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Castanea
Family: Fagaceae
Castanea image
Paul Rothrock  
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Kevin C. Nixon in Flora of North America (vol. 3)
Trees or shrubs , winter-deciduous, sometimes rhizomatous. Terminal buds absent, pseudoterminal bud (axillary bud of youngest leaf) ovoid, with 2 unequal opposite outer scales enclosing several imbricate inner scales. Leaves: stipules prominent on new growth, soon deciduous. Leaf blade thin, somewhat leathery, secondary veins unbranched, ±parallel, extending to margin, each vein ending in sharp tooth or well-developed awn. Inflorescences staminate or androgynous, axillary, spicate, erect, rigid or flexible; androgynous inflorescences with pistillate cupules/flowers toward base and staminate flowers distally. Staminate flowers: sepals distinct; stamens 12(-18), typically surrounding indurate pistillode covered with silky hairs. Pistillate flowers 1-3 per cupule; sepals distinct; carpels and styles typically 6(-9). Fruits: maturation in 1st year following pollination (termed annual by many authors); cupule 2-4-valved, valves connate marginally until maturity, ±completely enclosing nut(s), spiny, spines irregularly branched, often interlocking, densely or sparsely covered in simple hairs; nuts 1-3 per cupule, plano-convex, or if 3, then central nut often reduced and flattened, or if solitary, then often rounded in cross section, not winged, adjacent nuts not separated by internal cupule valves. x = 12. As evidenced by United States breeding programs, all species are probably interfertile (including American × Asian species). Local morphologic intergradation between species is to be expected.

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Show all taxa
Castanea alabamensis
Image of Castanea alabamensis
Castanea alnifolia
Image of Castanea alnifolia
Castanea ashei
Image of Castanea ashei
Castanea bungeana
Image of Castanea bungeana
Castanea crenata
Image of Castanea crenata
Castanea dentata
Image of Castanea dentata
Castanea dentata x castanea mollissima
Image of Castanea dentata x castanea mollissima
Castanea floridana
Image of Castanea floridana
Castanea formosana
Image of Castanea formosana
Castanea henryi
Image of Castanea henryi
Castanea japonica
Images
not available
Castanea mollissima
Image of Castanea mollissima
Castanea neglecta
Image of Castanea neglecta
Castanea ozarkensis
Image of Castanea ozarkensis
Castanea pubinervis
Images
not available
Castanea pumila
Image of Castanea pumila
Castanea sativa
Image of Castanea sativa
Castanea seguinii
Image of Castanea seguinii
Castanea stricta
Images
not available
Castanea vesca
Image of Castanea vesca
Castanea vulgaris
Image of Castanea vulgaris
Castanea x neglecta
Image of Castanea x neglecta
The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)