Basal Veins

Leaf blade without a pair of basal veins, abaxially very densely hairy; epicalyx lobes much longer than pedicels.

Leaf blade with one obvious pair of basal veins, abaxially not very densely hairy; epicalyx lobes as long as pedicels.

wax glands in axils of main basal veins, often also in other vein axils or also on nodes.

wax glands in axils of main basal veins, often also in other vein axils or on nodes.

leaf blade elliptic or oblong, leathery or papery, basal veins 3, margin denticulate.

basal veins 5, base rounded or nearly obliquely cordate, apex shortly acuminate.

Leaf blade with 3 main basal veins, abaxial surface persistently densely stellately tomentose; floral cup as long as capsule.

wax glands absent or in axils of main basal veins.

basal veins flat on both surfaces.

Trees. Leaves alternate; leaf blade basal veins 5-7, base cordate, margin entire.

basal veins 3-5, glanduliferous along midrib on abaxial surface.

Leaves alternate or opposite, petiolate, simple or palmately compound, basal veins 3--9.

petiole short; leaf blade basal veins 3-5, margin serrate or rarely lobed.

basal veins 5, abaxially nearly flat, adaxially inconspicuous.

Basal veins 5-7; inflorescences usually terminal, paniculate; petals 5.

Leaf blade palmately lobed or entire, basal veins 3 or more.

6 (5) Leaf blade usually ovate-elliptic, base more or less obliquely cordate, basal veins 5, petiole ca. 5 cm.

leaf blade ovate, usually hairy abaxially, basal veins 5-7, margin entire or serrulate, apex acute, sometimes 3-5-lobed.

basal veins prominent. Cymes axillary or terminal, (5- to) many flowered, often paniclelike;

Leaves alternate or opposite, petiolate, simple or palmately compound, basal veins 3--13, interstitial veins reticulate;

Sori 1-5 pairs borne on the lower surface of ultimate lobes at the end of basal veins;