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.
Revision as of 07:36, 30 July 2020 by imported>Volume Importer
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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
... 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 +