Mediasia

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Authors: Pimenov
Protologue: Nov. Sist. Vyssh. Rast. 11: 254
Synonyms: No synonyms
Type species: Mediasia macrophylla
Type species authors: (Regel & Schmalh.) Pimenov
Type species synonyms: Seseli macrophyllum Regel & Schmalh.
Number of species: 1
Distribution: Asia (Middle, SW: Afghanistan)
Bibl.: No bibliography
No illustration specified

Features: fruits separating into mericarps; ovate or lanceolate; with carpophore bifid to the base; beak absent; mericarps homomorphic; densely hairy; 6.0-7.0 mm long; 2.0-2.6 mm broad; slightly compressed dorsally; with primary ribs; all primary ribs equal, filiform or all primary ribs equal, keeled; mericarp ribs straight; with entire margin; calyx teeth prominent; short; triangular; stylopodia low conical; styles medium; recurved; cell borders indistinct; surface longitudinally rugate; cuticle striate with straight striae; cuticle on hairs rugulate or cuticle on hairs tuberculate; exocarp cells small; commissure intermediate; inner fibrous mesocarp obsolete; mesocarp parenchyma partly composed of cells with lignified pitted walls or most of mesocarp composed of cells with lignified pitted walls; vascular bundles compact; vittae vallecular and commissural; solitary in furrows; two on commissural side; rib sectetory ducts small, present in some ribs only; endocarp not lignified; endosperm flat, slightly convex or slightly concave on commissural side; embryo with two cotyledons.

Note: СЭМ: На ребрах границы клеток неразличимы, поверхность продольно бороздчатая, кутикула струйчатая. В ложбинках –нет фото. Волоски 50-200 мкм длиной – сильно и слабо сплюснутые, с острой верхушкой, кутикула бугорчатая и морщинистая.