Tanaka: New Japanese Fungi 90 



^rycclial strands ( pilca ) epigcnoiis on trunks and twigs, first 

 circular then increasing the area irregularly, often attaining lo 

 cm. diam., Hat, lichenous, i mm. thick, surface velvety, brownish, 

 pale-purplish-brown, or dark-brown, with very narrow thin 

 margin grayish in color; hyphae branching, amber-colored, septate, 

 thick-walled, granulate, in continuous row, 3-5^1 across; proto- 

 basidia not formed; basidia consisting of free branched ends of 

 surface hyphae swollen and more or less club-shaped, first uni 

 cellular, hyaline and very granulate but at maturity sub-fusoid, 

 2-4-septate, straight or curved, 49-65 X 8-9 jx, producing sterig- 

 mata on each cell ; stcrigmata apical in the terminal cell, lateral 

 in others, long, curved, comparatively large, 35-63 X .3-5-4 m ; 

 sporidia terminal on each stcrigma. hyaline, unicellular, long- 

 falcate, obtuse. 27-40X4-6/^. germinating to form hyphae. 



On trunks and twigs of Morns, Salix, I'itis, Jiiglaiis, Xaii- 

 thoxylum, Pniinis Miimc, Priinns donarinm, Primus salic'ma, 

 Pruniis Armcniaca var. .Insii, Pyrns Mains, Pyrus sinensis, 

 Ribcs Grossnlariu, Kcrria japonica, Thca sinensis, Panlownia 

 tomcntosa^ Firmiana platanifolia, and Pittospornm nndnlatnm. 



Distribution : Japan, very common. 



Most Japanese authorities who have described this species have 

 confounded it with Scptobasidinm pediccllatnni (Schw.) Pat. but 

 the true S. pedicellatnm was first discovered in Formosa by Mr. 

 Sawada (Bot. Afag., Tokyo, 26'"'*: 307-311. Japanese) where 

 Hclicobasidinm Tanakac does not occur. Septohasidinm pedicel- 

 latnm seems to attack only the mulberry tree and differs in having 

 chestnut-brown hyphae 3.5 /u. across, forming an ocher-brown 

 pileus (never purplish), and in the formation of strongly curved 

 basidia, 24-48 X 6-8.5 /x, which develop from spherical proto- 

 basidia. 



Note: For an account of the occurrence of Septohasidinm pedi- 

 cellatnm in Honshu (Main Island), we are indebted to Prof. A. 

 Yasuda, who reported it from K6dzuke-no-kuni (Prefecture 

 Gumma-ken) Setagun (Bot. ^lag. Tokyo, 28-^''-^': 447, Nov. 1914. 

 Japanese). Hara later states that it occurs commonly in the 

 main island (Dainii)pon Sanshi Kwaiho, Journ. Seric. Assoc. 

 Japan. 25-""": 713, Sept. 1916). It has also been collected by 

 Miyake at a place near Tokyo (Sangyo Shikenjo Hokoku T' : 333, 

 Dec. 1916), and recently T. Watanabe reports that it is 5". pedicel- 



