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.

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.

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 +
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 +