1915] 



BURT THELEPHORACEAE OF NORTH AMERICA. V 747 



Brazil : San Antonio da boa vista, Rio Javary, Traill, 1, type 



(in Kew Herb.). 

 Cuba : San Diego de los Bafios, Pinar del Rio Province, Earle 



d Murrill, 405, N. Y. Bot. Gard. Herb. 



4. E. spinulosa (Berk. & Curtis) Burt, n. comb. 



Plate 27, fig. 11. 



Radulum spinulosum Berk. & Curtis, Grevillea 1 : 146. 1873. 

 Radulum degluhens Berk. & Broome, Ann. and Mag. Nat. 

 Hist. IV. 15:32. 1S7 5. Eichleriella degluhens (Berk. & Br.) 

 Lloyd, Letter No. 45:7. 1893; Wakefield, Brit. Myc. Soc. 

 Trans. 4 : 305. 1914. Stereum rufum of English authors but 

 not 8. rufum Fries. Radulum Kmetii Bresadola, I. R. 

 Accad. degli Agiati Rovereto Atti III. 3 : 102. lS97,Eichleri- 

 ella Kmetii Bresadola, Soc. Myc. France 25 : 30. 1910. 



Type: in Kew Herb. 



Fructifications longitudinally and broadly effused, wood- 

 brown, coriaceous-soft, separable, with the margin whitish, 

 finally narrowly reflexed on the upper side and tomentose, or 

 with margin everywhere free and curved outward ; hymenium 

 wood-brown, dry, usually bearing tubercules singly or in 

 small clusters, with pale tips; basidia longitudinally septate, 

 clavate, 25-36X9 /z, arranged between paraphyses with brown 

 tips ; spores simple, colorless, cylindric, curved, 15-16 X 6 /*. 



Fructifications range up to 6 cm. long by 1-2 cm. wide and 

 may be larger by confluence, about 700 /x thick; tubercules 

 about |-1 mm. long. 



Alabama. On bark of dead Populus trichocarpa, Idaho, 

 and Oregon. July to September. 



This species is distinguished by having a hymenium with 

 configuration of a Radulum and cruciate basidia. The tuber- 

 cules are often simple and cylindric, sometimes deformed 

 and multifid. The wide distribution and yet the extremely 

 local occurrence of this species together with the absence, 

 until recently, of observations on its basidia have resulted in 

 a very interesting synonymy. It is remarkable that this 

 species, which occurs on Fraxinus, Populus, etc., in several 

 countries of Europe, should have been collected in the United 



