Mentzelia procera

(Wooton & Standley) J. J. Schenk & L. Hufford

Madroño 57: 247. 2010.

Common names: Upright blazingstar
Basionym: Nuttallia procera Wooton & Standley Contr. U.S. Natl. Herb. 16: 150. 1913
Synonyms: Mentzelia pumila var. procera (Wooton & Standley) J. Darlington
Treatment appears in FNA Volume 12. Treatment on page 523. Mentioned on page 502, 524.

Plants biennial, usually candelabra-form, rarely bushlike. Stems solitary, erect, straight; branches distal or occasionally along entire stem, distal or proximal longest, antrorse, straight or upcurved; hairy. Leaves: blade 38.3–108 × 5.3–14.9 mm, widest intersinus distance 1.7–3.9 mm; proximal oblanceolate to elliptic, margins pinnate, lobes 14–22 (–26), perpendicular to leaf axis, 1.8–4.5 mm; distal elliptic to lanceolate, base not clasping, margins pinnate, lobes 6–18, perpendicular to leaf axis, 1.3–4.5 mm; abaxial surface with simple grappling-hook, complex grappling-hook, and occasionally needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes. Bracts: margins entire or toothed to pinnate. Flowers: petals light yellow, 9.5–16.8 × 3.4–5.6 mm, apex usually rounded, rarely acute, glabrous abaxially; stamens light yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 8.2–14.6 × 2.3–3.4 mm, without anthers, second whorl with anthers; anthers straight after dehiscence, epidermis smooth; styles 7.1–12.6 mm. Capsules cupshaped to cylindric, 9.8–18.8 × 5.2–7.3 mm, base tapering, not longitudinally ridged. Seeds: coat anticlinal cell-walls sinuous, papillae 28–68 per cell.


Phenology: Flowering Jul–Aug.
Habitat: Dry hillsides, roadcuts, roadsides, sandy, clayey, or silty soils.
Elevation: 1400–2500 m.

Distribution

V12 552-distribution-map.jpg

Ariz., Colo., N.Mex., n Mexico

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Mentzelia procera"
petaloid +  and heteromorphic +
0.82 cm8.2 mm <br />0.0082 m <br /> (1.46 cm14.6 mm <br />0.0146 m <br />) +
clawed +  and spatulate +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
Acute (?) +  and Rounded (?) +
John J. Schenk +  and Larry Hufford +
(Wooton & Standley) J. J. Schenk & L. Hufford +
ridged +  and tapering +
Nuttallia procera +
3.83 cm38.3 mm <br />0.0383 m <br /> (10.8 cm108 mm <br />0.108 m <br />) +
unlobed;lobed;orbiculate;obovate;unlobed;lobed;orbiculate;obovate;unlobed;lobed;orbiculate;obovate;oblanceolate;spatulate;linear;lanceolate;elliptic;ovate;cordate;deltate;hastate +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
widest;5.3mm;14.9mm +
upcurved +  and antrorse +
distal +  and occasionally +
0.98 cm9.8 mm <br />0.0098 m <br /> (1.88 cm18.8 mm <br />0.0188 m <br />) +
cupshaped +  and cylindric +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.73 cm7.3 mm <br />0.0073 m <br />) +
Upright blazingstar +
elliptic;lanceolate +
Ariz. +, Colo. +, N.Mex. +  and n Mexico +
1400–2500 m. +
curved +  and straight +
s--shaped +, clavate +, urceolate +, ovoid +, cylindric +, subcylindric +, lingulate +  and cup-shaped +
simple +  and complex +
Dry hillsides, roadcuts, roadsides, sandy, clayey, or silty soils. +
free +  and adnate +
unlobed +  and filiform +
cauline +  and basal +
perpendicular +
toothed +  and pinnate +
apical +, subapical +  and inferior +
perpendicular +  and oriented +
not elongating +
inconspicuous +
connate +  and distinct +
0.95 cm9.5 mm <br />0.0095 m <br /> (1.68 cm16.8 mm <br />0.0168 m <br />) +
spreading +  and erect +
hairy +  and glabrous +
Obovate (?) +, Oblanceolate (?) +, Elliptic (?) +, Ovate (?) +  and Spatulate (?) +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
Flowering Jul–Aug. +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
flattened +  and ovoid +
persistent +
lanceolate +  and narrowly ovate +
light yellow +
adnate +, free +  and distinct +
included +  and exserted +
straight +
papillate +
3-lobed +  and lingulate +
0.71 cm7.1 mm <br />0.0071 m <br /> (1.26 cm12.6 mm <br />0.0126 m <br />) +
Mentzelia pumila var. procera +
Mentzelia procera +
Mentzelia sect. Bartonia +
species +
dendritic +  and unbranched +
sinuous +  and straight +
plant +  and bushlike +