368 PETCH : 



hypothallus ; tlie persistent plates of the sporangium wall are 

 few in number and almost smooth ; the capillitium threads 

 bear broad-based spines and acute-edged half or quartet 

 rings. 



Perichsena chrysosperma, Lister, 



Ophiotheca Wrightii, B, & C, in B. & Br., Fungi of Ceylon, 

 No. 1197 (Thw. 1047). 



Thwaites' No. 1047 in Herb. Peradeniya consists of 

 I'ing-shaped plasmodiocarps, 1'3 to TS ram. diameter, 

 blackish-brown above, red-brown at the sides ; spores 10 to 1 1 /^ 

 diameter ; spines of the capillitium short, not exceeding 3 ^. 

 It is a fairly common species, but never in large quantity ; 

 iisually on fallen branches, but it lias been found on elephant 

 dung at Hakgala. The sporangia are sometimes globose, 

 about 0'5 mm. diameter, but more usually ring-shaped or 

 horse-shoe shaped, and about 1 mm. diameter. The spines in 

 some gatherings are 8 /^ long. In a gathering from Henarat- 

 goda the plasmodiocarps are small, globose, or ring-shaped, 

 0'3 to 0*5 mm. diameter, brownish -yellow, reticulated with 

 darker lines ; the sporangium wall is almost destitute of 

 granular deposits. In another gathering, from Peradeniya, 

 the spines are reduced to sHght warts, only here and there 

 arising to about half the usual length. 



Peradeniya, Henaratgoda, Hakgala. 



Perichaena depressa, Libert. 



Perichcerui vuirginata, B. & Br., Fungi of Ceylon, No. 1201 

 (Thw. 49). 



Thwaites' No. 49 in Herb. Peradeniya consists of crowded, 

 polygonal, fiat sporangia, 1 to 1*5 mm. diameter, lilac-gray, or 

 almost white, with superficial deposits ; in this respect it agrees 

 with the type of Perichoetui applanata,, Massee, from Australia. 

 Air. Lister found that the same Thwaites' number at Kew was 

 Hemitrichia Karstenii, but the description given by Berkeley 

 and Broome evidently refers to the Peradeniya specimens. 

 It seems probable, in view of the fact that H. Karstenii 

 has not been found recently ill Ceylon, and that the type 

 specimen of P. applanata agrees with the Ceylon specimens 

 in Tiiwaites' No. 49, that there has been some interchange of 



