Boechera canadensis

(Linnaeus) Al-Shehbaz

Novon 13: 384. 2003.

Basionym: Arabis canadensis Linnaeus Sp. Pl. 2: 665, 1200. 1753
Synonyms: Arabis falcata Michaux Arabis hirsuta var. ovata (Pursh) Torrey & A. Gray Arabis ovata (Pursh) Poiret
Treatment appears in FNA Volume 7. Treatment on page 369. Mentioned on page 352, 357, 359, 363.

Biennials; short-lived; sexual; caudex not evident. Stems 1 per plant, arising from center of rosette near ground surface, 2.5–10(–12.5) dm, sparsely to densely pubescent proximally, trichomes simple, to 1 mm, glabrous or sparsely pubescent distally. Basal leaves: blade obovate to oblanceolate, 10–30 mm wide, margins dentate, ciliate proximally, trichomes simple, to 1 mm, surfaces moderately pubescent, trichomes simple, 0.5–1.5 mm, these mixed with smaller, 2- or 3-rayed ones. Cauline leaves: 12–20, often concealing stem proximally; blade auricles absent or proximalmost blades with auricles 0.5–2(–5) mm, surfaces of distalmost leaves sparsely pubescent. Racemes 15–65(–82)-flowered, sometimes branched. Fruiting pedicels descending to horizontal, usually curved, rarely straight, 6–13(–17) mm, pubescent or glabrous, trichomes subappressed, usually 2-rayed. Flowers divaricate-ascending to horizontal at anthesis; sepals pubescent; petals white, 3–5 × 0.7–1.2 mm, glabrous; pollen ellipsoid. Fruits pendent to horizontal, not appressed to rachis, often secund, curved, edges parallel, 4–10 cm × 2.5–4 mm; valves glabrous; ovules 40–62 per ovary; style 0.3–0.8(–1.1) mm. Seeds uniseriate, 1.7–3.5 × 1.5–2.2 mm; wing continuous, 0.4–1 mm wide distally. 2n = 14.


Phenology: Flowering Apr–Jul.
Habitat: Bluffs, rocky slopes, ravines, open woods
Elevation: 0-1200 m

Distribution

V7 502-distribution-map.gif

Que., Ala., Ark., Conn., D.C., Fla., Ga., Ill., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.Y., N.C., Ohio, Okla., Pa., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Boechera canadensis"
Ihsan A. Al-Shehbaz +  and Michael D. Windham +
(Linnaeus) Al-Shehbaz +
Arabis canadensis +
Que. +, Ala. +, Ark. +, Conn. +, D.C. +, Fla. +, Ga. +, Ill. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0-1200 m +
Bluffs, rocky slopes, ravines, open woods +
Flowering Apr–Jul. +
Arabis falcata +, Arabis hirsuta var. ovata +  and Arabis ovata +
Boechera canadensis +
Boechera +
species +