Amischotolype Hassk. (1863: 391)

Amischotolype Hassk. (1863: 391) View in CoL ( Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 ).

Lectotype (designated by Pichon (1946)):— Amischotolype glabrata Hassk. (1863: 392)

Synonyms:— Forrestia A.Rich. (1834: 1) . Type species: F. hispida A.Rich. (1834: 2) ; Porandra D.Y. Hong (1974: 462) . Type species: Porandra ramosa D.Y. Hong (1974: 462) .

Perennial herbs, scrambling or rhizomatous with erect stems. Roots moderately thick. Leaves spirally arranged. Inflorescence a very compacted head and globose or lax with 1–4 flowers, perforating the leaf sheaths. Flowers bisexual, subsessile to pedicellate. Sepals free, succulent, thick, subequal, boat-shaped. Petals free, equal, not clawed. Stamens 6, all fertile, equal; filaments bearded; anthers basifixed, longitudinal or poricidal dehiscent. Fruit a capsule, 3-locular, 3-valved, locules (1–)2-seeded. Seeds arillate; embryotega circular, lateral; hilum prominently linear, in a ventral irregular deep groove.

This genus comprises approximately 28 species distributed in the paleotropics, mainly in Asia, with a few species in Africa. Thirteen species occur in Thailand. Amischotolype gracilis (Ridl.) I.M.Turner (1993: 53) is presented here as a new record for Thailand. Distribution maps of all Thai Amischotolype species are provided ( Figures 4–5 View FIGURE 4 View FIGURE 5 ). The indument of the internodes, nodes, leaf sheaths, and upper surface and margin of the leaf blade, the inflorescence position, number of flowers per inflorescence, the length and indument of the sepals, the length and shape of the anthers, and the shape, size, and indument of the capsules have all proven useful in the delimitation of Thai Amischotolype species. The species may be distinguished using the following key: