Malacothrix foliosa subsp. polycephala

W. S. Davis

Madroño 44: 237. 1997.

Common names: Many-head desertdandelion
Treatment appears in FNA Volume 19. Treatment on page 315. Mentioned on page 316, 317.
Revision as of 19:20, 29 July 2020 by imported>Volume Importer
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Stems usually 1, erect, branched distally. Distal cauline leaves narrowly triangular, usually pinnately lobed (near bases, lobes 1–2 pairs, narrow). Calyculi of 8–12+, oblong to linear bractlets. Involucres 5–7 × 2–4.5 mm. Phyllaries 12–16+ in 2–3 series. Corollas medium yellow, 5–9 mm; outer ligules exserted 1.5–3.5 mm. Cypselae ± cylindro-fusiform, 0.9–1.5 mm, ribs ± equal. 2n = 14.


Phenology: Flowering Mar–Jul.
Habitat: Open sandy areas, dunes, between shrubs in chaparral
Elevation: 0–100 m

Discussion

Subspecies polycephala is known only from San Nicolas Island.

Selected References

None.

Lower Taxa

None.

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

obtuse;acute or acuminate +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
W. S. Davis +
W. S. Davis +
decurrent +
compound +  and simple +
lanceolate;obovate oblanceolate or spatulate +
tuberculate +, rugose +, muricate +  and smooth +
oblong;linear +
subequal +  and unequal +
filiform +
Many-head desertdandelion +
zygomorphic +, actinomorphic +  and (3-)5-merous +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
crenate +
stramineous +  and brown or purplish brown +
cylindro-fusiform +
lobed +  and triangular +
0–100 m +
winged +  and beaked +
dispersed +
Open sandy areas, dunes, between shrubs in chaparral +
indeterminate +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
cauline +  and basal +
divided +, lobed +  and dentate +
0.05mm +  and 0.2mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
2-carpellate +
persistent +
Flowering Mar–Jul. +
connate +  and distinct +
12 +  and 16 +
subequal +  and unequal +
flat;more or less convex +
more or less equal or 5 more prominent +
crenate +
exalbuminous +
arachnose +  and glabrous +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Malacothrix foliosa subsp. polycephala +
Malacothrix foliosa +
subspecies +
70 cm700 mm <br />0.7 m <br /> (200 cm2,000 mm <br />2 m <br />) +
4 cm40 mm <br />0.04 m <br /> (45 cm450 mm <br />0.45 m <br />) +
shrub +  and subshrub +