Show Lower Taxa
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.
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 |
"not elongating" is not a number.
... more about "Mentzelia torreyi"
monomorphic +
outer +
epigynous +
dehiscing +
rounded +
long +
broad +
absent +
obovate;ovate +
straight +
subterranean +
Torrey’s blazingstar +
ridged +
symmetric +
bisexual +
dehiscing +
longer +
simple +
alternate +
dentate +
revolute +
distal +
absent +
parietal +
parallel +
oriented +
1;60 +
0 cm0 mm <br />0 m <br /> (?) +
inconspicuous +
epigynous +
differentiated +
symmetric +
persisting +
4.5mm;17mm +
absent +
3-carpellate +
parietal +
5 cm50 mm <br />0.05 m <br /> (?) +
Proc. Amer. Acad. Arts +
1874 +
polygonal +
winged +
3;9 +
symmetric +
green +
persisting +
persistent +
connate +
shorter +
longitudinal +
symmetric +
fertile +
petaloid +
absent +
papillate +
absent +
Mentzelia torreyi +
Mentzelia sect. Micromentzelia +
species +
pointed +
stinging +
sinuous +
anticlinal +
wide +
perennial +