Micropus californicus var. subvestitus

A. Gray in W. H. Brewer et al.

in W. H. Brewer et al., Bot. California 1: 335. 1876.

Common names: Silky cottonseed
Endemic
Treatment appears in FNA Volume 19. Treatment on page 456.

Plants 1–40 cm. Heads mostly 2–3 × 3–4.5 mm. Pistillate paleae thinly sericeous-lanuginose, longest usually 2–3 mm. Staminate corollas 1–1.5 mm. Cypselae 1.4–2.2 mm; pappi: staminate 0.9–1.3 mm.


Phenology: Flowering and fruiting late Apr–early Jun.
Habitat: Ridges, hilltops, slopes, relatively dry, shallow, exposed soils of various substrates (including serpentine), often recently disturbed, usually within coastal fog belt
Elevation: 50–1100 m

Discussion

Variety subvestitus is known from the southern San Francisco Bay area through outer southern Coast Ranges to San Luis Obispo County, plus populations in foothills of the central Sierra Nevada.

Selected References

None.

Lower Taxa

None.

"sericeous" is not a number. "lanuginose" is not a number.

truncate-penicillate;truncate +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
James D. Morefield +
A. Gray in W. H. Brewer et al. +
decurrent +
compound +  and simple +
narrowly oblanceolate;elliptic +
muriculate +, papillate +  and smooth +
galeate +
cartilaginous +  and bony +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Silky cottonseed +
red-tipped +, purplish +, yellow +  and whitish +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
gibbous +, obovoid +  and compressed +
50–1100 m +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
Ridges, hilltops, slopes, relatively dry, shallow, exposed soils of various substrates (including serpentine), often recently disturbed, usually within coastal fog belt +
racemiform +  and paniculiform +
singly +  and dichasiform +
indeterminate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
homogamous +  and heterogamous +
depressed-spheric +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
each +  and sessile +
inconspicuous +
sessile +  and petiolate +
rarely lanceovate +  and lanceolate +
2-carpellate +
erect +  and incurved +
sericeous-lanuginose +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
of 1 , more or less smooth bristle +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Flowering and fruiting late Apr–early Jun. +
subequal +  and unequal +
in W. H. Brewer et al., Bot. California +
paleate +  and epaleate +
0.5-0.8 times diams +
depressed-spheric +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
exalbuminous +
5 (?) +  and 10 (?) +
ascending +  and erect +
2 +  and 5 +
appendaged +  and truncate +
papillate +
Bombycilaena californica +
Micropus californicus var. subvestitus +
Micropus californicus +
variety +
1 cm10 mm <br />0.01 m <br /> (50 cm500 mm <br />0.5 m <br />) +
oblanceolate +