Chrysolepis chrysophylla

(Douglas ex Hooker) Hjelmquist

Bot. Not., Suppl. 2(1): 117. 1948.

Common names: Giant golden chinkapin
Endemic
Basionym: Castanea chrysophylla Douglas ex Hooker Fl. Bor.-Amer. 2: 159. 1838
Synonyms: Castanopsis chrysophylla (Douglas ex Hooker) A. de Candolle
Treatment appears in FNA Volume 3.
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Trees or erect shrubs, to 45 m. Bark thick, rough. Twigs densely covered with tight, yellowish, peltate trichomes. Leaves: petiole 5-8 mm. Leaf blade flat or folded upward along midvein, margins entire, apex acute or acuminate, surfaces abaxially usually golden or brownish with dense glandular trichomes. Fruits: cupule yellowish, 20-60 mm thick, densely spiny, surface obscured; nut light brown, (6-)8-12(-15) mm, glabrous, completely enclosed by cupule until maturity.

Distribution

Calif., Oreg., Wash., only in the flora.

Discussion

Varieties 2: only in the flora.

The two varieties intergrade considerably where they are in contact.

Varieties 2

Selected References

None.

Key

1 Leaf apex acute or acuminate; trees or erect shrubs, bark thick, rough. Chrysolepis chrysophylla
1 Leaf apex obtuse, occasionally somewhat acute; low rhizomatous shrubs, bark thin, smooth. Chrysolepis sempervirens