Burke: Draba aurea vs. Draba porsildii

	Draba aurea	Draba porsildii
	golden draba whitlow-grass
Habit	Perennials not forming clumps; base unbranched or branched; stems typically 1-3.5 dm, occasionally branched distally, pubescent with simple trichomes and 3-6-rayed trichomes.
Leaves	Basal leaves forming rosettes, petioles ciliate with simple trichomes to 0.8 mm, blades narrower toward base, 1-3.7 cm long and 2-7 mm broad, margins entire or finely toothed, pubescent above and beneath, stalked trichomes with up to 8 rays, 0.2-0.5 mm; cauline leaves usually 5-20, sessile, ovate to lanceolate or sometimes narrower toward base, margins entire or dentate, pubescent above and beneath, upper surface sometimes with simple trichomes.
Flowers	Inflorescence racemose, generally 18-52 flowered, rarely up to 72 flowered, usually bracteate proximally; rachis rigid, pubescence same as stem; fruiting pedicels spreading-ascending to nearly erect, not curved, 3-13 mm, same pubescence as stem; sepals 4, green to yellowish, oblong, 2.2-3 mm, pubescent with simple and branched trichomes; petals 4, yellow, slender and narrower toward base, 3.5-5 mm long and 1.5-2.5 mm broad; anthers approximately 0.5 mm, ovate.
Fruits	Siliques, 6-17 mm long and 2-3.5 mm broad, often partially appressed to rachis, linear-lanceolate to lanceolate or may be slender and narrower toward base, twisted or plane, flattened; valves pubescent with simple trichomes and 2-4-rayed trichomes on short stalks; ovaries containing 28-38 or more ovules; seeds oblong, 0.9-1.3 mm long and about half as wide.

	Draba aurea	Draba porsildii
Flowering time	June-August
Habitat	Montane forest to alpine ridges or meadows.
Distribution	Occurring east of the Cascades crest in north-central Washington; Alaska to north-central Washington, east to the Rocky Mountains; Greenland. [WildflowerSearch map] [BONAP county map]	[BONAP county map]
Origin	Native
Conservation status	Sensitive in Washington (WANHP)
Sibling taxa	D. albertina, D. aureola, D. cana, D. crassifolia, D. densifolia, D. incerta, D. lonchocarpa, D. nemorosa, D. novolympica, D. oligosperma, D. platycarpa, D. praealta, D. reptans, D. ruaxes, D. stenoloba, D. taylori, D. taylorii, D. thompsonii, D. verna	D. albertina, D. aurea, D. aureola, D. cana, D. crassifolia, D. densifolia, D. incerta, D. lonchocarpa, D. nemorosa, D. novolympica, D. oligosperma, D. platycarpa, D. praealta, D. reptans, D. ruaxes, D. stenoloba, D. taylori, D. taylorii, D. thompsonii, D. verna
Web links	Local floras: BC, WA 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	Local floras: BC 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 aurea

Draba porsildii

golden draba whitlow-grass

Habit

Perennials not forming clumps; base unbranched or branched; stems typically 1-3.5 dm, occasionally branched distally, pubescent with simple trichomes and 3-6-rayed trichomes.

Leaves

Basal leaves forming rosettes, petioles ciliate with simple trichomes to 0.8 mm, blades narrower toward base, 1-3.7 cm long and 2-7 mm broad, margins entire or finely toothed, pubescent above and beneath, stalked trichomes with up to 8 rays, 0.2-0.5 mm;

cauline leaves usually 5-20, sessile, ovate to lanceolate or sometimes narrower toward base, margins entire or dentate, pubescent above and beneath, upper surface sometimes with simple trichomes.

Flowers

Inflorescence racemose, generally 18-52 flowered, rarely up to 72 flowered, usually bracteate proximally;

rachis rigid, pubescence same as stem; fruiting pedicels spreading-ascending to nearly erect, not curved, 3-13 mm, same pubescence as stem;

sepals 4, green to yellowish, oblong, 2.2-3 mm, pubescent with simple and branched trichomes;

petals 4, yellow, slender and narrower toward base, 3.5-5 mm long and 1.5-2.5 mm broad;

anthers approximately 0.5 mm, ovate.

Fruits

Siliques, 6-17 mm long and 2-3.5 mm broad, often partially appressed to rachis, linear-lanceolate to lanceolate or may be slender and narrower toward base, twisted or plane, flattened;

valves pubescent with simple trichomes and 2-4-rayed trichomes on short stalks;

ovaries containing 28-38 or more ovules;

seeds oblong, 0.9-1.3 mm long and about half as wide.