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2. Garuga Roxburgh, Pl. Coromandel. 3: 5. 1811.
白头树属 bai tou shu shu
Trees or shrubs deciduous. Branchlet pith without vascular strands, pubescent. Leaves odd-pinnate, alternate, usually stipulate, crowded toward ends of branches; leaflets opposite, subsessile or with petiolule, serrate; stipels usually present. Flowers bisexual, in much-branched panicles, present before leaves, usually crowded toward end of branches, 5-merous; receptacle concave, globose or cupular. Sepals nearly free, deltoid, valvate. Petals inserted at edge of disk, valvate, apex incurved in bud, later recurved. Disk 10-grooved. Stamens 10, inserted in grooves at margin of disk; filaments subulate, base hairy; anthers oblong. Ovary subsessile or sessile, 4- or 5-celled; ovules 2 in each cell; style short; stigma capitate, shallowly 4- or 5-lobed. Drupe subglobose; pyrenes 1-5, small, bony, grooved. Seeds with membranous testa; cotyledons folded.
About four species: tropical Asia, N Oceania, and some Pacific islands; four species (one endemic) in China.
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| 1 |
Flowers 3-6 mm; drupe 5-10 × 5-12 mm |
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(2) |
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Flowers 6-10 mm; drupe 10-23 × (9-)11-18 mm |
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(3) |
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| 2 (1) |
Inflorescences densely tomentose; flowers ca. 3 mm; drupe ovoid, ± deltoid in cross section, base with persistent calyx. |
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1 G. forrestii |
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Inflorescences pubescent or glabrescent; flowers 4-6 mm; drupe subglobose, base without persistent calyx. |
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2 G. floribunda var. gamblei |
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| 3 (1) |
Rachis and leaflets sparsely pubescent with short hairs; flowers ca. 6 mm; ovary glabrous. |
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3 G. pierrei |
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Rachis and leaflets pubescent with long hairs, especially when young; flowers 7-10 mm; ovary sparsely pubescent. |
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4 G. pinnata |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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