Distylium Siebold & Zucc.

Genus

Angiosperms > Saxifragales > Hamamelidaceae

Characteristics

Shrubs or small tress, evergreen; branches with 1 prophyll, stellately pubescent or lepidote when young; buds naked. Leaves distichous (rarely spiral), shortly petiolate; stipules caducous, leaving small scars; leaf blade leathery, margin entire or shallowly toothed towards leaf apex, venation pinnate; lateral veins usually prominent abaxially. Plants andromonoecious. Inflorescence a condensed panicle or botryoid, flowers distichously (or rarely spirally ) arranged, axillary, ± sessile; each flower usually subtended by two (simple or 3-lobed) subopposite sepal-like bracteoles, sometimes lacking in male flowers. Flowers male or bisexual. Floral cup absent. Sepals and petals absent. Male flowers: stamens 1–8, filaments short, unequal, anthers ellipsoid, thecae 2-sporangiate, each dehiscing by a longitudinal slit, connective produced. Bisexual flowers: stamens 5–8, ovary superior, ovules 1 per locule; stigmas decurrent. Fruits distichously (or rarely spirally) arranged, sometimes pedicellate. Capsules ovoid-globose, woody, stellately tomentose, dehiscing above middle by two 2-lobed valves, apex acute. Seeds 1 per locule, narrowly ovoid. 2n = 24.
More
Evergreen polygamous-monoecious trees or shrubs. Leaves entire or denticulate above the middle, penninerved. Stipules small, caducous, leaving small scars. Flowers in headlike spikes or racemes, free, sustained by 0-2 groups of 3(-2) lanceolate small bracts. Calyx and petals lacking. Stamens in ♀ flowers lacking, in ☿ or ♂ flowers 1-8; filaments of varying length, subulate; anthers basifix, ellipsoid, with 4 pollen sacs, 2-celled, dehiscing laterally with 2 longitudinal slits; connective apiculate. Staminodes lacking. Disk lacking. Ovary in male flowers lacking, in ☿ and female flowers superior, 2-celled, each cell with 1 pendent ovule; styles 2, subulate, divergent; adaxially with decurrent papillose stigmas. Fruits free, 2-celled, 2-or 4-valved, woody; endocarp loosening from the exocarp. Seeds 1 in each cell, oblong to ovoid, wingless; albumen present.
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Growth form shrub
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Foliage retention evergreen
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Hardiness (USDA) 8-12

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