ecostateadj.
/iːˈkɒsteɪt/, /ᵻˈkɒsteɪt/, U.S. /iˈkɑsteɪt/ Botany.
Chiefly of the leaves of a moss: having no rib or costa.
ΚΠ
1821 A. B. Lambert Illustr. Genus Cinchona 7 Its small flowers and elliptical ecostate capsules, together with its very short style and other marks, readily distinguish it.
1898 Bryologist 1 89 These flagellæ bear minute ecostate leaves very different from those on the main plant.
1944 Bull. Torrey Bot. Club 71 215 The outer perichaetial leaves are spreading, from ovate to broad-lanceolate, and either ecostate or with a short costa.
2004 Rev. Paleobot. & Palynol. 129 97/1 Pleurocarpous mosses with ecostate leaves and prosenchymatous laminal cells must be placed into the Hypnaceae or Sematophyllaceae.
This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).
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adj.1821