Tilingia

No map specified
Authors: Regel
Protologue: Nouv. Mem. Soc. Imp. Nat. Mosc. 11: 97
Synonyms: No synonyms
Type species: Tilingia ajanensis
Type species authors: Regel & Tiling
Type species synonyms: Cnidium ajanense (Regel & Tiling) Drude
Number of species: 4
Distribution: Asia (N, E), N America (Alaska)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate; with carpophore bifid to the base; beak absent; mericarps homomorphic; glabrous; 3.0-5.0 mm long; 1.5-2.5 mm broad; slightly compressed dorsally; with primary ribs; dorsal ribs narrow-winged; marginal ribs narrow-winged; mericarp ribs straight; with entire margin; calyx teeth prominent; short or equal to stylopodium; lanceolate; stylopodia conical; styles medium; recurved; cell borders distinct; cells isodiametric or cells elongated; anticlinal walls concave; outer cell walls convex; cuticle striate with straight striae; 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; situated in primary rib bases; vittae vallecular and commissural; 2–5 in each furrow; 4–10 on commissural side; rib sectetory ducts obsolete; endocarp not lignified; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: marginal ribs slightly broader than dorsal ones; parenchyma cells with pitted lignified valls are situated only in rib bases СЭМ: Границы клеток различимы, клетки изодиаметрические и удлиненные, расположены продольными рядами. Антиклинальные стенки вдавленные, наружные слегка выпуклые. Кутикула струйчатая. переходит через поперечные границы клеток.