No map specified
Authors: Pimenov
Protologue: No protologue
Synonyms: No synonyms
Type species: Autumnalia botschantzevii
Type species authors: Pimenov
Type species synonyms: No synonyms
Number of species: Not specified
Distribution: No distribution
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous; 6.0-8.5 mm long; 4.0-5.0 mm broad; strongly compressed dorsally; with primary ribs; dorsal ribs inconspicuous; marginal ribs narrow-winged or marginal ribs thickened; mericarp ribs straight; with entire margin; calyx teeth obsolete; stylopodia low conical; styles medium; recurved; cell borders indistinct; surface longitudinally rugate or surface foveolate-tuberculate; cuticle smooth or cuticle sparse striate; exocarp cells small; commissure broad, exocarp interrupted near edges of marginal ribs; inner fibrous mesocarp obsolete; mesocarp parenchyma not lignified; vascular bundles compact; situated medially in primary ribs; vittae vallecular and commissural; solitary in furrows; two on commissural side; rib sectetory ducts small, present in all ribs; endocarp not lignified; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: СЭМ: Границы клеток неразличимы, поверхность ребер продольно бороздчатая и продольно морщинистая, в ложбинках продольно морщинистая и ямчато-бугорчатая, на крыле ямчато-бугорчатая. Кутикула гладкая или рассеянно морщинистая.