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1. Exacum Linnaeus, Sp. Pl. 1: 112. 1753.
藻百年属 zao bai nian shu
Annuals. Stems branched, glabrous. Leaves opposite. Cymes axillary or terminal, paniculate. Flowers 4- or 5-merous. Calyx lobed nearly to base. Corolla rotate, lobes longer than tube. Stamens inserted at throat of corolla tube just below sinus between corolla lobes; anthers cylindric, 2-locular, dehiscing by apical pores. Ovary 2-locular. Capsules 2-valved, many seeded. Seed coat warty.
About 40 species: tropical Africa, tropical and subtropical Asia, Madagascar; two species in China.
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Stems narrowly winged; calyx 5-6 mm; corolla mauve-blue to lilac; anthers 5.5-6.5 mm |
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1 Exacum tetragonum |
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Stems terete; calyx 7-10 mm; corolla bright blue drying purplish pink; anthers (6.5-)8-10 mm |
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2 Exacum teres |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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