aposporyn.
/əˈpɒspəri/ Botany.
Absence or suppression of spores where they are normally produced, as in certain ferns, mosses, and other cryptogams in which the sexual organism (prothallus in ferns, etc., or perfect plant in mosses) is developed directly from the sporangium or from the leaf instead of from a spore. (Cf. apogamy n.)
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > producing spores
apospory1884
heterospory1898
1884 Jrnl. Linn. Soc.: Bot. 21 360 (title) On Apospory in Ferns.
1886 S. H. Vines in Encycl. Brit. XX. 431/2 By the suppression either of the sexually produced spore or of the asexually produced spore; the former is an instance of apogamy, the latter of apospory.
Derivatives
aˈposporously adv.
ΚΠ
1892 Athenæum 12 Nov. 667/3 Prothalli developed aposporously.
aˈposporous adj. characterized by or of the nature of apospory.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [adjective] > not having spores
aposporous1878
1878 S. H. Vines in Jrnl. Bot., Brit. & Foreign 16 361 To indicate..that no spores are..produced..by the sporophore of Chara, we may speak of this plant as being ‘aposporous’.
1886 Encycl. Brit. XX. 431/2 In the aposporous Ferns and Mosses and in the Characeæ the oophore is developed as a bud from the sporophore.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2019).
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n.1878