Difference between revisions of "Saxifraga bronchialis"
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Revision as of 23:42, 5 November 2020
Plants mat-forming, (stems trailing), not stoloniferous, rhizomatous. Leaves basal and cauline, (marcescent, crowded); petiole absent; blade (sometimes reddish), linear or linear-lanceolate to narrowly elliptic, unlobed, 3–15 mm, leathery, margins entire, stiffly, often hooked, white-ciliate, sometimes also glandular-ciliate, apex acute, white spinulose-mucronate (spine 1–1.5 mm), surfaces glabrous, sometimes adaxially sparsely sessile-glandular. Inflorescences 2–15-flowered cymes or thyrses, sometimes solitary flowers, 5–20 cm, sparsely short stipitate-glandular; bracts sessile. Flowers: sepals ± erect, (purplish), ovate to triangular, margins eciliate or sparsely glandular, surfaces glabrous or sparsely sessile-glandular; petals yellowish white, purple- or red- to yellow-spotted, oblong to elliptic, 3–7 mm, longer than sepals; ovary superior.
Distribution
Alta., B.C., N.W.T., Yukon, Alaska, Colo., Idaho, Mont., N.Mex., Oreg., Utah, Wash., Wyo., Eurasia, arctic and alpine areas.
Discussion
Subspecies 4 (2 in the flora).
The Saxifraga bronchialis complex, including S. cherlerioides, S. taylorii, S. tricuspidata, and S. vespertina, needs a thorough study.
Saxifraga firma Litvinov ex Losina-Losinskaja has been cited for North America; the name belongs in synonymy of a Eurasian subspecies and appears to have been misapplied to North American specimens.
Selected References
None.
Key
| 1 | Petals yellow-spotted, distinctly clawed. | Saxifraga bronchialis subsp. funstonii |
| 1 | Petals yellow-spotted proximally, purple- or red-spotted distally, not clawed. | Saxifraga bronchialis subsp. austromontana |