm; valves glabrous or pubescent, trichomes simple, 0.07–0.2 mm; ovules 16–20 per ovary; style 0.4–1.2 mm.	often broadly ovoid to lanceolate, plane, slightly inflated basally, (5–)6–9 × (3–)3.7–5 mm; valves densely pubescent, trichomes simple and 2-rayed, (0.2–)0.4–1 mm, (occasionally with fewer, smaller, 4- or 5-rayed ones); ovules 8–12 per ovary; style (0.6–)0.8–1.2 mm.
Seeds	ovoid, 1–1.4 × 0.7–1 mm.	oblong, 1.7–2.2 × 1–1.4 mm.
2n	= 24 ± 3.

	Draba grayana	Draba paysonii
Phenology	Flowering Jul–Aug.	Flowering Jun–Jul.
Habitat	Alpine tundra, fellfields, gravelly wet meadows	Limestone rock outcrops, talus, gravelly calcareous soil
Elevation	3500-4000 m (11500-13100 ft)	1800-3500 m (5900-11500 ft)
Distribution	CO [BONAP county map]	MT; WY [BONAP county map]
Discussion	Of conservation concern. Draba grayana is an apomictic species clearly related to D. exunguiculata, with which it is occasionally sympatric (see discussion of 36. D. exunguiculata for distinguishing features). It is known from Chaffe, Clear Creek, Larimer, Park, and Summit counties. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Draba paysonii is known from southwestern Montana (Gallatin, Glacier, Madison, and Meagher counties) and northwestern Wyoming (Fremont and Park counties). Reports of its occurrence in Alberta (e.g., G. A. Mulligan 1971b) are based on plants of D. novolympica, a species formerly treated as D. paysonii var. treleasei. Features distinguishing these two species are discussed under 70. D. novolympica. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 7, p. 310.	FNA vol. 7, p. 327.
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. 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. 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. 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
Synonyms	D. streptocarpa var. grayana, D. alpicola	D. vestita
Name authority	(Rydberg) C. L. Hitchcock: Revis. Drabas W. N. Amer., 29. (1941)	J. F. Macbride: Contr. Gray Herb. 56: 52. (1918)
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: OR Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Draba paysonii

Gray's Draba

Payson's Draba

Habit

Perennials; (densely cespitose); caudex branched (covered with persistent, somewhat thickened, dry petioles); not scapose.

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

Stems

unbranched, 0.08–0.6 dm, densely to moderately pubescent throughout, trichomes simple and stalked, 2- or 3-rayed, 0.2–1 mm.

unbranched, 0.05–0.3 dm, densely pubescent throughout, trichomes simple, 0.4–1.3 mm, and stalked, 2–5-rayed, stellate, 0.1–0.6 mm.

Basal leaves

rosulate;

petiolate;

petiole ciliate, (trichomes simple, 0.2–1 mm);

blade linear to linear-oblanceolate, (0.4–)0.6–1.5(–2) cm × 1–2 mm, margins entire, (pubescent as petiole), surfaces pubescent abaxially with simple and stalked, 2- or 3-rayed trichomes, 0.1–0.4 mm, adaxially glabrate or subapically sparsely pubescent with simple trichomes.

(imbricate); rosulate;

sessile;

blade linear to linear-oblanceolate, 0.4–1.2 cm × 0.8–1.5 mm, margins entire, (ciliate, trichomes simple and spurred, (0.4–)0.6–1.4 mm), surfaces pubescent, abaxially (dense) with stalked, 2–12-rayed trichomes, 0.1–0.8 mm, adaxially with simple and 2-rayed ones, 0.3–1 mm, (midvein prominent).

Cauline leaves

1–4;

sessile;

blade linear to linear-oblanceolate, margins entire, surfaces pubescent as basal.

Racemes

5–12(–16)-flowered, usually ebracteate, rarely proximalmost flowers bracteate, slightly elongated in fruit;

rachis not flexuous, pubescent as stem.

2–7-flowered, ebracteate, slightly elongated in fruit;

rachis not flexuous, pubescent as stem.

Flowers

sepals ovate, 1.5–2 mm, pubescent, (trichomes simple and short-stalked, 2- or 3-rayed);

petals bright yellow, spatulate, 3–4.5 × 1–2 mm, (flared, clawed);

anthers ovate, 0.3–0.5 mm.

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

petals pale yellow, oblanceolate to spatulate, (4–)5–6 × (1.5–)2–3 mm;

anthers oblong, 0.5–0.7 mm.

Fruiting pedicels

divaricate-ascending, straight or slightly curved upward, 1.5–6 mm, pubescent as stem.

divaricate-ascending, straight, 3–9 mm, pubescent, trichomes simple (0.4–1.4 mm), and stalked, 2–5-rayed (0.1–0.6 mm).

Fruits

lanceolate to oblong-lanceolate, slightly twisted or plane, flattened, 4–12 × 1.5–3 mm;

valves glabrous or pubescent, trichomes simple, 0.07–0.2 mm;

ovules 16–20 per ovary;

style 0.4–1.2 mm.

often broadly ovoid to lanceolate, plane, slightly inflated basally, (5–)6–9 × (3–)3.7–5 mm;

valves densely pubescent, trichomes simple and 2-rayed, (0.2–)0.4–1 mm, (occasionally with fewer, smaller, 4- or 5-rayed ones);

ovules 8–12 per ovary;

style (0.6–)0.8–1.2 mm.

Seeds

ovoid, 1–1.4 × 0.7–1 mm.

oblong, 1.7–2.2 × 1–1.4 mm.

= 24 ± 3.

Draba grayana

Draba paysonii

Phenology

Flowering Jul–Aug.

Flowering Jun–Jul.

Habitat

Alpine tundra, fellfields, gravelly wet meadows

Limestone rock outcrops, talus, gravelly calcareous soil

Elevation

3500-4000 m (11500-13100 ft)

1800-3500 m (5900-11500 ft)

Distribution

[BONAP county map]

MT; WY

[BONAP county map]

Discussion

Of conservation concern.

Draba grayana is an apomictic species clearly related to D. exunguiculata, with which it is occasionally sympatric (see discussion of 36. D. exunguiculata for distinguishing features). It is known from Chaffe, Clear Creek, Larimer, Park, and Summit counties.

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

Draba paysonii is known from southwestern Montana (Gallatin, Glacier, Madison, and Meagher counties) and northwestern Wyoming (Fremont and Park counties). Reports of its occurrence in Alberta (e.g., G. A. Mulligan 1971b) are based on plants of D. novolympica, a species formerly treated as D. paysonii var. treleasei. Features distinguishing these two species are discussed under 70. D. novolympica.

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

Source

FNA vol. 7, p. 310.

FNA vol. 7, p. 327.

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. 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. 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. 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

Synonyms

D. streptocarpa var. grayana, D. alpicola

D. vestita

Name authority

(Rydberg) C. L. Hitchcock: Revis. Drabas W. N. Amer., 29. (1941)

J. F. Macbride: Contr. Gray Herb. 56: 52. (1918)

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, OregonFlora

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Draba grayana

Draba paysonii

Draba grayana

Draba paysonii