|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Leaf leathery; margin entire or slightly wavy above middle; upper surface ± glabrous, green; lower surface golden, with densely spaced, minute, appressed scales; stipules generally deciduous
Staminate inflorescence simple, sometimes branched, stiff, solitary or clustered, ascending to erect
Pistillate inflorescence clustered below staminate inflorescence on same or separate stalk; flowers 13
Staminate flower: sepals generally 6, minute; stamens generally 810+
Pistillate flower: sepals generally 6, minute
Fruit: nuts 13, enclosed by spiny, bur-like involucre, ovoid to subspheric, ± angled, maturing in 2 years
Species in genus: 2 species: w North America
Etymology: (Greek: golden scale, from lower leaf surface)
Reference: [Hjelmqvist 1960 Bot Not 113:373380]
Asian Castanopsis has involucre with 7 free valves (5 outer, 2 inner separating 3 nuts).
Shrub or small tree < 6(10) m, evergreen
Leaf 26 cm; petiole 37 mm; blade generally oblong to obovate, ± leathery, tip obtuse to short-toothed, margin wavy to irregularly toothed, teeth ± obtuse, upper surface shiny and green to dull and bluish green, lower surface ± densely puberulent, becoming glabrous, dull, pale green
Fruit: maturing in 1 year; cup 1018 mm wide, 69 mm deep, bowl-shaped, scales ± tubercled; nut 2025 mm, oblong to ovoid, tip ± obtuse, shell glabrous inside
Ecology: Slopes, chaparral, woodland
Elevation: < 1600 m.
Bioregional distribution: Peninsular Ranges.
Hybrids, involving Q. cornelius-mulleri and Q. engelmannii , considered by Torrey as sp.
Shrub 26 m
Leaf: blade 1.84 cm
Elevation: 3002000 m.
Bioregional distribution: North Coast Ranges, Tehachapi Mountain Area, San Francisco Bay Area, South Coast Ranges, Southwestern California (except Channel Islands)
Distribution outside California: Baja California
Horticultural information: DRN, SUN: 1, 2, 3, 4, 5, 6, 7, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; STBL.