WorldFloraDB

Characteristics

Shrubs or small trees with 2-armed hairs. Young growth glabrous or hairy; hairs persistent or quickly glabrescent. Leaves sessile, sometimes cupped about stem, or with attenuate base resembling petiole, simple or compound, flat or terete, longitudinally grooved or not, toothed or entire; both surfaces similar; venation conspicuous or obscure. Inflorescence developing within a cone of involucral bracts or not, usually axillary, rarely from older wood or terminal, few-flowered umbelliform racemes on short rachis, sometimes many-flowered on elongated rachis. Flowers pedicellate, usually paired, straight or curved in bud. Tepals splitting to base or remaining fused and splitting adaxially only. Hypogynous gland semicircular or a curved flap, rarely absent. Pistil glabrous; ovary stipitate or subsessile, 2-ovulate; pollen presenter erect, oblique or lateral, discoid or conical with narrow or broad basal flange. Fruit a modified follicle, variously woody, often beaked, sometimes horned, usually tardily dehiscent; valves splitting fully or partly down one or both sides. Seed occupying whole valve or marginal, collateral, flattened on one side, with a distal to encircling wing clasped between valves.

Shrubs or small trees. Lvs alternate, terete to broadly flattened, sometimes with spiny apex. Fls axillary, bracteate, usually few to many in clusters, occasionally in globose heads, ☿, pedicellate. Perianth tube slender, straight at first but later curving back and usually the segments becoming free; limb ± globose. Anthers sessile in the concave perianth segments. Nectaries united to form a large or small horseshoe-shaped or completely annular gland. Ovary glabrous, usually shortly stipitate; ovules 2; style usually > perianth, curved and protruding from perianth slit in immature fl.; apex dilated, forming an oblique disc or lateral cone; stigma small, in centre of dilated style. Fr. a very woody, ± ovoid capsule splitting into 2 solid valves with flat inner faces. Seeds 2, with a broad terminal wing sometimes continuing down the upper and rarely the lower margin.

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Cultivation

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