Fischer, E. (1999) Scrophulariaceae Flore d'Afrique Centrale (Congo-Kinshasa, Rwanda & Burundi) Jardin Botanique National de Belgique, Bruxelles
Marsh or aquatic, perennial herbs, glabrous, tufted, creeping or floating. Plants stemless or with slender stolon-like stems rooting at the nodes. Leaves petiolate, usually basal, sometimes fasciculate at the nodes, rarely alternate, erect or floating; lamina linear, spathulate or oblong-ovate. Flowers solitary, axillary, borne on peduncles which are usually shorter than the leaves, and are often deflexed in fruit. Calyx (4-)5-lobed. Corolla: limb 5-lobed, spreading; lobes subequal. Stamens 4, didynamous. Ovary 2-locular; ovules many. Fruit a 2-valved, ovoid or spherical capsule, almost indehiscent. Worldwide: c. 11 species, mainly in temperate and cooler regions but also on tropical mountains DRC: 1 taxon. |
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