Banker: Type Studies in the Hydnaceae 313 



ably this same species, but is not quite typical, having a thicker 

 pileus, and is a little darker colored. 



At Paris a specimen was found evidently distributed by 

 Spegazzini as an authentic specimen of his H. giiaraniticum from 

 Paraguay, June, 1883. The plant appeared to have all the char- 

 acters oi H. rawakense Pers. 



The type of H. basi-asperatum Henn. is in the Berlin herbar- 

 ium, Germany, and was collected by E. Ule in Brazil, No. 743. 

 The plant lias precisely the texture, color, and tooth characters 

 of Steccherinum razuakense Pers. It appears to have been a 

 plant that when half grown had been turned over so as to bring 

 the hymenial side upward and had then proliferated a series of 

 confluent pilei from its margin, giving the margin a lobed appear- 

 ance. The hymenial layer of these new growths has spread back 

 over what was the upper surface of the old pileus, forming a con- 

 tinuous layer which is interrupted, however, at one point where 

 the characters of the upper surface of the old pileus are revealed. 

 The teeth on the old lower surface now exposed upward have 

 become darkened and appear weathered somewhat, but are still 

 distinctly teeth and not hairs or tomentum. With this explana- 

 tion the plant is identical with Holler's specimens in the same 

 herbarium mentioned by Hennings in his original description. 

 This curious mare's-nest is figured true to the specimen in Engler 

 und Prantle, Die naturl. Pflanzenf. L i''''* : 145. /. 77. c-e. 



Steccherinum pusillum (Brot.) 



Hydnum pusillum Brot. Fl. Lus. 2 : 470. 1804. 

 Steccherinum adustulum Banker, Mem. Torrey Club 12: 133. 

 1906. 



The type of H. pusillum Brot. is probably not in existence. At 

 both Kew and Upsala were found specimens from Quelet referred 

 in some cases to Hydnum pusillum Fr., in others to H. pusillum 

 Quel, and at Upsala the sheet itself was marked " Hydnum pusil- 

 lum Brot." All of these specimens were undoubtedly the same 

 as my Steccherinum adustulum. The species is, therefore, a 

 European form as well as American, and Brotero's description so 

 well fits the characters of the plant as we know it that there seems 

 to be no reasonable doubt that his name should prevail for this 

 species. 



