Silaum

No map specified
Authors: Mill.
Protologue: Gard. Dict. ed. 4: unpaged
Synonyms: Silaus Bernh.
Type species: Silaum silaus
Type species authors: (L.) Schinz & Thell.
Type species synonyms: Peucedanum silaus L.
Number of species: 1
Distribution: Europe ( W, SW, S, Central, SE, E), Asia (N, the Caucasus, Middle, Central)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate or lanceolate; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous; 5.0-5.5 mm long; 3.2-3.5 mm broad; slightly compressed dorsally; with primary ribs; all primary ribs equal, keeled or all primary ribs equal, narrow-winged; mericarp ribs straight; with entire margin; calyx teeth obsolete; stylopodia low conical; styles long; recurved; cell borders indistinct; surface undulate; cuticle striate with straight striae or cuticle sparse rugulate; exocarp cells small; commissure narrow, exocarp almost reaches carpophore; inner fibrous mesocarp obsolete; mesocarp with continuous sclerenchyma layer; vascular bundles compact; situated medially in primary ribs; vittae obsolete in mature fruit; 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 неразличимы, поверхность на вершинах ребер продольно бороздчатая, в ложбинках волнистая, кутикула расставленно струйчатая и расставленно морщинистая.