VOLUME LXX 



NUMBER i 



THE 



Botanical Gazette 



JULY 1920 



DEVELOPMENT OF CYATHUS FASCICULARIS, C. 



STRIATUS, AND CRUCIBULUM VULGARE 1 



Leva B. Walker 



(with plates i-vi and three figures) 



A number of years ago when looking up literature on Gastero- 

 mycetes, the writer was impressed by the fact that no researches 

 upon the development of any of the Nidulariaceae had been 

 published since the classic papers of Tulasne (9), Sachs (8), 

 Eida&i (4), Brefeld (i), and DeBary (2, 3). From time to time, 

 therefore, as suitable stages were found, the materials for these 

 studies have been collected. 



Cyathus fascicularis Schw, 2 



Materials for the study of this form were collected largely in 

 the various commercial greenhouses of Lincoln, Nebraska, where 

 the fungus grows very abundantly during the late winter and 

 early spring upon the wooden flats in which bulbs are planted for 

 forcing. The mycelium is usually well developed upon the flats 

 at the time they are taken from the storage cellars, and the basid- 

 iocarps usually mature at about the same time as the flowering of 



1 Contribution from the Department of Botany, University of Nebraska, New 

 Series, no, 32. 



2 Material of this species was sent to Dr. E. A. Burt of the Missouri Botanical 

 Garden for determination. He says: "It is certainly C. fascicularis Schw., which 

 differs from the European specimens of C. olla Pers. in our herbarium in not having its 

 sporangiales radiately rugose on the side attached to the funiculus. Although this 

 difference is constant in all specimens examined, it is probably too slight for an adequate 

 specific difference." (C. olla Pers. = C verrucosus DC.) 



