Xanthoselinum

No map specified
Authors: Schur
Protologue: Enum. Pl. Transsilv., 1866: 264, 281
Comments: "Xantholoselinum"
Synonyms: Taeniopetalum Bunge, nom. illeg., non Vis.
Type species: Xanthoselinum alsaticum
Type species authors: (L.) Schur
Type species synonyms: Peucedanum alsaticum L.
Number of species: 2
Distribution: Europe (W, Central, S, SE, E), Asia (N, the Caucasus, Middle)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; elliptic or lanceolate; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous; 5.6-6.5 mm long; 2.3-2.7 mm broad; strongly compressed dorsally; with primary ribs; dorsal ribs filiform; marginal ribs narrow-winged or marginal ribs winged; mericarp ribs straight; with entire margin; calyx teeth prominent; short; triangular; stylopodia low conical; styles short or 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 with small cones; cuticle striate with straight striae or cuticle rugulate or cuticle striato-knotted; exocarp cells small; commissure broad, exocarp interrupted near edges of marginal ribs; inner fibrous mesocarp obsolete; mesocarp parenchyma not lignified; vascular bundles compact; situated in primary rib bases; vittae vallecular and commissural; solitary in furrows; two on commissural side or 4–10 on commissural side; rib sectetory ducts large, present in all ribs; endocarp not lignified; crystals obsolete; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: exocarp penetrates up to middle part of marginal ribs on commissural side; viitae at commissural side - 3-4 СЭМ: На ребрах границы клеток неразличимы, поверхность продольно морщинистая. кутикула струйчатая. В ложбинках границы различимы, клетки изодиаметрические и удлиненные, антиклинальные стенки вдавленные, наружные выпуклые. куполообразные и с коническим бугорком, кутикула струйчатая, морщинистая, на конусах струйчато-узловатая.