Difference between revisions of "Boechera grahamii"
Harvard Pap. Bot. 12: 241. 2007.
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|year=2007 | |year=2007 | ||
}} | }} | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Turritis grahamii | |name=Turritis grahamii | ||
|authority=Lehmann | |authority=Lehmann | ||
| + | |rank=species | ||
| + | |publication_title=Index Seminum (Hamburg) | ||
| + | |publication_place=1831: 7. 1831, | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Arabis boivinii | |name=Arabis boivinii | ||
|authority=G. A. Mulligan | |authority=G. A. Mulligan | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis bourgovii | |name=Arabis bourgovii | ||
|authority=Rydberg | |authority=Rydberg | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis confinis | |name=Arabis confinis | ||
|authority=S. Watson | |authority=S. Watson | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis confinis var. brachycarpa | |name=Arabis confinis var. brachycarpa | ||
|authority=(Torrey & A. Gray) S. Watson & J. M. Coulter | |authority=(Torrey & A. Gray) S. Watson & J. M. Coulter | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis dacotica | |name=Arabis dacotica | ||
|authority=A. Nelson | |authority=A. Nelson | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis divaricarpa var. dacotica | |name=Arabis divaricarpa var. dacotica | ||
|authority=(Greene) B. Boivin | |authority=(Greene) B. Boivin | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis divaricarpa var. hemicylindrica | |name=Arabis divaricarpa var. hemicylindrica | ||
|authority=B. Boivin | |authority=B. Boivin | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis divaricarpa var. stenocarpa | |name=Arabis divaricarpa var. stenocarpa | ||
|authority=M. Hopkins | |authority=M. Hopkins | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis drummondii var. brachycarpa | |name=Arabis drummondii var. brachycarpa | ||
|authority=(Torrey & A. Gray) A. Gray | |authority=(Torrey & A. Gray) A. Gray | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Arabis holboellii var. brachycarpa | |name=Arabis holboellii var. brachycarpa | ||
|authority=(Torrey & A. Gray) S. L. Welsh | |authority=(Torrey & A. Gray) S. L. Welsh | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Boechera brachycarpa | |name=Boechera brachycarpa | ||
| − | |authority= | + | |authority= |
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Turritis brachycarpa | |name=Turritis brachycarpa | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Boechereae;Boechera;Boechera grahamii | |hierarchy=Brassicaceae;Brassicaceae tribe Boechereae;Boechera;Boechera grahamii | ||
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|elevation=100-3200 m | |elevation=100-3200 m | ||
|distribution=Alta.;B.C.;Man.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Colo.;Mich.;Minn.;Mont.;N.Y.;N.Dak.;S.Dak.;Vt.;Wash.;Wis.;Wyo. | |distribution=Alta.;B.C.;Man.;N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Colo.;Mich.;Minn.;Mont.;N.Y.;N.Dak.;S.Dak.;Vt.;Wash.;Wis.;Wyo. | ||
| − | |discussion=<p>Morphological evidence suggests that Boechera grahamii is an apomictic species that arose through hybridization between B. collinsii and B. stricta. Previous authors have assigned these specimens to Arabis (Boechera) divaricarpa (see M. D. Windham and I. A. Al-Shehbaz 2007b for detailed comparison); if these taxa are treated as conspecific, the name B. grahamii has priority.</p> | + | |discussion=<p>Morphological evidence suggests that <i>Boechera grahamii</i> is an apomictic species that arose through hybridization between <i>B. collinsii</i> and <i>B. stricta</i>. Previous authors have assigned these specimens to <i>Arabis</i> (<i>Boechera</i>) divaricarpa (see M. D. Windham and I. A. Al-Shehbaz 2007b for detailed comparison); if these taxa are treated as conspecific, the name <i>B. grahamii</i> has priority.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Boechera grahamii | name=Boechera grahamii | ||
| − | |||
|authority=(Lehmann) Windham & Al-Shehbaz | |authority=(Lehmann) Windham & Al-Shehbaz | ||
|rank=species | |rank=species | ||
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|publication year=2007 | |publication year=2007 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_534.xml |
|tribe=Brassicaceae tribe Boechereae | |tribe=Brassicaceae tribe Boechereae | ||
|genus=Boechera | |genus=Boechera | ||
Latest revision as of 22:34, 5 November 2020
Biennials or perennials; short-lived; apomictic; caudex present or absent. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, (1.2–)2–12 dm, glabrous or pubescent proximally, trichomes simple and sessile or subsessile, 2 or 3(–6)-rayed, to 1 mm, glabrous distally. Basal leaves: blade oblanceolate, 1.5–10(–20) mm wide, margins entire or dentate, ciliate proximally, trichomes (simple), to 1 mm, surfaces sparsely to densely pubescent, trichomes sessile or subsessile, 2–4(–7)-rayed, 0.2–0.6 mm. Cauline leaves: (10–)13–52, often concealing stem proximally; blade auricles 1–5 mm, surfaces of distalmost leaves glabrous. Racemes 16–88-flowered, usually unbranched. Fruiting pedicels divaricate-ascending to descending, usually gently curved downward, rarely straight, 5–22(–30) mm, glabrous. Flowers divaricate at anthesis; sepals glabrous or pubescent; petals usually white, rarely lavender, 5.5–8 × 1–2 mm, glabrous; pollen spheroid. Fruits divaricate-ascending to pendent, not appressed to rachis, not secund, straight or slightly curved, edges parallel, 3.5–9 cm × 1–1.8 mm; valves glabrous; ovules 84–146 per ovary; style 0.05–0.5 mm. Seeds uniseriate to sub-biseriate, 1–1.8 × 0.8–1.2 mm; wing continuous, 0.1–0.25 mm wide. 2n = 21.
Phenology: Flowering May–Aug.
Habitat: Rocky slopes and sandy soil in prairies and open forests
Elevation: 100-3200 m
Distribution
Alta., B.C., Man., N.W.T., Ont., Que., Sask., Yukon, Alaska, Colo., Mich., Minn., Mont., N.Y., N.Dak., S.Dak., Vt., Wash., Wis., Wyo.
Discussion
Morphological evidence suggests that Boechera grahamii is an apomictic species that arose through hybridization between B. collinsii and B. stricta. Previous authors have assigned these specimens to Arabis (Boechera) divaricarpa (see M. D. Windham and I. A. Al-Shehbaz 2007b for detailed comparison); if these taxa are treated as conspecific, the name B. grahamii has priority.
Selected References
None.