334 FETCH : 



and Physarum lividum, var. conglobatum, consists of typical 

 compressed sporangia on black or gray furrowed stalks in 

 Herb. Peradeniya. This is a common species at Peradeniya, 

 occurring in abundance on dead leaves. The sporangia are 

 always of the typical compressed form, on white, or black, or 

 gray stalks ; spores usually 12 /' in diameter. In one gather- 

 ing the sporangium wall is purple, without lime deposits, or 

 with scanty deposits in a few instances. 

 Peradeniya, Teldeniya, Hakgala. 



Physarum nicaraguense, Macbride. 



" Didymium cinereum, Fr.," in B. & Br., Fungi of Ceylon, 

 No. 756. ''Physarum nutans, P.," in B. & Br., Fungi of 

 Ceylon, No. 759. Tilmadoche reniformis, Mass., Mon., p. 336. 

 Didymium echinosporum, Mass., Mon., p. 239. 



Thwaites, 1038, B. & Br., 759 (in part), consists, in Herb. 

 Peradeniya, of lobed, or bolster- shaped, white sporangia , 0-5 

 to 1 mm. long, on yellow-brown stalks, darker towards the 

 base, 1 to 1*5 mm. high ; total height 1*5 to 2 mm. ; stalks 

 furrowed and twisted, 220 m diameter at the base, 50 f at 

 the apex ; wall of sporangium membranous, with dense lime 

 deposits, yellowish at the base ; lime knots white, large, 

 angular, connected by short hyaline threads, or confluent, 

 forming a pseudo-columella ; spores 13 to 15 H-, strongly 

 spinulose, dark purple- brown ; this Thwaites' number at Kew 

 is the type of Didymiiim echinosporum, Mass. Thwaites, 135, 

 B. & Br., 756 (in part), includes two species in Herb. Pera- 

 deniya ; one of these is Physarum didermoides, Rost., the other 

 is Physarum nicaraguense, with either sessile or yellow- 

 stalked lobed sporangia ; the same mixture occurs in British 

 Museum 420. Thwaites, 25, B. & Br., 759 (in part), is the 

 type of Tilmadoche reniformis, Mass., in Kew 1406, and, fide 

 Lister, Mon., p. 54, is the same species as Didy^nium echinos- 

 porum. " It is a form with compressed reniform sporangia on 

 long buff stalks ; capilhtium with large fusiform or branching 

 lime knots and short hyaline threads ; spores dark purple- 

 brown, spinose, 13 to 15 /^ " (Lister, loc. cit.). 



A fairly common species at Peradeniya , usually in consider- 

 able quantity on almost sound logs. One gathering consists 

 entirely of stalked sporangia ; stalks 1 mm. high, furrowed 



