Difference between revisions of "Boechera macounii"
Harvard Pap. Bot. 11: 267. 2007.
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|name=Arabis densicaulis | |name=Arabis densicaulis | ||
|authority=A. Nelson | |authority=A. Nelson | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Arabis microphylla var. macounii | |name=Arabis microphylla var. macounii | ||
|authority=(S. Watson) Rollins | |authority=(S. Watson) Rollins | ||
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|elevation=2200-2900 m | |elevation=2200-2900 m | ||
|distribution=B.C.;Idaho;Mont.;Wyo. | |distribution=B.C.;Idaho;Mont.;Wyo. | ||
− | |discussion=<p>Morphological evidence suggests that Boechera macounii is an apomictic species that arose through hybridization between B. collinsii and B. microphylla (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison).</p> | + | |discussion=<p>Morphological evidence suggests that <i>Boechera macounii</i> is an apomictic species that arose through hybridization between <i>B. collinsii</i> and <i>B. microphylla</i> (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=2007 | |publication year=2007 | ||
|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/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V7/V7_552.xml |
|tribe=Brassicaceae tribe Boechereae | |tribe=Brassicaceae tribe Boechereae | ||
|genus=Boechera | |genus=Boechera |
Revision as of 18:58, 18 September 2019
Perennials; usually long-lived; apomictic; caudex often woody. Stems 1 or several per caudex branch, arising from center or margin of rosette near ground surface, 2–3.6 dm, densely pubescent proximally, trichomes simple and short-stalked, 2-rayed, 0.1–0.8 mm, glabrous distally. Basal leaves: blade oblanceolate to linear-oblanceolate, 1–3(–5) mm wide, margins entire or minutely toothed, ciliate proximally, trichomes (simple), to 0.7 mm, surfaces densely pubescent, trichomes short-stalked, 3–6-rayed, 0.07–0.3 mm. Cauline leaves: (5–)9–16, often concealing stem proximally; blade auricles 0.5–1.5 mm, surfaces of distalmost leaves glabrous. Racemes 10–33-flowered, usually unbranched. Fruiting pedicels divaricate-ascending to horizontal, straight, 5–13(–17) mm, usually densely pubescent, rarely glabrous, trichomes appressed, 2- or 3-rayed. Flowers divaricate-ascending at anthesis; sepals pubescent; petals lavender to purple, 4–5 × 0.5–0.8 mm, glabrous; pollen spheroid. Fruits divaricate-ascending to descending, not appressed to rachis, not secund, usually curved, edges parallel, 3.5–6.5 cm × 0.8–1.2 mm; valves glabrous; ovules 56–78 per ovary; style 0.1–0.4 mm. Seeds uniseriate, 1–1.2 × 0.7–1 mm; wing often continuous, 0.05–0.15 mm wide.
Phenology: Flowering May–Jul.
Habitat: Rocky hillsides in open pinewoods
Elevation: 2200-2900 m
Distribution
![V7 552-distribution-map.gif](/w/images/7/78/V7_552-distribution-map.gif)
B.C., Idaho, Mont., Wyo.
Discussion
Morphological evidence suggests that Boechera macounii is an apomictic species that arose through hybridization between B. collinsii and B. microphylla (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison).
Selected References
None.