Xyloselinum

No map specified
Authors: Pimenov & Kljuykov
Protologue: Komarovia 4: 125
Synonyms: No synonyms
Type species: Xyloselinum vietnamense
Type species authors: Pimenov & Kljuykov
Type species synonyms: No synonyms
Number of species: 2
Distribution: Asia (SE: Viet-Nam)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps or fruits free, not separating into mericarps; ovate or elliptic or lanceolate; with carpophore bifid to the base or carpophore obsolete; beak absent; mericarps homomorphic; glabrous; 6.5-7.5 mm long; 2.8-5.0 mm broad; strongly compressed dorsally; with primary ribs; dorsal ribs filiform; marginal ribs winged; mericarp ribs straight; with entire margin; calyx teeth prominent; short; triangular; stylopodia low conical or stylopodia conical; styles medium; recurved; cell borders indistinct; surface smooth; cuticle sparse striate; exocarp cells small; commissure broad, exocarp interrupted near edges of marginal ribs; inner fibrous mesocarp obsolete; mesocarp parenchyma partly composed of cells with lignified pitted walls; vascular bundles compact; situated in primary rib bases; vittae vallecular and commissural; solitary in furrows or 2–5 in each furrow; 4–10 on commissural side; rib sectetory ducts small, present in some ribs only; endocarp not lignified; crystals obsolete; endosperm flat, slightly convex or slightly concave on commissural side.

Note: parenchyma cells with lignified walls is situated only in marginal ribs СЭМ: Границы клеток неразличимы, поверхность более-менее ровная. кутикула расставленно струйчатая, ок. 5 крупных складок на 30 мкм.