LIBRARY 



The Genus Chitoniella. new york 



ChiUmiella poderes {Berk. <fc Br.), P. Henn. BOTANICAL 



GARDEN. 

 BY 



T. FETCH. 



THE genus Chitoniella* was founded by P. Hennings 

 (Engler-Prantl, Pflanzenfamilien, 174, p. 240) for the 

 reception of the species named by Berkeley Psalliota 'poderes 

 from specimens forwarded from Ceylon by Thwaites in 1869, 

 There is apparently no other species known of this genus, 

 and as it would certainly not be recognized from the descrip- 

 tions in " Saccardo," the following details may serve to 

 prevent further synonymy ; errors in the descriptions are 

 italicized. 



Hennings {Joe. cit.) writes : — 



' ' Chitoniella P. Henn. Hut und stiel in der jugend von einer 

 hautigen Hiille umschlossen, die bei Streckung des Stieles 

 zerreisst und am Grunde desselben als hautige soheide, sowie 

 auf der Hutoberfldche in faserigen Schuppen zuriickbleibt. Hut 

 vom Stiele getrennt. Stiel oberhalb der mitte von einsm 

 hautigen Ringe umgdben. Lamellenfrei. Sporen 'purpurbraun. 



" I Art. Ch. poderes (B. & Br.) P. Henn. Hut halbkugehg, 

 5 cm, breit, faserig-schuppig, seidig gestreift, am scheitel von 

 zuruckgebleibenen Resten der Volva rauh ; Stiel 1^ cm. long, 1| 

 mm. dick, in der Mitte mit einem, weiten, hautigen, weissen 

 Ringe, am Grunde mit einer braunlichen, am Bande gezdhnten 

 Scheide ; auf Ceylon." 



Berkeley's specimens are the only ones which have been 

 sent to Europe, and apparently two of them were not returned. 

 But the original drawings are still at Peradeniya, and it is 

 quite evident from these, and the third specimen, that 

 Berkeley gave the species three names, Psalliota trachodes, 

 Berk., on specimens sent by Gardner in 1846, and Psalliota 

 trachodes, Psalliota pedilia, and Psalliota poderes on specimens 

 sent by Thwaites twenty years later. 



**^ * The name was first suggested by Massee (Brit. Fungus Flora, 



^ Vol L, p. 418). 



[Annals of the Royal Botanic Gardens, Peradeniya, Vol. IV., Part IV., Dec., 1908.] 



7(6)08 (15) 



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