Contains 10 accepted taxa overall.

Characteristics
Carya Nutt.
HICKORY
Classification
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FAGALES
Carya
Citation
CARYA Nuttall, Gen. N. Amer. Pl. 2: 220. 1818, nom. cons. vs Hicorius Rafinesque 1817.
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TYPE: Carya tomentosa (Poiret) Nuttall 1818, typ. cons. (Juglans tomentosa Poiret 1798)
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Carya aquatica Water Hickory, Bitter Pecan
Carya carolinae-septentrionalis Carolina Shagbark Hickory, Carolina Hickory
Carya cordiformis Bitternut Hickory
Carya glabra Pignut Hickory
Carya illinoinensis Pecan
Carya myristiciformis Nutmeg Hickory
Carya ovalis Red Hickory
Carya ovata Common Shagbark Hickory
Carya pallida Sand Hickory, Pale Hickory
Carya tomentosa Mockernut Hickory, White Hickory
Identification Key
1.  Bud scales valvate; leaflets 5–13(17) (sect. Apocarya)
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1.  Bud scales imbricate; leaflets 3–9; (sect. Carya)
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2.  Lateral buds with paired lateral prophylls; leaflets 5–9(11), the underside with peltate scales, concentrated near margins of base and apex on fall specimens; fruit husks dehiscing to middle or slightly below; nuts rugulose
2.  Lateral buds with saclike prophyll; leaflets (5)9–13(17), the underside with peltate scales mainly lost by fall or at least not concentrated near margins of base and apex; fruit husks dehiscing to base; nuts smooth or verrucose
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3.  Bark exfoliating in long strips or platelike scales; lateral petiolules 0–2 mm; leaflets (5)9–11(13), margins serrate to entire, the midrib villous near base above; nuts compressed, angled, verrucose; seeds bitter
3.  Bark ridged or with appressed scales or exfoliating with small platelike scales; lateral petiolules 0–7 mm; leaflets (7)9–13(17), margins serrate, the midrib mostly glabrous above, rarely hirsute near base; nuts not compressed, not angled, smooth; seeds sweet
4.  Leaflets (5)7–9(11), the underside hirsute, with abundant unicellular, fasciculate, and multiradiate hairs; husks 4–13 mm thick; nuts strongly angled toward the apex
4.  Leaflets 3–7(9), the underside glabrous except near midrib, occasionally hirsute with unicellular and fasciculate hairs; husks 2–5 mm thick; nuts not strongly angled toward the apex
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5.  Leaflets (5–)7(9), the underside glabrate, with a dense covering of small 4-lobed, irregular, and round peltate scales in spring and the midrib hirsute near the base
5.  Leaflets 3–7(9), the underside with hairs in the vein axils, with a sparse to dense covering of small irregular and round peltate scales in spring, 4-lobed scales uncommon, and the midrib glabrate
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6.  Young tissues densely golden to rusty brown lepidote
6.  Young tissues sparsely tan, reddish, to dark brown lepidote
Genus Synonyms
Synonym Full Citation Basionym Type
No synonyms found.