Difference between revisions of "Mentzelia laciniata"

(Rydberg) J. Darlington

Ann. Missouri Bot. Gard. 21: 173. 1934.

Common names: Cut-leaf blazingstar
Endemic
Basionym: Touterea laciniata Rydberg Bull. Torrey Bot. Club 31: 565. 1904
Treatment appears in FNA Volume 12. Treatment on page 517. Mentioned on page 501, 516.
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|name=Touterea laciniata
 
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|genus=Mentzelia
 
|genus=Mentzelia
 
|section=Mentzelia sect. Bartonia
 
|section=Mentzelia sect. Bartonia

Revision as of 18:14, 24 September 2019

Plants biennial, bushlike or candelabra-form. Stems solitary, erect, straight; branches distal or along entire stem, distal or proximal longest, antrorse, straight; hairy. Leaves: blade 52–112 × (5.4–)8.3–25 mm, widest intersinus distance 1.4–4 mm; proximal oblanceolate or elliptic, margins pinnatisect, lobes 8–20, slightly antrorse, 4.2–7.4(–10.7) mm; distal oblanceolate, elliptic, or lanceolate, base not clasping, margins usually pinnatisect, sometimes pinnate, especially near apex, lobes 8–18, slightly antrorse, 3–10.8 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with needlelike trichomes. Bracts: margins usually entire, rarely pinnate. Flowers: petals golden yellow, 14–23.8(–26) × 3.8–7.4 mm, apex acute to rounded, glabrous abaxially; stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate to elliptic, slightly clawed, 12–20.4 × 2.5–4.9 mm, usually without, rarely with, anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 9.2–17.7 mm. Capsules cylindric, 12–20.2 × 4.5–8.1 mm, base tapering, not longitudinally ridged. Seeds: coat anticlinal cell walls sinuous, papillae 5–14 per cell. 2n = 20.


Phenology: Flowering Jun–Sep.
Habitat: Dry hillsides, roadcuts, roadsides, sandy or clayey soils.
Elevation: 1400–2300 m.

Discussion

Mentzelia laciniata is found in southwestern Colorado and northwestern New Mexico, where it does not extend as far west as the Chuska Mountains.

Selected References

None.

Lower Taxa

None.
... more about "Mentzelia laciniata"
John J. Schenk +  and Larry Hufford +
(Rydberg) J. Darlington +
Touterea laciniata +
Cut-leaf blazingstar +
Colo. +  and N.Mex. +
1400–2300 m. +
Dry hillsides, roadcuts, roadsides, sandy or clayey soils. +
Flowering Jun–Sep. +
Ann. Missouri Bot. Gard. +
Mentzelia laciniata +
Mentzelia sect. Bartonia +
species +