Key to Juglandaceae

View taxon page for Juglandaceae

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Inflorescence pendent in fruit, of 15–50 2-winged nutlets, not enclosed in husk; fruit body (except wings) 6–9 mm diam; main axis of 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

± winged (at least below 

leaflet 

A leaf-like unit of a compound leaf; distinguished from a leaf by the absence in its axil of a bud, branch, thorn, or flower; lacking lateral, basal appendages (stipules); either simple (leaf 1-compound, with primary leaflets) or compound (leaf 2-compound, with primary and secondary leaflets; 3-compound, with primary, secondary, and tertiary leaflets, etc).

attachment distally) ..... [Pterocarya stenoptera]

1' Inflorescence 

erect 

Upright; vertically oriented.

in fruit, of 1–3 unwinged nuts, enclosed in leathery husk, fruit (including husk) 2–5 cm diam; main axis of leaf not winged

2. Twig centers not chambered; staminate inflorescences clustered, ± 

sessile 

Without a petiole, peduncle, pedicel, or other kind of stalk.

, stamens 3–10(15) per flower; fruit husk splitting longitudinally, separating from fruit ..... CARYA

2' Twig centers chambered; staminate inflorescence solitary, sessile, stamens 15–40 per flower; fruit husk not splitting, not separating from fruit ..... JUGLANS

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