“exannulate”的英英意思

单词	exannulate
释义	exannulate, a. Bot.|ɛksˈænjʊlət| [f. ex- priv. + annul-us + -ate2.] Having no annulus or ring round the sporangium, as certain ferns; opposed to annulate. 1861Bentley Bot. 369 Those in which the ring is absent are said to be exannulate.1880Gray Struct. Bot. x. §2. 361 Not dehiscent, exannulate.

　

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