The Male Gametophyte of Dacrydium

descriptionPublicationkeyboard_double_arrow_right Article 01 Sep 1907 English Publisher:University of Chicago PressJournal:Botanical Gazette, volume 44, pages 189-196 (issn: 0006-8071,

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Authors: Young, Mary S.;

doi: 10.1086/329316

The Male Gametophyte of Dacrydium

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Abstract

1. There are two prothallial cells cut off from the main body of the spore. In Dacrydium Bidwillii usually only the second divides; in D. laxifolium and D. cupressinum both divide. 2. The generative cell divides by an anticlinal wall, one daughter cell functioning as a body cell and the other being sterile. In some cases both produce body cells. 3. The walls of the prothallial cells and the two generative daughter cells disappear. 4. The mature pollen grain contains the body cell and five or six free nuclei, according as the first prothallial cell has or has not divided.

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