Berula

No map specified
Authors: W.D.J.Koch
Protologue: Roehl., Deutsch. Fl., 1826 2: 25, 433
Synonyms: Berla Bubani, Siella Pimenov, nom. illeg., non Vologdin
Type species: Berula erecta
Type species authors: (Huds.) Coville
Type species synonyms: No synonyms
Number of species: 2
Distribution: Europe, Asia, Africa, N America, C America, Australia & Oceania (adv.)
Bibl.: No bibliography
No illustration specified

Features: fruits free, not separating into mericarps; ovate or orbicular; carpophore obsolete; beak absent; mericarps homomorphic; glabrous; 1.5-2.0 mm long; 1.5-1.8 mm broad; terete; with primary ribs; all primary ribs equal, filiform; mericarp ribs straight; with entire margin; calyx teeth obsolete; stylopodia low conical; styles medium; recurved; cell borders distinct or cell borders indistinct; surface irregularly rugate; cells isodiametric or cells elongated; anticlinal walls convex; outer cell walls concave; cuticle sparse striate; exocarp cells small; commissure narrow, exocarp almost reaches carpophore; inner fibrous mesocarp obsolete; mesocarp parenchyma partly composed of cells with lignified pitted walls; vascular bundles compact; vittae cyclic; rib sectetory ducts obsolete; endocarp not lignified; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: СЭМ: Границы клеток большей частью неразличимы, поверхность на ребрах продольно морщинистая, в ложбинках беспорядочно морщинистая. кутикула расставленно струйчатая. Местами заметны границы, клетки изодиаметрические и удлиненные, 15-20 мкм шириной, 20-40 мкм длиной, антиклинальные стенки выпуклые, наружные периклиналььные вогнутые.