Sclerosciadium

No map specified
Authors: W.D.J.Koch ex DC.
Protologue: Coll. Mem. 5 (Mem. fam. Ombellif.): 43
Synonyms: No synonyms
Type species: Sclerosciadium humile
Type species authors: W.D.J.Koch ex DC.
Type species note: nom. illeg.
Type species synonyms: Oenanthed nodiflora Schousb., Sclerosciadium nodiflorum (Schousb.) P.W.Ball
Number of species: 1
Distribution: Africa (N, NW)
Bibl.: No bibliography
No illustration specified

Features: fruits free, not separating into mericarps; ovate or orbicular or elliptic; with entire carpophore; beak absent; mericarps homomorphic; glabrous; 2.8-3.2 mm long; 1.7-2.0 mm broad; terete; with primary ribs; dorsal ribs keeled; marginal ribs thickened; mericarp ribs straight; with entire margin; calyx teeth prominent; equal to stylopodium; lanceolate or triangular; stylopodia conical; styles medium; spreading; cell borders distinct; cells isodiametric; anticlinal walls concave; outer cell walls convex or outer cell walls dome-shaped; cuticle rugulate; exocarp cells small; commissure intermediate; inner fibrous mesocarp obsolete; most of mesocarp composed of cells with lignified pitted walls; vittae vallecular and commissural; solitary in furrows; two on commissural side; rib sectetory ducts obsolete; endocarp not lignified; crystals obsolete; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: dorsal ribs thickened, inflate, larger than marginal (also inflate); calyx teeth hardened; lignified parenchyma cells in ribs only with thick walls (sclerenchyma?); vascular bundles composed of several (up to 6) isolated groups, situated at rib bases СЭМ: Границы клеток различимы, клетки изодиаметрические, разного размера, от 20 до 50 мкм, антиклинальные стенки вдавленные, наружные периклинальные слегка выпуклые или куполообразные. Кутикула морщинистая.