HOTSON. 



culturf: studies of fi xcii. 207 



and ne\or, so far us the writer has ohscrxcd, lia\c any iiidiciitions 

 been seen of the deveh)pnu'nt of "spore balls," or jieritheeia such as 

 have been described by Hilfen. 



BASIDIOMYCETOUS FORMS. 



As has already been mentioned (p. 238), bulbils were first reported 

 among the Basidiomycetes by Lyman ('07), who not only definitely 

 connected one form with Corfiriiun (tliifdccuiit (Schrader) lin'sadola, 

 which is dealt with briefly below, but also refers to two other kinds of 

 bulbils, the mycelia of which have well marked damp-connections; 

 but basidiosporic fructifications were not produced abundantly 

 enough to allow of their identification. Dr. Lyman has kindly 

 supplied the writer with specimens of these forms for the purpose of 

 comparison, which will be referred to under their respective species. 



The methods used here were much the same as those already de- 

 scribed, except that more gross cultures of wood were used with 

 different amounts of moisture. The best results were obtained from 

 decoctions of bran in one or two litre Erlenmeyer flasks with pieces of 

 rotten wood that extended consi(leral)ly above the liquid, so that the 

 mycelium could ol)tain the degree of moisture that best suited it. 



In order to keep the pieces of wood in place and thus lessen the 

 chances of contamination a quantity of agar was sometimes put in 

 the bottom of the flasks. 



Grandinia crustosa (Pers.) Fr. 

 Plate 6, Figures 1-10. 



Bulbils of this species were obtained from at least ten different 

 sources, mostly on substrata such as rotten chips of Li\-e Oak (Quox-us 

 agrifolia Xee), old canvas, paper, cardboard, etc., from Claremont, 

 California. It has been found also by Dr. Thaxter on gross cultures 

 of rabbit dung from Mass. and on rotten wood from Buenos Ayres, 

 and is probably the same as that referred to by Lyman ('07, p. 166), 

 which was obtained by Mr. A. H. Chivers on a gross culture of bits 

 of wood, paper, etc. 



The mycelium, which shows quite marked damp-connections, 

 is colorless, procunil)ent, producing numerous white fibrous, rope- 

 like strands of hyphae which radiate conspicuously in all directions 

 from the point of inoculation. The white mycelium, however, soon 

 takes on a light straw-colored aspect, owing to the formation of bul- 



