SUMMARY
1. | Two fungi of the genus Nidula have been studied in single-spore culture for the first time. These are the North American species N. candida and N. microcarpa. | ||||
2. | Both species display the tetrapolar heterothallic pattern of sexuality as do all other members of the Nidulariaceae studied up to the present time. | ||||
3. | The characteristics of the mycelia of Nidula appear to indicate a closer relationship to Crucibulum and Nidularia than to Cyathus. | ||||
4. | N. candida and N. microcarpa display four major differences in the growth habits of their mycelia. |