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.

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
... more about "Chrysolepis chrysophylla"
acuminate +  and acute +
Kevin C. Nixon +
(Douglas ex Hooker) Hjelmquist +
Castanea chrysophylla +
pistillate +, capitate +  and spicate +
Giant golden chinkapin +
starchy +  and fleshy +
2-several-valved +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Calif. +, Oreg. +, Wash. +  and only in the flora +
pistillate +  and staminate +
1-seeded +  and winged +
in groups +  and enclosed +
multicellular +
spicate +  and staminate +
unlobed +  and lobed +
arranged +  and alternate +
toothed +  and entire +
separated +  and adjacent +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
light-brown +
(1-)3-several +
3-angled +  and rounded +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Bot. Not., Suppl. +
few-to-many +
anastomosing +  and branching +
distinct +
distinct +
brownish +  and golden +
Castanopsis chrysophylla +
Chrysolepis chrysophylla +
Chrysolepis +
species +
subglobose +  and ovoid +
distinct +
shrub +  and tree +