Mentzelia todiltoensis

N. D. Atwood & S. L. Welsh

W. N. Amer. Naturalist 65: 365, fig. 1. 2005.

Common names: Jemez Mountains blazingstar
EndemicConservation concern
Treatment appears in FNA Volume 12. Treatment on page 508. Mentioned on page 500.

Plants biennial or perennial, bushlike, with ground-level caudices. Stems solitary or multiple, erect, straight; branches distal, distal longest, antrorse, straight; hairy. Leaves: blade 41–121 × 1.5–40 mm, widest intersinus distance 1.1–3.3 mm; proximal oblanceolate, elliptic, or linear, margins entire or serrate to pinnatisect, teeth or lobes 0–26, slightly antrorse, (0.9–)2.4–18.6 mm; distal oblanceolate, elliptic, lanceolate, or linear, base not clasping, margins entire, serrate, or pinnatisect, teeth or lobes 0–22, slightly antrorse, 0.8–18 mm; abaxial surface with needlelike and occasionally simple grappling-hook and/or complex grappling-hook trichomes, adaxial surface with needlelike trichomes. Bracts: margins entire or pinnate. Flowers: petals light to golden yellow, (10.4–)11.7–24.6 × 1.8–5.1 mm, apex acute to rounded, glabrous abaxially; stamens light to golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 10–21 × 1.4–4 mm, without anthers, second whorl with anthers; anthers twisted or occasionally straight after dehiscence, epidermis papillate; styles 5.5–12.7 mm. Capsules cup-shaped to cylindric, 6.7–20.2 × 4.5–8.5 mm, base tapering or rounded, not longitudinally ridged. Seeds: coat anticlinal cell walls sinuous, papillae 6–12 per cell. 2n = 20.


Phenology: Flowering Jul–Oct.
Habitat: Hillside slopes, hilltops, hard gypsum-rich clayey soils.
Elevation: 1600–2200 m.

Discussion

Mentzelia todiltoensis occurs in northcentral New Mexico.

Selected References

None.

Lower Taxa

None.
... more about "Mentzelia todiltoensis"
John J. Schenk +  and Larry Hufford +
N. D. Atwood & S. L. Welsh +
Mentzelia +
Jemez Mountains blazingstar +
1600–2200 m. +
Hillside slopes, hilltops, hard gypsum-rich clayey soils. +
Flowering Jul–Oct. +
W. N. Amer. Naturalist +
Endemic +  and Conservation concern +
Mentzelia todiltoensis +
Mentzelia sect. Bartonia +
species +