Malacothrix fendleri

A. Gray

Smithsonian Contr. Knowl. 5(6): 104. 1853.

Common names: Fendler’s desertdandelion
Treatment appears in FNA Volume 19. Treatment on page 314. Mentioned on page 312.

Annuals, 3–15 (–25+) cm. Stems (1–) 3–8, ± decumbent or spreading-ascending, branched proximally and distally, glaucous or glabrous. Cauline leaves: proximal elliptic to oblong-oblanceolate, sometimes pinnately lobed (lobes 2–4+ pairs, oblong to triangular, unequal, apices acute), not fleshy, ultimate margins usually dentate, faces glabrous; distal reduced (narrowly triangular to linear or filiform, margins dentate or entire). Calyculi of 5–12, ovate to lanceolate bractlets, hyaline margins 0.05–0.2 mm wide. Involucres ± campanulate, 7–10 × 5–6+ mm. Phyllaries 13–25+ in 2–3 series, lance-oblong or lanceolate to lance-linear, subequal, hyaline margins 0.05–0.3 mm wide, faces glabrous. Receptacles not bristly. Florets 16–88; corollas yellow (usually with red or purplish abaxial stripes), 6–14 mm; outer ligules exserted 5–8 mm. Cypselae ± cylindric, 1.8–2.4 mm (distal 0.3 mm slightly expanded, cupped, smooth), ribs not extending to apices, ± equal; persistent pappi of 12–15, ± deltate teeth (often hidden within cups at apices of cypselae) plus 1–2 bristles. Pollen 70–100% 3-porate. 2n = 14.


Phenology: Flowering Mar–Jun.
Habitat: Grasslands, pinyon-juniper woodlands, creosote bush associations
Elevation: 80–2200 m

Distribution

V19-467-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Baja California), Mexico (Sonora)

Discussion

Malacothrix fendleri grows in the Sonoran Desert. “San Bernardino Co.” as locality for a specimen from the herbarium of J. G. Lemmon in UC (336493) is evidently an error.

Selected References

None.

Lower Taxa

None.

"fine" is not a number."]" is not declared as a valid unit of measurement for this property.

... more about "Malacothrix fendleri"
obtuse;acute or acuminate +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
W. S. Davis +
A. Gray +
decurrent +
compound +  and simple +
lanceolate;obovate oblanceolate or spatulate +
tuberculate +, rugose +, muricate +  and smooth +
less deltate or lanceolate;linear or subulate +
subequal +  and unequal +
filiform +
Fendler’s desertdandelion +
zygomorphic +, actinomorphic +  and (3-)5-merous +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
crenate +
stramineous +  and brown or purplish brown +
cylindric +
Ariz. +, N.Mex. +, Tex. +, Mexico (Baja California) +  and Mexico (Sonora) +
80–2200 m +
winged +  and beaked +
dispersed +
Grasslands, pinyon-juniper woodlands, creosote bush associations +
indeterminate +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
cauline +  and basal +
divided +, lobed +  and dentate +
0.05mm +  and 0.3mm +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2-carpellate +
persistent +
Flowering Mar–Jun. +
connate +  and distinct +
13 +  and 25 +
Smithsonian Contr. Knowl. +
flat;more or less convex +
crenate +
exalbuminous +
1 (?) +  and 3 (?) +
spreading-ascending +  and decumbent +
glabrous +  and glaucous +
3 +  and 8 +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Malacothrix fendleri +
Malacothrix +
species +
deltate +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
shrub +  and subshrub +