Show Lower Taxa
Difference between revisions of "Mentzelia torreyi"
Proc. Amer. Acad. Arts 10: 72. 1874.
Common names: Torrey’s blazingstar
IllustratedEndemic
Treatment appears in FNA Volume 12. Treatment on page 530.
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Latest revision as of 19:12, 6 November 2020
Plants with ground-level or subterranean caudices. Stems 5–25 cm. Leaves: petiole absent; blade ovate or obovate, to 45 × 35 mm, intersinus distance 2–4 mm. Pedicels 0(–1.5) mm. Flowers: petals yellow to orange, narrowly spatulate to obovate, 4.5–17 × 1.2–5 mm, apex rounded; stamens 25–45, 7–21 mm; styles 7–18 mm. Capsules 3–7 × 3–4.5 mm. Seeds 3–9 per capsule, edges prominently to inconspicuously ridged. 2n = 28.
Distribution
Calif., Idaho, Nev.
Discussion
Varieties 2 (2 in flora).
In the phylogenetic study by L. Hufford et al. (2003), Mentzelia torreyi was recovered as the sister to the rest of the genus.
Selected References
None.
Key
| 1 | Petals 8–17 mm, yellow; longest stamens to 1 mm longer than petals. | Mentzelia torreyi var. torreyi |
| 1 | Petals 4.5–8 mm, orangish yellow, orange, or burnt orange; longest stamens usually much more than 1 mm longer than petals. | Mentzelia torreyi var. acerosa |