anatropous

American  

[uh-na-truh-puhs] / əˈnæ trə pəs /

adjective

Botany.

1. (of an ovule) inverted at an early stage of growth, so that the micropyle is turned toward the funicle and the embryonic root is at the opposite end.

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anatropous British  

/ əˈnætrəpəs /

adjective

1. (of a plant ovule) inverted during development by a bending of the stalk (funicle) attaching it to the carpel wall Compare orthotropous

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Etymology

Origin of anatropous

First recorded in 1840–50; ana- + -tropous

Example Sentences

Seeds anatropous, with a small straight embryo, in copious albumen.—Nearly passing into the following order.

From Project Gutenberg

The superior ovary is generally one-chambered, with two variously developed parietal placentas, which occasionally meet, forming two chambers; the ovules are generally very numerous and anatropous or half-anatropous in form.

From Project Gutenberg

Fig. 348-352 show the stages through which an ovule becomes anatropous in the course of its growth.

From Project Gutenberg

Sedum acre L. Seed light, reddish-yellow, somewhat glossy, obovate to oblong, pointed at the base, slightly anatropous, compressed, 6–7 mm. long.

From Project Gutenberg

No inversion can, therefore, really take place in anatropous ovules, but the blade of the leaf is bent back on the funicle, with which its margins also cohere.

From Project Gutenberg