Malacothrix indecora

Greene

Bull. Calif. Acad. Sci. 2: 152. 1886.

Common names: Santa Cruz Island desertdandelion
IllustratedEndemicConservation concern
Synonyms: Malacothrix foliosa var. indecora (Greene) E. W. Williams
Treatment appears in FNA Volume 19. Treatment on page 317. Mentioned on page 311.

Annuals, 2–12 (–45) cm. Stems usually 1, erect or ± prostrate, usually ± branched proximally (often forming mats, usually leafy throughout), glabrous. Cauline leaves: proximal obovate to spatulate, usually pinnately lobed (lobes 1–3+ pairs, nearly equal, apices obtuse), usually fleshy, ultimate margins entire, faces glabrous; distal not reduced (similar to others). Calyculi of 8–13+, lance-deltate to lanceolate bractlets (sometimes intergrading with phyllaries), hyaline margins 0.05–0.2 mm wide. Involucres ± campanulate, 6–8 × 2–6+ mm. Phyllaries 13–22+ in 2–3 series, (often red-tinged) oblong to lanceolate, hyaline margins 0.05–0.2 mm wide, faces glabrous. Receptacles glabrous. Florets 18–76; corollas medium yellow, 4–8 mm; outer ligules exserted 1–4 mm. Cypselae ± prismatic, 1.2–1.5 mm, ribs extending to apices, 5 more prominent than others; persistent pappi 0. Pollen 70–100% 3-porate. 2n = 14.


Phenology: Flowering Apr–Jul.
Habitat: Shallow soils of ocean bluffs, open rocky areas
Elevation: 0–30 m

Discussion

Of conservation concern.

Malacothrix indecora is found on San Miguel, Santa Cruz, and Santa Rosa islands.

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 indecora"
obtuse;acute or acuminate +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
W. S. Davis +
Greene +
decurrent +
compound +  and simple +
lanceolate;obovate oblanceolate or spatulate +
tuberculate +, rugose +, muricate +  and smooth +
lance-deltate;lanceolate +
subequal +  and unequal +
filiform +
Santa Cruz Island desertdandelion +
zygomorphic +, actinomorphic +  and (3-)5-merous +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
crenate +
stramineous +  and brown or purplish brown +
prismatic +
not reduced +
0–30 m +
winged +  and beaked +
dispersed +
Shallow soils of ocean bluffs, open rocky areas +
indeterminate +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
cauline +  and basal +
divided +, lobed +  and dentate +
0.05mm +  and 0.2mm +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2-carpellate +
persistent +
Flowering Apr–Jul. +
connate +  and distinct +
13 +  and 22 +
subequal +  and unequal +
Bull. Calif. Acad. Sci. +
flat;more or less convex +
more prominent +
crenate +
exalbuminous +
Illustrated +, Endemic +  and Conservation concern +
prostrate +  and erect +
appendaged +  and truncate +
papillate +
Malacothrix foliosa var. indecora +
Malacothrix indecora +
Malacothrix +
species +
12 cm120 mm <br />0.12 m <br /> (45 cm450 mm <br />0.45 m <br />) +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
shrub +  and subshrub +