Burke: Boechera paupercula

	Boechera paupercula
	Boechera paupercula
Habit	Long-lived perennials, from a typically woody crown; stems simple from each caudex branch, 3-15 cm tall, pubescence dense near base with simple and short-stalked trichomes, 2-4-rayed, to 0.2 mm, becoming glabrous or sparsely pubescent distally.
Leaves	Basal leaves narrowly oblanceolate, usually 1-3 mm broad, margins entire, ciliate near base with 0.4 mm trichomes, densely pubescent above and beneath with 2-6-rayed trichomes on short-stalks and up to 0.2 mm; cauline leaves 2-6, not commonly hiding the stem, lobe-like appendages at base usually absent or up to 1.5 mm, surfaces becoming glabrous towards ends of stems.
Flowers	Inflorescence usually 3-8-flowered, unbranched racemes; fruiting pedicels erect, not curved, 3-9 mm, glabrous or barely pubescent, not secund; flowers erect; sepals 4, glabrous or sparsely pubescent; petals 4, purplish to light purple, 4-6 mm long and 1-2 mm broad, glabrous; pollen ellipsoid.
Fruits	Siliques 2.5-5.5 cm long and 1.3-1.7 mm broad, erect, appressed to rachis, not curved, with parallel edges; valves glabrous; seeds in 1 series or uncommonly in nearly 2 series, 1.5-2 mm long and 1-1.4 mm broad, with a continuous wing 0.3-1 mm broad.

	Boechera paupercula
Flowering time	June-August
Habitat	Rocky slopes and talus, subalpine to alpine.
Distribution	Occurring west of the Cascades crest in the Olympic Mountains in Washington; Washington to California, east to Idaho and Wyoming. [WildflowerSearch map] [BONAP county map]
Origin	Native
Conservation status	Review Group 1 in Washington (WANHP)
Sibling taxa	B. atrorubens, B. calderi, B. cascadensis, B. cusickii, B. divaricarpa, B. drepanoloba, B. grahamii, B. lemmonii, B. lyallii, B. microphylla, B. paddoensis, B. pauciflora, B. pendulocarpa, B. polyantha, B. puberula, B. retrofracta, B. sparsiflora, B. stricta, B. suffrutescens
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Boechera paupercula

Habit

Long-lived perennials, from a typically woody crown; stems simple from each caudex branch, 3-15 cm tall, pubescence dense near base with simple and short-stalked trichomes, 2-4-rayed, to 0.2 mm, becoming glabrous or sparsely pubescent distally.

Leaves

Basal leaves narrowly oblanceolate, usually 1-3 mm broad, margins entire, ciliate near base with 0.4 mm trichomes, densely pubescent above and beneath with 2-6-rayed trichomes on short-stalks and up to 0.2 mm;

cauline leaves 2-6, not commonly hiding the stem, lobe-like appendages at base usually absent or up to 1.5 mm, surfaces becoming glabrous towards ends of stems.

Flowers

Inflorescence usually 3-8-flowered, unbranched racemes; fruiting pedicels erect, not curved, 3-9 mm, glabrous or barely pubescent, not secund;

flowers erect;

sepals 4, glabrous or sparsely pubescent;

petals 4, purplish to light purple, 4-6 mm long and 1-2 mm broad, glabrous;

pollen ellipsoid.

Fruits

Siliques 2.5-5.5 cm long and 1.3-1.7 mm broad, erect, appressed to rachis, not curved, with parallel edges;

valves glabrous;

seeds in 1 series or uncommonly in nearly 2 series, 1.5-2 mm long and 1-1.4 mm broad, with a continuous wing 0.3-1 mm broad.