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orthotropous

   Also found in: Encyclopedia 0.01 sec.
or·thot·ro·pous  (ôr-thtr-ps)
adj. Botany
Growing straight, so that the micropyle is at the end opposite the stalk. Used of an ovule.

orthotropous [ɔːˈθɒtrəpəs]
adj
(Life Sciences & Allied Applications / Botany) (of a plant ovule) growing straight during development so that the micropyle is at the apex Compare anatropous
ThesaurusLegend:  Synonyms Related Words Antonyms
Adj.1.orthotropous - (of a plant ovule) completely straight with the micropyle at the apex
plant life, flora, plant - (botany) a living organism lacking the power of locomotion
campylotropous - (of a plant ovule) curved with the micropyle near the base almost touching its stalk


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Ovule: (0) orthotropous, bitegmic; (1) anatropous or hemianatropous, bitegmic; (2) anatropous, unitegmic (Davis, 1966; Palkovic, 1974; Orchard, 1975; Corner, 1976; Cronquist, 1981; Dahlgren & Thorne, 1984; Webb & Gornall, 1989; Kubitzki, 1993b).
[FIGURE 1 OMITTED] The seed is orthotropous because the hilum, the chalaza, and the micropyle are on a straight line.
 
 
 
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