Aulacospermum

No map specified
Authors: Ledeb.
Protologue: Fl. altaica 4
Synonyms: No synonyms
Type species: Aulacospermum anomalum
Type species authors: No authors
Type species synonyms: No synonyms
Number of species: 15
Distribution: Asia (N, Central, Middle, SW), Europe (E)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate or elliptic; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous or covered by wart-like outgrowths; 2.7-7.0 mm long; 1.3-3.9 mm broad; terete; with primary ribs; all primary ribs equal, keeled or all primary ribs equal, winged; mericarp ribs straight or mericarp ribs wavy; with entire margin; calyx teeth prominent; short; triangular; stylopodia flat or stylopodia low conical or stylopodia conical; styles medium; recurved; cell borders distinct; cells isodiametric; anticlinal walls concave; outer cell walls convex or outer cell walls dome-shaped or outer cell walls palisade; cuticle sparse striate or cuticle striate with straight striae or cuticle rugulate; exocarp cells large; commissure narrow, exocarp almost reaches carpophore; inner fibrous mesocarp obsolete; mesocarp parenchyma not lignified; vascular bundles compact; situated in primary rib bases; vittae vallecular and commissural; solitary in furrows or 2–5 in each furrow; two on commissural side or 4–10 on commissural side; rib sectetory ducts obsolete; endocarp not lignified; crystals obsolete; endosperm with broad, shallow groove on commissural side or endosperm with broad, deep groove on commissural side; embryo with two cotyledons.

Note: СЭМ: Границы клеток различимы, клетки изодиаметрические, антиклинальные стенки вдавленные, наружные стенки на ребрах и бугорках куполообразные, в ложбинках куполообразные или столбчатые (папилла шириной с клетку). Кутикула на гребнях ребер расставленно-морщинистая, на склонах ребер, бугорках и в ложбинках струйчато-морщинистая.