|Author||Nuttall 1842 N. Amer. Sylv. 1: 18|
|Synonyms||dumosa var. elegantula (Greene)
x macdonaldii var. elegantula Greene 1889
|Local names||California scrub oak ; coastal scrub oak ; scrub oak ; Nuttal's scrub oak ; el chaparral ; " chaps " ;|
|Range||California ; Mexico (North of Baja California); from Pacific coasts to 300 m ;|
|Growth habit||not exceeding 3 m; crown rounded, as if pruned; branches stiff;|
|Leaves||1-2.5 x 0.6-1.5 cm; semi-evergreen, stiff, thick; elliptic or oblong; pointed, base rounded to sometimes cuneate; margins wavy, entire or with sometimes 3-9 shallow lobes or teeth (if present, the teeth are sometimes spiny); shiny green, nearly hairless above ; pale and densely pubescent beneath, with stellate trichomes showing large rays visible without lens; petiole 1-4 mm;|
|Flowers||March to April;|
|Fruits||acorn 1.2-2.5 cm; narrowly ovoid, elongated, pointed, enclosed 1/3 or 1/4 by cup; cup subsessile (3 mm long stalk), scaly; matures in 1 year; kernel very bitter but edible;|
Bark, twigs and
|bark dark brown, scaly; twig reddish grey; bud red brown, globose, glabrous, 1-2 mm;|
|Hardiness zone, habitat||a little tender (but withstands -14°C); prefers dry soils;|
Sub-genus Quercus, Section Quercus, Subsection Dumosae;
-- A. Camus n° 176;
-- Threatened (IUCN Red List Category : EN).
-- Hybrids with Q.lobata and Q.engelmannii are put together under the name Q.x kinseliae ;
-- The term "Q.dumosa" has been applied to almost all the scrubby oaks of California; but 5 species have been separated as true species : Q.turbinella, Q.john-tuckeri, Q.cornelius-mulleri, Q.berberidifolia and Q.pacifica; the "true" Q.dumosa is a quite rare species, restricted to low elevations; it differs from other scubby oaks essentially in having large, visible hairs on the leaves undersides.
For Trelease: numerous formas... it would be better
to consider it as an ecotype of Q.durata.
it would be better to consider it as an ecotype of Q.durata.
-- In Sta Catalina Island, a species is now separated from Q.dumosa, and from Q.berberidifolia, and is today considered as a true species : Q.pacifica Nixon et C.H.Muller