Difference between revisions of "Boechera paddoensis"
Harvard Pap. Bot. 11: 268. 2007.
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|elevation=1500-2100 m | |elevation=1500-2100 m | ||
|distribution=Oreg.;Wash. | |distribution=Oreg.;Wash. | ||
| − | |discussion=<p>Morphological evidence suggests that Boechera paddoensis is an apomictic species that arose through hybridization between B. lemmonii and B. lyallii (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison). Boechera paddoensis is known only from the mountains of central Washington and northeastern Oregon.</p> | + | |discussion=<p>Morphological evidence suggests that <i>Boechera paddoensis</i> is an apomictic species that arose through hybridization between <i>B. lemmonii</i> and <i>B. lyallii</i> (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison). <i>Boechera paddoensis</i> is known only from the mountains of central Washington and northeastern Oregon.</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_558.xml |
|tribe=Brassicaceae tribe Boechereae | |tribe=Brassicaceae tribe Boechereae | ||
|genus=Boechera | |genus=Boechera | ||
Revision as of 17:58, 18 September 2019
Perennials; long-lived; (cespitose); apomictic; caudex usually woody. Stems 1–3 per caudex branch, arising from center of rosette near ground surface, or arising laterally proximal to sterile shoots, 1–2.5 dm, glabrous throughout. Basal leaves: blade narrowly oblanceolate, 1–3(–6) mm wide, margins usually entire, rarely apically few-toothed, not ciliate, surfaces sparsely pubescent, trichomes short-stalked, 4–8-rayed, 0.08–0.2 mm. Cauline leaves: 4–8, not concealing stem; blade auricles 1–2 mm, surfaces of distalmost leaves glabrous. Racemes 5–12(–18)-flowered, usually unbranched. Fruiting pedicels usually divaricate-ascending, rarely horizontal, straight, 2–5(–10) mm, glabrous. Flowers ascending at anthesis; sepals glabrous; petals lavender to purple, 4–5.5 × 1–1.5 mm, glabrous; pollen spheroid. Fruits usually divaricate-ascending, rarely horizontal, not appressed to rachis, secund (often weakly so), straight, edges parallel, 3–5.5 cm × 1.5–2 mm; valves glabrous; ovules 42–54 per ovary; style 0.05–0.1 mm. Seeds uniseriate, 1.1–1.5 × 0.9–1.3 mm; wing continuous, 0.1–0.3 mm wide.
Phenology: Flowering Jul–Aug.
Habitat: Rocky ridges
Elevation: 1500-2100 m
Discussion
Morphological evidence suggests that Boechera paddoensis is an apomictic species that arose through hybridization between B. lemmonii and B. lyallii (see M. D. Windham and I. A. Al-Shehbaz 2007 for detailed comparison). Boechera paddoensis is known only from the mountains of central Washington and northeastern Oregon.
Selected References
None.