

FIG. 28. i, Laboulbenia cristata, young perithecium with antheridia 

 above at the left. The darker axile cell the carpogonium, above it the 

 trichophoric cell terminated by the trichogyne, on which are several 

 antheridia ; 2, Laboulbenia Brachini, elongate form with exceptionally 

 simple appendages ; 3, Laboulbenia elongata, portion of a specimen treated 

 with potash and stained with eosin, slightly crushed so as to separate the 

 basal cells without destroying the ascus mass and the inferior supporting 

 cell. The protoplasmic portions of the cells only drawn to show the con- 

 tinuity between adjoining cells ; 4, spore of same showing two nuclei ; 5, 

 Sphaleromyces occidentalis, mature individual ; 6, Laboulbenia Philonthi. 

 All highly mag. (After Thaxter. ) 



