“placodioid”的英文意思_释义_用法

单词

placodioid

释义

placodioid, a. Bot.|pləˈkəʊdɪɔɪd|
[f. generic name Placodium (E. Acharius 1794, in Kungl. Vetenskapsakad. Handlingar XV. 248), f. as placode + -oid.]
Of a lichen thallus, disc-shaped, with plicate lobes at the circumference.
1911A. L. Smith Monogr. Brit. Lichens II. 362 Placodioid, like the genus Placodium, with the thallus orbicular, adpressed, lobed at the circumference.1921[see effigurate a.].1970U. K. Duncan Introd. Brit. Lichens 148 B[uellia] canescens... Thallus white to grey, usually darker and arcolate in the centre, lighter and placodioid towards the circumference.

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