Difference between revisions of "Boechera cusickii"
Novon 13: 384. 2003.
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|name=Arabis cusickii | |name=Arabis cusickii | ||
|authority=S. Watson | |authority=S. Watson | ||
| + | |rank=species | ||
|publication_title=Proc. Amer. Acad. Arts | |publication_title=Proc. Amer. Acad. Arts | ||
|publication_place=17: 363. 1882 | |publication_place=17: 363. 1882 | ||
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name=Boechera cusickii | name=Boechera cusickii | ||
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|authority=(S. Watson) Al-Shehbaz | |authority=(S. Watson) Al-Shehbaz | ||
|rank=species | |rank=species | ||
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|publication year=2003 | |publication year=2003 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V7/V7_510.xml |
|tribe=Brassicaceae tribe Boechereae | |tribe=Brassicaceae tribe Boechereae | ||
|genus=Boechera | |genus=Boechera | ||
Revision as of 22:17, 16 December 2019
Perennials; long-lived; (often cespitose); sexual; caudex usually woody. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, 1–2.5(–3.8) dm, densely pubescent proximally, trichomes simple, 0.5–1.5 mm, sparsely pubescent or glabrous distally. Basal leaves: blade linear to narrowly oblanceolate, 0.5–2 mm wide, margins entire, ciliate, trichomes (simple), 1–1.7 mm, surfaces moderately pubescent, trichomes simple and long-stalked, 2-rayed, 0.5–1.7 mm. Cauline leaves: 10–30, often concealing stem proximally; blade auricles 0–0.5 mm, surfaces of distalmost leaves sparsely pubescent. Racemes 5–14-flowered, usually unbranched. Fruiting pedicels ascending, straight, 4–15(–20) mm, glabrous or sparsely pubescent, trichomes simple. Flowers ascending at anthesis; sepals pubescent; petals white to lavender, 6–10 × 2–3 mm, glabrous; pollen ellipsoid. Fruits ascending to divaricate-ascending, not appressed to rachis, not secund, straight or curved, edges parallel, 4–8(–9.5) cm × 2.3–3 mm; valves glabrous; ovules 56–106 per ovary; style 0.1–0.5 mm. Seeds uniseriate, 1.5–2.5 × 1.5–2 mm; wing continuous, 0.1–0.2 mm wide distally.
Phenology: Flowering Apr-mid May.
Habitat: Basaltic bluffs, rocky slopes, rock crevices, gravelly hillsides, sagebrush hills, outcrops of volcanic rock
Elevation: 600-1800 m
Distribution
Idaho, Nev., Oreg., Wash.
Discussion
Peripheral populations of Boechera cusickii in south-central Idaho and northern Nevada have a higher proportion of branched hairs, possibly resulting from hybridization with B. sparsiflora.
Selected References
None.