■22*) PETCH : THE FUNGI 



aontiusculis, 1-2 guttulatis, episporio pallide incamato. levi. 

 7- 10 x 4 5. 



Ad excavationes Termitum, Fortalezas Amazonian. Non- 

 nulis notis ad Lepiotas nutat. 



Holtermann's name, Pluteus Rajap, appears to have priority. 

 But is the fungus a Pluteus ? Its development enclosed in a 

 universal veil is that of Volvaria, and the mature agaric 

 appears to differ only in slight degree from Volvaria gloioce- 

 phala, DC. , in which the volva is "adnate to the base of the stem 

 except a short torn margin. " On the other hand Pluteus is 

 said to have neither volva nor ring at any stage, tt appears 

 to be really a Volvaria. probably modified by its peculiar 

 habitat ; and this view is supported by a single specimen in 

 which the covering of the pileus is split into thin, brown, 

 gelatinous patches, with a curved edge, arranged concentri- 

 cally. L propose to call it Volvaria eurkiza. 



Dbflein (13) states that if the comb be exposed to the light, 

 the fructification of the termite fungus can be easily induced. 

 This does not refer to the agaric, but to the structures dealt 

 with in the next section. Tt has not been found possible to 

 <zrow the agaric from the comb under any conditions. 



Attempts to grow the sphere-producing mycelium from the 

 spores or tissue of the agaric have been uniformly unsuccessful, 

 and the connection between the two is not proved. The 

 available evidence appears to indicate that they are parts of 

 the same fungus, and further facts in support of this suppo 

 sition will be given later. 



The synonymy as far as can be determined is 



Volvaria rvrhiza (B. and Br.) : Armillaria eurhiza, B. and Br. 

 Hooker's Joum. Bot. 6 (1847), p. 483 : Lentinus cartilagineus . 

 B. and Br. Hooker's Journ. Bot, 0(1847), p. 490: Cdlybia 

 aparaibarbis, B. and Br. Linn. Trans. 27 (1870), p. 151 : 

 Agaricus (Pluteus) Rajap. Holtermann. Pestohrift fiir 

 Schwendener (1899), pp. 411 421 : Pholiota Janseana, Henn. 

 and Nym. Monsunia I. (1899). p. 18: Flamnwla Janseana, 

 Henn. and Nym. Monaunia I. (1899). p. 154. 



