Arctostaphylos manzanita subsp. laevigata

(Eastwood) Munz

Aliso 4: 95. 1958 ,.

Common names: Contra Costa manzanita
Endemic
Basionyms: Arctostaphylos laevigata Eastwood Leafl. W. Bot. 1: 76. 1933
Treatment appears in FNA Volume 8. Treatment on page 438. Mentioned on page 437.
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Plants killed by fire; burl absent; twigs glabrous or sparsely short-hairy. Leaf blades shiny green. Inflorescences: axis (few-branched), 1+ mm diam.; (branches to 15 mm in immature phase) Ovaries glabrous. Fruits glabrous. Stones distinct.


Phenology: Flowering winter–early spring.
Habitat: Chaparral, foothill woodlands
Elevation: 500-1100 m

Discussion

Subspecies laevigata is found on western (and possibly eastern) slopes of Mount Diablo, Contra Costa County. Plants resembling it occur in the southern North Coast Range in Napa and Solano counties but subtle features suggest that they are more closely allied with subsp. manzanita.

Selected References

None.

Lower Taxa

None.

V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
(Eastwood) Munz +
Arctostaphylos laevigata +
Contra Costa manzanita +
500-1100 m +
Chaparral, foothill woodlands +
Flowering winter–early spring. +
Undefined tribe Arbuteae +
Arctostaphylos manzanita subsp. laevigata +
Arctostaphylos manzanita +
subspecies +