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.
Revision as of 19:20, 29 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

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 +