Boutique, R. (1972) Gentianaceae Flore d'Afrique Centrale (Zaire - Rwanda - Burundi) Jardin Botanique National de Belgique
Annual or perennial herbs. Stems 4-ridged. Leaves well-developed. Flowers 4-5-merous in lax few-many-flowered cymes, rarely solitary. Calyx 4-5-lobed, tube very short. Corolla 4-5-lobed with a very short tube, lobes with 1-2 basal glandular nectaries within. Stamens 4-5, anthers without glands (in ours). Ovary ellipsoid, 1-locular. Stigma 2-lobed. Capsule septicidally 2-valved. Seeds numerous. Worldwide: 50 species in northern temperate zones, Africa and Malesia DRC: 7 taxa. |
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| Species | Botanical divisions | Content |
| brownii J.Shah | VIII,IX,XI | |
| eminii Engl. | VIII,IX,XI | |
| erosula N.E.Br. | IX | |
| macrosepala Gilg subsp. macrosepala | IX | |
| quartiniana A. Rich. | XI | |
| usambarensis Engl. [Agg] | IX | |
| welwitschii Engl. | VIII,XI | Description, Image |