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Castanea dentata (Marsh.) Borkh.
AMERICAN CHESTNUT
Life   Plantae   Dicotyledoneae   Fagaceae   Castanea

Castanea dentata
© Copyright Bobby Hattaway 2011 · 5
Castanea dentata

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Castanea dentata
© Copyright Bobby Hattaway 2011 · 5
Castanea dentata
Castanea dentata
© Copyright Bobby Hattaway 2011 · 5
Castanea dentata

Castanea dentata, bark - of a large tree
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, bark - of a large tree
Castanea dentata, bark - of a large tree
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, bark - of a large tree

Castanea dentata, leaf - showing orientation on twig
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, leaf - showing orientation on twig
Castanea dentata, leaf - whole upper surface
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, leaf - whole upper surface

Castanea dentata, twig - orientation of petioles
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, twig - orientation of petioles
Castanea dentata, twig - close-up winter leaf scar/bud
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, twig - close-up winter leaf scar/bud

Castanea dentata, bark - of a large tree
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, bark - of a large tree
Castanea dentata, fruit - section or open
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, fruit - section or open

Castanea dentata, fruit - section or open
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, fruit - section or open
Castanea dentata, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, inflorescence - whole - unspecified

Castanea dentata, inflorescence - lateral view of flower
© Copyright Steve Baskauf, 2002-2011 · 4
Castanea dentata, inflorescence - lateral view of flower
Castanea dentata
© Les Mehrhoff, 2008-2010 · 4
Castanea dentata

Associates · map
FamilyScientific name @ source (records)
Agaricaceae  Phoma castanea @ BPI (13)

Phoma eriophora @ BPI (1)

Phoma @ BPI (1)
Amphisphaeriaceae  Discosia artocreas @ BPI (2)

Pestalotia monochaeta @ BPI (2)
Annulatascaceae  Ceratostomella capillifera @ BPI (1)

Ceratostomella pluriannulata @ BPI (2)

Ceratostomella @ BPI (1)
Aphididae  Calaphis betulaecolens @ NCSU_ENT (18)
Arcyriaceae  Arcyria globosa @ BPI (1)
Boliniaceae  Camarops tubulina @ BPI (1)
Botryosphaeriaceae  Botryosphaeria castaneae @ BPI (1)

Dothiorella aquercina @ BPI (1)

Dothiorella quercina @ BPI (2)

Dothiorella ribis @ 363205B (1); BPI (3); 363205A (1)

Fusicoccum castaneum @ BPI (4)

Phyllosticta castaneae @ BPI (6)

Phyllosticta maculiformis @ BPI (12)

Phyllosticta @ BPI (1)

Sphaeropsis castaneae @ BPI (1)

Sphaeropsis malorum @ BPI (4)
Ceratocystidaceae  Ceratocystis castaneae @ BPI (1)

Ceratocystis microspora @ BPI (1)
Chaetosphaeriaceae  Sporoschisma mirabile @ BPI (4)
Chionosphaeraceae  Stilbum vulgare @ BPI (2)
Chlamydomonadaceae  Sphaerella maculiformis @ BPI (1)

Sphaerella sparsa @ BPI (1)
Coniocybaceae  Chaenotheca @ GAL (1)
Coniophoraceae  Coniophora olivacea @ BPI (2)
Corticiaceae  Corticium alutarium @ BPI (1)

Corticium atrovirens @ BPI (1)

Corticium galactinum @ BPI (3)

Corticium hydnans @ BPI (1)

Corticium investiens @ BPI (2)

Corticium lactescens @ BPI (1)

Corticium microsporum @ BPI (1)

Corticium notabile @ BPI (4)

Corticium polyporoideum @ BPI (1)

Corticium scutellare @ BPI (2)

Corticium sulphureum @ BPI (1)
Cortinariaceae  Gymnopilus flavidellus @ BPI (1)
Cottidae  Bolinia tubulina @ BPI (1)
Cronartiaceae  Cronartium californicum @ BPI (2)

Cronartium cerebrum @ BPI (25)

Cronartium conigenum @ BPI (5)

Cronartium fusiforme @ BPI (7)

Cronartium meineckii @ BPI (2)

Cronartium strobilinum @ BPI (3)
Cryphonectriaceae  Cryphonectria parasitica @ BPI (4)

Endothia fluens @ BPI (127)

Endothia gyrosa @ BPI (57)

Endothia parasitica @ BPI (314)

Endothia radicalis @ BPI (1)

Endothia @ BPI (1)
Cucurbitariaceae  Cucurbitaria parasitica @ 628600A (1); 628600B (1)
Dacrymycetaceae  Calocera cornea @ BPI (1)
Davidiellaceae  Cladosporium epiphyllum @ BPI (1)
Dermateaceae  Chlorosplenium aeruginascens @ BPI (2)

Chlorosplenium chlora @ BPI (1)

Chlorosplenium schweinitzii @ BPI (2)

Cylindrosporium castanicolum @ BPI (2)

Cylindrosporium ochroleucum @ BPI (5)

Dermea purpurascens @ BPI (1)

Dermea quercina @ BPI (1)

Discohainesia oenotherae @ 656071A (1); BPI (2); 656072B (1); 656073C (1); 656071C (1); 656071B (1); 656073B (1); 656072A (1); 656073A (1)

Gloeosporium castaneicola @ BPI (1)

Gloeosporium ochroleucum @ BPI (6)

Gloeosporium quercinum @ BPI (1)

Marssonia ochroleuca @ BPI (1)

Marssonina epiphyllum @ BPI (1)

Marssonina martinii @ BPI (1)

Marssonina ochroleuca @ BPI (81)

Pezicula acericola @ BPI (1)

Pezicula cinnamomea @ BPI (2)

Pezicula purpurascens @ BPI (8)

Pezicula @ BPI (1)
Diaporthaceae  Diaporthe leiphaemia @ BPI (1)

Diaporthe parasitica @ BPI (18)

Diaporthe tessera @ BPI (1)

Phomopsis castanea @ BPI (1)

Phomopsis @ 629179B (1); BPI (1)
Diatrypaceae  Diatrype albopruinosa @ BPI (1)

Diatrype disciformis @ BPI (3)

Diatrype stigma @ BPI (1)

Libertella betulina @ BPI (1)
Erysiphaceae  Microsphaera alni @ BPI (83)

Phyllactinia corylea @ BPI (22)

Phyllactinia guttata @ BPI (3)

Phyllactinia suffulta @ BPI (1)
Exidiaceae  Exidia glandulosa @ BPI (5)

Exidia recisa @ BPI (1)

Guepinia spathularia @ BPI (2)
Fenestellaceae  Fenestella phaeospora @ BPI (1)
Fistulinaceae  Fistulina hepatica @ BPI (36)
Fomitopsidaceae  Daedalea confragosa @ BPI (13)

Daedalea quercina @ BPI (25)

Daedalea unicolor @ BPI (1)
Ganodermataceae  Ganoderma applanatum @ BPI (1)

Ganoderma lucidum @ BPI (1)
Geastraceae  Sphaerobolus stellatus @ BPI (1)
Gnomoniaceae  Cryptosporella carnea @ BPI (1)

Gnomonia setacea @ BPI (1)

Ophiognomonia setacea @ BPI (1)
Helicinidae  Hendersonia @ BPI (1)
Helotiaceae  Cenangium furfuraceum @ BPI (1)

Durella compressa @ BPI (1)

Pezizella lythri @ 655915A (1); 655915C (1); 655915B (1)

Pezizella @ BPI (1)

Tympanis @ BPI (1)
Hyaloscyphaceae  Belonidium basitrichum @ BPI (1)

Dasyscyphella @ BPI (1)

Dasyscyphus chamaeleontina @ BPI (1)

Dasyscyphus translucidus @ BPI (3)

Dasyscyphus turbinulatus @ BPI (3)

Lachnum niveum @ BPI (1)

Trichopeziza aranea @ BPI (1); 660186A (1); 660186B (1)
Hymenochaetaceae  Hymenochaete episphaeria @ BPI (1)

Hymenochaete ferruginea @ BPI (1)

Hymenochaete rubiginosa @ BPI (30)

Hymenochaete tabacina @ BPI (1)

Polystictus sanguineus @ BPI (1)
Hypocreaceae  Hypocrea citrina @ BPI (3)

Hypocrea rufa @ BPI (1)

Hypocrea sulphurea @ BPI (2)

Hypomyces lactifluorum @ BPI (1)

Trichoderma lignorum @ BPI (1)
Hysteriaceae  Glonium parvulum @ BPI (2)

Glonium simulans @ BPI (7)

Glonium stellatum @ BPI (16)

Hysterium insidens @ BPI (1)

Hysterographium mori @ BPI (2)

Hysterographium variabile @ BPI (1)
Lachnocladiaceae  Vararia investiens @ BPI (1)

Vararia pallescens @ BPI (3)
Lasiosphaeriaceae  Bombardia fasciculata @ BPI (1)

Lasiosphaeria ovina @ BPI (1)
Lycoperdaceae  Lycoperdon pyriforme @ BPI (1)
Magnaporthaceae  Clasterosporium sigmoideum @ BPI (3)
Marasmiaceae  Armillaria mellea @ BPI (1)

Marasmius resinosus @ BPI (1)
Melanconidaceae  Coryneum castaneicola @ BPI (4)

Coryneum modonium @ BPI (1)

Coryneum pustulatum @ 404825A (1); 403892B (1); 403892A (1); 404827A (1); 404827B (1); 404825B (1); BPI (13)

Coryneum @ BPI (2)

Melanconis modonia @ 614840B (1); 614994A (1); 614840A (1); BPI (16); 614994B (1)

Melanconium cinctum @ BPI (4)
Melanommataceae  Aposphaeria brunneotincta @ BPI (2)

Melanomma pulvis-pyrius @ BPI (1)
Membracidae  Archasia auriculata @ UDCC_TCN (1)

Atymna castaneae @ NCSU (54); UDCC_TCN (7)

Atymna querci @ UDCC_TCN (4)

Cyrtolobus maculifrontis @ NCSU (1)

Ophiderma flava @ UDCC_TCN (1)

Platycotis vittata @ NCSU (12)

Telamona reclivata @ NCSU (1)
Meruliaceae  Merulius rufus @ BPI (1)

Merulius tremellosus @ BPI (1)

Phlebia radiata @ BPI (3)

Phlebia strigosozonata @ BPI (2)

Phlebia @ BPI (1)
Miridae  Reuteria querci @ AMNH_PBI (1)
Mycosphaerellaceae  Mycosphaerella maculiformis @ BPI (1)

Septoria castaneae @ BPI (1)

Septoria ochroleuca @ BPI (9)
Nectriaceae  Nectria cinnabarina @ BPI (6)

Nectria @ BPI (1)

Tubercularia @ BPI (1)
Niessliaceae  Melanopsamma eckfeldtii @ BPI (1)
Papilionidae  Graphium smaragdinum @ BPI (1)
Peniophoraceae  Peniophora burtii @ BPI (1)

Peniophora cinerea @ BPI (12)

Peniophora incarnata @ BPI (1)

Peniophora quercina @ BPI (3)

Peniophora setigera @ BPI (1)

Peniophora versiformis @ BPI (1)
Phanerochaetaceae  Ceraceomyces tessulatus @ BPI (1)

Phanerochaete laevis @ BPI (1)

Phanerochaete sanguinea @ BPI (2)
Physalacriaceae  Rhizomorpha @ BPI (2)
Pleomassariaceae  Helminthosporium macrocarpum @ 429656B (1); 429656A (1)

Helminthosporium persistens @ BPI (1)

Stegonsporium castaneae @ BPI (1)

Stegonsporium castaneicola @ BPI (1)
Pleosporaceae  Epicoccum @ BPI (1)
Pleurotaceae  Pleurotus applicatus @ BPI (1)
Polyporaceae  Favolus alveolarius @ BPI (2)

Fomes applanatus @ BPI (3)

Fomes conchatus @ BPI (1)

Fomes igniarius @ BPI (1)

Fomes ohiensis @ BPI (1)

Fomes zelandicus @ BPI (1)

Lentinus pelliculosus @ BPI (3)

Lenzites betulina @ BPI (3)

Lenzites corrugata @ BPI (3)

Lenzites trabea @ BPI (2)

Panus rudis @ BPI (2)

Panus stipticus @ BPI (8)

Polyporus albellus @ BPI (3)

Polyporus alutaceus @ BPI (1)

Polyporus balsameus @ BPI (3)

Polyporus berkeleyi @ BPI (1)

Polyporus biformis @ BPI (1)

Polyporus brumalis @ BPI (1)

Polyporus caesius @ BPI (1)

Polyporus cinnabarinus @ BPI (4)

Polyporus cinnamomeus @ BPI (1)

Polyporus croceus @ BPI (4)

Polyporus cupuliformis @ BPI (2)

Polyporus dependens @ BPI (1)

Polyporus fumosus @ BPI (2)

Polyporus giganteus @ BPI (1)

Polyporus gilvus @ BPI (6)

Polyporus hirsutus @ BPI (8)

Polyporus lacteus @ BPI (1)

Polyporus limbatus @ BPI (1)

Polyporus medullae @ BPI (1)

Polyporus nidulans @ BPI (2)

Polyporus pargamenus @ BPI (7)

Polyporus pocula @ BPI (5)

Polyporus pubescens @ BPI (1)

Polyporus sanguineus @ BPI (1)

Polyporus spraguei @ BPI (39)

Polyporus subcartilagineus @ BPI (1)

Polyporus sulphureus @ BPI (16)

Polyporus tulipiferus @ BPI (7)

Polyporus undosus @ BPI (2)

Polyporus versicolor @ BPI (10)

Polyporus @ BPI (1)

Poria ambigua @ BPI (1)

Poria candidissima @ BPI (2)

Poria contigua @ BPI (1)

Poria cremea @ BPI (1)

Poria cremor @ BPI (1)

Poria discolor @ BPI (1)

Poria ferrea @ BPI (1)

Poria ferruginosa @ BPI (1)

Poria lenis @ BPI (2)

Poria medulla-panis @ BPI (1)

Poria mutans @ BPI (6)

Poria overholtsii @ BPI (1)

Poria salmonicolor @ BPI (1)

Poria semitincta @ BPI (1)

Poria sericeo-mollis @ BPI (1)

Poria sericeomollis @ BPI (1)

Poria subacida @ BPI (18)

Poria tenuis @ BPI (2)

Poria undata @ BPI (1)

Poria unita @ BPI (2)

Poria versipora @ BPI (3)

Poria @ BPI (3)

Trametes malicola @ BPI (1)

Trametes sepium @ BPI (5)

Trametes serialis @ BPI (1)
Pythiaceae  Phytophthora @ BPI (1)
Reticulariaceae  Lycogala epidendrum @ BPI (2)
Rhytismataceae  Coccomyces dentatus @ BPI (1)

Lophodermium exaridum @ BPI (2)

Propolis faginea @ BPI (1)

Propolis versicolor @ BPI (1)
Rutstroemiaceae  Rutstroemia @ BPI (1)
Sarcosomataceae  Strumella coryneoidea @ BPI (5)
Schizophyllaceae  Schizophyllum commune @ BPI (5)
Sclerodermataceae  Scleroderma aurantium @ BPI (2)
Sclerotiniaceae  Botrytis vulgaris @ BPI (1)

Ciboria @ BPI (1)

Encoelia furfuracea @ BPI (1)

Monilia aureofulva @ BPI (1)

Monilia @ BPI (1)
Sebacinaceae  Sebacina caesiocinerea @ BPI (1)
Steccherinaceae  Irpex cinnamomeus @ BPI (2)

Irpex lacteus @ BPI (3)

Irpex tulipiferae @ BPI (3)

Irpex @ BPI (1)

Odontia albicans @ BPI (1)

Odontia arguta @ BPI (1)

Odontia barba-jovis @ BPI (1)

Odontia ciliolata @ BPI (1)

Odontia furfurella @ BPI (1)

Odontia hydnoides @ BPI (7)

Odontia lateritia @ BPI (1)

Odontia trachytricha @ BPI (1)

Odontia @ BPI (1)

Steccherinum ochraceum @ BPI (3)
Stereaceae  Stereum albobadium @ BPI (1)

Stereum complicatum @ BPI (2)

Stereum erumpens @ BPI (1)

Stereum fasciatum @ BPI (3)

Stereum frustulosum @ BPI (1)

Stereum gausapatum @ BPI (2)

Stereum hirsutum @ BPI (1)

Stereum ochraceoflavum @ BPI (2)

Stereum rameale @ BPI (10)

Stereum roseocarneum @ BPI (2)

Stereum spadiceum @ BPI (2)

Stereum umbrinum @ BPI (1)

Stereum versiforme @ BPI (3)

Stereum @ BPI (1)
Stictidaceae  Stictis mollis @ BPI (1)
Strophariaceae  Hypholoma sublateritium @ BPI (3)

Pholiota squarrosoides @ BPI (1)
Teichosporaceae  Teichospora inflata @ BPI (1)
Tremellaceae  Tremella lutescens @ BPI (1)
Trichocomaceae  Aspergillus @ BPI (1)
Tricholomataceae  Helotium citrinum @ BPI (1)

Helotium epiphyllum @ BPI (1)

Helotium @ BPI (2)
Trichosphaeriaceae  Brachysporium @ BPI (1)
Valsaceae  Cryptospora cinctula @ BPI (23); 629179A (1)

Cytodiplospora castaneae @ BPI (8)

Cytospora ambiens @ BPI (2)

Cytospora @ BPI (3)

Radulum orbiculare @ BPI (2)

Radulum spathulatum @ BPI (1)

Valsa ceratophora @ BPI (3)

Valsa coronata @ 700996B (1); 700996A (1); BPI (3)

Valsa leucostoma @ BPI (1)

Valsa pullula @ BPI (2)

Valsa @ BPI (1)

Winterella cinctula @ BPI (1)
Xylariaceae  Hypoxylon coccineum @ BPI (1)

Hypoxylon effusum @ BPI (1)

Hypoxylon fragiforme @ BPI (2)

Hypoxylon fuscum @ BPI (3)

Hypoxylon howeianum @ BPI (2)

Hypoxylon illitum @ BPI (1)

Hypoxylon insidens @ BPI (2)

Hypoxylon investiens @ BPI (1)

Hypoxylon punctulatum @ BPI (2)

Hypoxylon rubiginosum @ BPI (2)

Hypoxylon serpens @ BPI (4)

Hypoxylon truncatum @ BPI (2)

Nummularia bulliardii @ BPI (1)

Rosellinia aquila @ BPI (2)

Rosellinia corticium @ BPI (2)

Xylaria cornu-damae @ BPI (1)
_  Actinopelte dryina @ BPI (1)

Clithris quercina @ BPI (1)

Creonectria purpurea @ BPI (1)

Cytosporella carnea @ BPI (3)

Grandinia @ BPI (3)

Hypochnus fumosus @ BPI (1)

Hypochnus pallidofulvus @ BPI (1)

Hypochnus polyporoideus @ BPI (1)

Hypochnus subferrugineus @ BPI (1)

Leptothyrium castaneae @ BPI (4)

Melanops @ BPI (1)

Monochaetia desmazieri @ BPI (18)

Monochaetia kansensis @ BPI (2)

Monotospora megalospora @ BPI (1)

Mucronoporus gilvus @ BPI (1)

Myxosporium castaneum @ BPI (2)

Myxosporium @ BPI (1)

Naemaspora croceola @ BPI (1)

Naemaspora microspora @ BPI (3)

Pellicularia subcoronata @ BPI (1)

Phaeobulgaria inquinans @ BPI (1)

Porothelium fimbriatum @ BPI (3)

Propolidium glaucum @ BPI (1)

Sphaeronaema capillare @ BPI (1)

Sporidesmium antiquum @ BPI (3)

Sporidesmium insulare @ BPI (3)

Sporidesmium peziza @ BPI (1)

Stilbella ostracogena @ BPI (1)

Ustulina vulgaris @ BPI (1)

Valsaria exasperans @ BPI (1)

Valsaria insitiva @ 619111C (1); 619111B (1); BPI (3); 619111A (1)

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FNA | Family List | FNA Vol. 3 | Fagaceae | Castanea

1. Castanea dentata (Marshall) Borkhausen, Theor. Prakt. Handb. Forstbot. 1: 741. 1800.

American chestnut, châtaigner d'Amérique

Fagus-Castanea dentata Marshall, Arbust. Amer., 46. 1785

Trees , often massive, formerly to 30 m, now persisting mostly as multistemmed resprouts to 5-10 m because of widespread destruction by blight. Bark gray, smooth when young, furrowed in age. Twigs glabrous. Leaves: petiole (8-)10-30(-40) mm. Leaf blade narrowly obovate to oblanceolate, 90-300 × 30-100 mm, base cuneate, margins sharply serrate, each tooth triangular, gradually tapering to awn often more than 2 mm, apex acute or acuminate, surfaces abaxially often without stellate trichomes, appearing glabrous but with evenly distributed, minute, multicellular, embedded glands between veins and sparse, straight, simple trichomes concentrated on veins, stellate or tufted trichomes absent. Staminate flowers with conspicuous pistillodes, whitish or yellowish straight hairs in center of flower. Pistillate flowers 3 per cupule. Fruits: cupule 4-valved, enclosing 3 flowers/fruits, valves irregularly dehiscing along 4 sutures at maturity, spines of cupule essentially glabrous, with a few scattered simple trichomes; nuts 3 per cupule, obovate, 18-25 × 18-25 mm, flattened on 1 or both sides, beak to 8mm excluding styles.

Flowering summer (Jun-Jul). Previously common in rich deciduous and mixed forests, particularly with oak; 0-1200 m; Ont.; Ala., Conn., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

The American chestnut was one of the most important dominant forest trees of eastern North America prior to 1930. The nuts, sweet and edible, were a favorite confection in the eastern United States. The wood is light, strong, and resistant to decay; it was widely used for construction, furniture, and decorative trim. The bark was used for tanning leather.

Native Americans used various parts of the plants of Castanea dentata medicinally as a cough syrup and to treat whooping cough, for heart trouble, and as a powder for chafed skin (D. E. Moerman 1986).

After 1930, most populations of Castanea dentata were nearly destroyed by the chestnut blight, caused by the introduced fungus Cryphonectria parasitica (Murrill) M. E. Barr [= Endothia parasitica (Murrill) P. J. Anderson & H. W. Anderson]. While chestnuts persist in many localities, the plants are mostly resprouts that rarely, if ever, produce viable seed.

Virtually all known natural populations remain infected with the blight, and various studies continue in an effort to find ways to improve growth and vitality of infected trees. The species was widely planted outside of its native range (e.g., Illinois, Indiana, Iowa, Michigan, and Wisconsin), and some of these plantings remain blight-free because of their isolation. One particularly large grove was planted near West Salem, Wisconsin, in 1880, and continuing regeneration through seedlings has been documented (F. L. Paillet and P. A. Rutter 1989). Unfortunately, chestnut blight has recently been discovered in this isolated population and probably is extending to other isolated plantings in the west.

As part of the effort to introduce blight-resistant strains of the American chestnut, breeding programs have produced hybrids of Castanea dentata in various combinations with exotic species of chestnut. These hybrids are often extremely difficult to identify because they may derive from as many as three parents in complicated backcrosses. When identifying trees suspected of being introduced, one should be aware of the three most commonly cultivated exotic chestnut species, all of which have been collected as sporadic escapes or persistent waifs:

Castanea sativa Miller - Spanish chestnut

Leaf blade abaxially with sparse to dense covering of stellate hairs, also with conspicuous glands as in C . dentata . Petiole relatively long (30 mm or more).

Castanea mollissima Blume - Chinese chestnut

Twigs with spreading hairs. Leaf blade abaxially cobwebby-pubescent, without conspicuous foliar glands found in Castanea dentata . Resistant to blight and widely cultivated in the United States, where it occasionally escapes.

Castanea crenata Siebold & Zuccarini - Japanese chestnut

Leaf blade abaxially with minute, glandular, peltate scales mixed with dense, tangled tomentum. Vegetatively, this species may be difficult to distinguish from Castanea pumila ; C . crenata is typically a tree (as opposed to shrub), and it has three nuts per cupule in contrast to the solitary nut found in C . pumila .

Putative hybrids between Castanea dentata and C . pumila are known as C . × neglecta Dode. These are rather widespread and difficult to separate from C . pumila ; they tend to have few stellate trichomes and a greater proportion of glandular-bulbous trichomes on the leaves, along with intermediate leaf shape and size, and 1-2 nuts per cupule (G. P. Johnson 1988). The C . × neglecta hybrids are known from scattered localities in Louisiana (probably not native), Tennessee, North Carolina, Virginia, Pennsylvania, Maryland, and New Jersey.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Castanea+dentata&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Castanea+dentata&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2017-12-15 10:57:51 gmt
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