Boechera stricta

(Graham) Al-Shehbaz

Novon 13: 389. 2003.

Basionym: Turritis stricta Graham Edinburgh New Philos. J. 7: 350. 1829
Synonyms: Arabis connexa Greene Arabis drummondii A. Gray Arabis drummondii var. connexa (Greene) Fernald Arabis drummondii var. oxyphylla (Greene) M. Hopkins Arabis oxyphylla (A. Gray) Á. Löve & D. Löve Boechera angustifolia (A. Gray) Kuntze Boechera drummondii Nuttall Erysimum drummondii (A. Gray) Lunell Streptanthus angustifolius Turritis drummondii
Treatment appears in FNA Volume 7. Mentioned on page 350, 355, 360, 365, 368, 374, 375, 380, 382, 399, 401, 403.

Biennials or perennials; usually short-lived; sexual; caudex usually not woody. Stems usually 1–4 per caudex branch, usually arising from center of rosette near ground surface, rarely arising laterally proximal to sterile shoots, 1.5–8(–10.2) dm, glabrous or sparsely pubescent proximally, trichomes sessile, usually 2-rayed, rarely simple, 0.3–0.7 mm, glabrous distally. Basal leaves: blade oblanceolate, 1.5–8(–14) mm wide, margins usually entire, rarely dentate, ciliate, trichomes (sessile, usually 2-rayed, rarely simple ones at petiole base), surfaces usually pubescent, sometimes glabrous, trichomes sessile, 2-rayed (malpighiaceous), 0.3–0.7 mm. Cauline leaves: 6–52, concealing stem proximally; blade auricles 0.5–3 mm, surfaces of distalmost leaves glabrous. Racemes 8–35(–80)-flowered, usually unbranched. Fruiting pedicels erect, straight, 5–18(–25) mm, glabrous. Flowers erect at anthesis; sepals glabrous; petals white (usually aging pale lavender), (5–)7–11 × 1.5–2.7 mm, glabrous; pollen ellipsoid. Fruits erect, appressed to rachis, not secund, straight, edges parallel, 4–9(–10.2) cm × 1.5–3.5 mm; valves glabrous; ovules 110–216 per ovary; style 0.05–0.3 mm. Seeds biseriate, 1.3–2.2 × 1–1.6 mm; wing lateral and distal, 0.3–0.8 mm wide. 2n = 14.

Phenology: Flowering May–Aug.
Habitat: Rocky slopes and gravelly soil in sagebrush and mountain shrub communities, open conifer and hardwood forests, alpine meadows
Elevation: 700-3900 m


V7 594-distribution-map.gif

Alta., B.C., N.W.T., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Iowa, Maine, Mass., Mich., Minn., Mont., Nev., N.H., N.Mex., N.Dak., Ohio, Oreg., R.I., Utah, Vt., Wash., Wis., Wyo.


Arabis drummondii is the correct name for this species in that genus; the epithet stricta has priority in Boechera. This very distinctive species is easily recognized by having basal leaves with branched trichomes, all sessile and 2-rayed (malpighiaceous). It is also the most promiscuous, having formed apomictic hybrids with at least 15 other species of Boechera.

Selected References


Lower Taxa

... more about "Boechera stricta"
Ihsan A. Al-Shehbaz +  and Michael D. Windham +
(Graham) Al-Shehbaz +
Turritis stricta +
Alta. +, B.C. +, N.W.T. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Iowa +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, Nev. +, N.H. +, N.Mex. +, N.Dak. +, Ohio +, Oreg. +, R.I. +, Utah +, Vt. +, Wash. +, Wis. +  and Wyo. +
700-3900 m +
Rocky slopes and gravelly soil in sagebrush and mountain shrub communities, open conifer and hardwood forests, alpine meadows +
Flowering May–Aug. +
Arabis connexa +, Arabis drummondii +, Arabis drummondii var. connexa +, Arabis drummondii var. oxyphylla +, Arabis oxyphylla +, Boechera angustifolia +, Boechera drummondii +, Erysimum drummondii +, Streptanthus angustifolius +  and Turritis drummondii +
Boechera stricta +
Boechera +
species +