No map specified
Authors: H.Wolff
Protologue: Notizbl. Bot. Gart. Berlin 9: 279
Synonyms: No synonyms
Type species: Tongoloa gracilis
Type species authors: H.Wolff
Type species synonyms: No synonyms
Number of species: 15
Distribution: Asia (E, Central)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous; 1.7-3.0 mm long; 1.2-2.0 mm broad; terete; with primary ribs; all primary ribs equal, filiform; mericarp ribs straight; calyx teeth prominent; short; triangular; stylopodia flat or stylopodia low conical; styles medium; recurved; cell borders distinct; cells isodiametric; anticlinal walls concave; outer cell walls convex; cuticle striate with straight striae or cuticle rugulate; exocarp cells small; commissure narrow, exocarp almost reaches carpophore; inner fibrous mesocarp obsolete; mesocarp parenchyma not lignified; vascular bundles compact; vittae vallecular and commissural; 2–5 in each furrow; 4–10 on commissural side; rib sectetory ducts small, present in some ribs only; endocarp not lignified; crystals obsolete; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: СЭМ: Границы клеток различимы, клетки изодиаметрические и удлиненные, антиклинальные стенки вдавленные, часто изогнутые, наружные стенки выпуклые, кутикула преимущественно морщинистая. местами струйчатая.