Micropus californicus var. californicus

Common names: Cottontop
Illustrated
Treatment appears in FNA Volume 19. Treatment on page 456.

Plants 1–50 cm. Heads mostly 3–4 × 4.5–6 mm. Pistillate paleae densely and loosely lanuginose, longest usually 3–4 mm. Staminate corollas 1.3–2 mm. Cypselae 1.8–2.6 mm; pappi: staminate 1.3–1.5 mm.


Phenology: Flowering and fruiting mid Mar–early Jul.
Habitat: Slopes, flats, dry or seasonally moist soils of various substrates (including serpentine), often recently disturbed, in grasslands, chaparral, wooded areas, clearings, mostly inland from coastal fog belt
Elevation: 10–1600 m

Distribution

V19-756-distribution-map.gif

Calif., Oreg., Mexico (Baja California)

Discussion

Variety californicus is known nearly throughout the west-draining portion of the Californian Floristic Province and the Willamette Valley, from western Oregon to northwestern Baja California, including the California Channel Islands and Isla Guadalupe.

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 +
Fischer & C. A. Meyer +
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 />) +
Cottontop +
red-tipped +, purplish +, yellow +  and whitish +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
gibbous +, obovoid +  and compressed +
Calif. +, Oreg. +  and Mexico (Baja California) +
10–1600 m +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
Slopes, flats, dry or seasonally moist soils of various substrates (including serpentine), often recently disturbed, in grasslands, chaparral, wooded areas, clearings, mostly inland from coastal fog belt +
racemiform +  and paniculiform +
singly +  and dichasiform +
indeterminate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
homogamous +  and heterogamous +
depressed-spheric +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
each +  and sessile +
inconspicuous +
sessile +  and petiolate +
rarely lanceovate +  and lanceolate +
2-carpellate +
erect +  and incurved +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
of 1 , more or less smooth bristle +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Flowering and fruiting mid Mar–early Jul. +
subequal +  and unequal +
Index Seminum (St. Petersburg) +
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 +
Illustrated +
5 (?) +  and 10 (?) +
ascending +  and erect +
2 +  and 5 +
appendaged +  and truncate +
papillate +
Bombycilaena californica +
Micropus californicus var. californicus +
Micropus californicus +
variety +
1 cm10 mm <br />0.01 m <br /> (50 cm500 mm <br />0.5 m <br />) +
oblanceolate +