466 



LYCOPERDACE/E 



Tulostoma 



CXII. TULOSTOMA Pers. 



(From the structure of the mouth of the peridium ; 

 Gr. tulo s, cartilage, stoma, a mouth.) 



Peridium subglobose, dehiscing by an apical stoma, outer coat, 

 veil or cortex, deciduous, distinct from the at length elongate stem. 

 Threads of the capillitium swollen at the septa. (Fig. 128.) 



Fig. 128. Tulostoma mammositm Fr. Two-thirds natural size. 

 A, entire plant. B, sections, c, basidia, spores and thread of capillitium. X 1000. 



2047. T. mammosum Fr. (from the breast-like peridium ; mamma, a 



breast) a b c. 



V. universal, distinct at the base of Pe. and at the lower part of St. 

 Pe. globose, at first sessile or nearly so, stoma mammiform, 

 entire, ochre. St. equal, squamoso-fibrillose, ragged at the 

 base with remains of V., somewhat pale vinous-brown. 



Amongst moss on old walls, dry banks, sandhills, etc. Oct. -Feb. 2^x in. 

 There are two forms, brown, with a stout stem, and yellowish-white, with 

 a slender stem. Intermediate forms occur. 



CXIII. QUELETIA Fr. 

 (After Dr. Lucien Quelet.) 



Peridium subglobose, simple, stoma none, the wall breaking up 

 irregularly at maturity. Stem at length long, squarrose, the base of 

 the peridium breaking at the apex and forming a collar or veil. 

 Spores borne on tetrasporous basidia. (Fig. 129.) 



2048. Q. mirabilis Fr. (from its unusual appearance ; mirabilis, 

 wonderful) a. 



