Mentzelia longiloba var. chihuahuaensis

J. J. Schenk & L. Hufford

Madroño 57: 256. 2010.

Common names: Chihuahuan blazingstar
Treatment appears in FNA Volume 12. Treatment on page 520. Mentioned on page 524.

Leaves: blades 35–110 × 7.4–27.1 mm, widest intersinus distance 2.3–15.3 mm; proximal with margins dentate, teeth 12–20, perpendicular to leaf axis, 2.3–9 × 4–5 mm; distal with margins serrate to pinnate, teeth or lobes 10–14, slightly antrorse, 2.9–7.5 × 3.7–4.8 mm. Bracts: margins entire or pinnate. Flowers: petals 11.3–16.3 × 3.1–5.1 mm; 5 outermost stamens without anthers. Seeds 2.9–3.2 mm; seed-coat anticlinal cell-walls straight, papillae 4–6 per cell.


Phenology: Flowering Aug–Nov.
Habitat: Roadsides, sand dunes, dry clayey or sandy soils.
Elevation: 500–1600 m.

Distribution

V12 263-distribution-map.jpg

N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila)

Discussion

Selected References

None.

Lower Taxa

None.

No values specified.

petaloid +  and heteromorphic +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
1.04 cm10.4 mm <br />0.0104 m <br /> (1.78 cm17.8 mm <br />0.0178 m <br />) +
clawed +  and spatulate +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
Acute (?) +  and Rounded (?) +
John J. Schenk +  and Larry Hufford +
J. J. Schenk & L. Hufford +
ridged +, tapering +  and rounded +
Mentzelia +
3.5 cm35 mm <br />0.035 m <br /> (11 cm110 mm <br />0.11 m <br />) +
unlobed;lobed;orbiculate;obovate;unlobed;lobed;orbiculate;obovate;unlobed;lobed;orbiculate;obovate;oblanceolate;spatulate;linear;lanceolate;elliptic;ovate;cordate;deltate;hastate +
0.23 cm2.3 mm <br />0.0023 m <br /> (1.53 cm15.3 mm <br />0.0153 m <br />) +
widest;7.4mm;27.1mm +
upcurved +  and antrorse +
distal +  and along entire stem +
0.76 cm7.6 mm <br />0.0076 m <br /> (0.91 cm9.1 mm <br />0.0091 m <br />) +
cupshaped +  and cylindric +
0.57 cm5.7 mm <br />0.0057 m <br /> (0.92 cm9.2 mm <br />0.0092 m <br />) +
Chihuahuan blazingstar +
N.Mex. +, Tex. +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
500–1600 m. +
curved +  and straight +
s--shaped +, clavate +, urceolate +, ovoid +, cylindric +, subcylindric +, lingulate +  and cup-shaped +
simple +  and complex +
Roadsides, sand dunes, dry clayey or sandy soils. +
free +  and adnate +
unlobed +  and filiform +
cauline +  and basal +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
3.7mm;4.8mm +
pinnate +, entire +  and serrate +
toothed +  and pinnate +
apical +, subapical +  and inferior +
perpendicular +  and oriented +
not elongating +
inconspicuous +
0.72 cm7.2 mm <br />0.0072 m <br /> (0.89 cm8.9 mm <br />0.0089 m <br />) +
connate +  and distinct +
1.13 cm11.3 mm <br />0.0113 m <br /> (1.63 cm16.3 mm <br />0.0163 m <br />) +
spreading +  and erect +
hairy +  and glabrous +
Obovate (?) +, Oblanceolate (?) +, Elliptic (?) +, Ovate (?) +  and Spatulate (?) +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.51 cm5.1 mm <br />0.0051 m <br />) +
Flowering Aug–Nov. +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
flattened +  and ovoid +
persistent +
lanceolate +  and narrowly ovate +
Illustrated +
golden yellow +
adnate +, free +  and distinct +
included +  and exserted +
straight +
papillate +
3-lobed +  and lingulate +
1.09 cm10.9 mm <br />0.0109 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.85 cm8.5 mm <br />0.0085 m <br /> (1.09 cm10.9 mm <br />0.0109 m <br />) +
Mentzelia multiflora subsp. longiloba +
Mentzelia longiloba var. chihuahuaensis +
Mentzelia longiloba +
variety +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
antrorse +  and perpendicular +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
dendritic +  and unbranched +
sinuous +  and straight +
perennial +  and biennial +
plant +, candelabra-form +  and bushlike +