HANSENIA APICULATA 273 



SACCHAROMYCES LEMONNIERI. Sartory and Lasseur l 



Isolated from the sputum of a person with bronchitis and pul- 

 monary congestion, this yeast has round cells surrounded with a 

 thick capsule. It grows easily on most media. The optimum tem- 

 perature for growth is between 25 and 30 C. It vegetates quite well 

 at 37.5 C. but stops at 40 C. It forms a scum on glycerol bouillon. 

 The temperature limits for scum formation are, 15-20 C. and 37- 

 38 C. Asc formation has been obtained on plaster blocks, each asc 

 containing four spores which are spherical in shape (2.5-3 /*). On 

 carrot, development is rapid, a white thick colony being obtained. 

 On potato, the growth is scant. It is pathogenic for rabbits and 

 guinea pigs. 



Genus X. Hansenia. Lindner-Klocker 



HANSENIASPORA. Zikes 



Cells lemon shaped, with hemispherical ascospores, and provided 

 with a more or less projecting collar which gives them the appearance 

 of a hat. They germinate by ordinary budding. 



HANSENIA APICULATA. Lindner 2 

 Syn.: HANSENIOSPORA APICULATA. Zikes 



Reess has designated under the name Saccharomyces apiculatus a 

 yeast of peculiar shape characterized by the presence at one or both 

 ends of an oval cell, of a little point (nipple) rather long which causes 

 the cell to have an apiculate shape. Hansen 3 has found a yeast which 

 seems to correspond with that of Reess' to which he gave the same 

 name. This species is found in abundance on sugary fruits, in the 

 mucous secretions of trees, the nectar of flowers, etc. It is encountered 

 in the first phases of the wine fermentation. 



The cells are apiculate and generally have apiculate buds. Oval 

 cells with oval buds may also be obtained (Fig. 6). Under certain 



1 Sartory, A., and Lasseur, P. New pathogenic yeast (Saccharomyces lemon- 

 nieri. Comp. Rend. Soc. Biol. 78 (1915), 48-49. 



2 Lindner, P. Sporenbildung bei S. apiculatus. Woch. f. Brau. No. 42, 

 1903; Mikroskopische Betriebskontrolle in den Garungswerben, Paul Parey, 

 Berlin, 6th edition, 1909. 



3 Hansen, E. C. Recherches sur la physiologic et la morphologic des fer- 

 ments alcooliques. Sur le S. apiculatus et sa circulation dans la nature. Comp. 

 Rend, du labor, de Carlsberg, Vol. 1, Book 4, 1881. 



