1920] 



BURT THELEPHORACEAE OF NORTH AMERICA. XII 



117 



Fig. 9. 



S. caespitosum. 

 Gloeocystidia 

 and spores X 



665. 

 From type. 



3-5 fji in diameter near the base, tapering out- 

 ward; no colored conducting organs nor note- 

 worthy paraphyses; spores hyaline, even, 4-4X 

 3 3 At, copious. 



Resupinate portion covers area 6X5 mm., re- 

 flexed lobes 5-10 mm. in diameter about 10 in 

 the cluster. 



On broken lateral stub of dead limb of a fron- 

 dose species. Jamaica. January. Probably rare. 



Viewed from above, S. caespitosum has the gen- 

 eral aspect and coloration of species of Stereum 

 in sections having stems, as S. pergamenum and 

 S. decolorans, but is excluded from these sections 

 by attachment to the substratum by a distinctly 

 resupinate portion. The species is unique in the 

 effuso-reflexed section in the above resemblance, 

 and with additional characters of clustered, 

 imbricated habit of growth and presence of 

 gloeocystidia, should be readily recognized. 



Specimens examined: 

 Jamaica: Moneague to Union Hill, W. A. Murrill, 1181, type, 

 comm. by N. Y. Bot. Gard. Herb. 



30. S. fuscum Schrader ex Quelet, Fl. Myc. France, 14. 1888; 

 Bresadola, I. R. Accad. Agiati Atti III. 3 : 106. 1897. 



Plate 4, fig. 26. 



Thelephora fusca Schrader, Spic. Fl. Germ. 184. 1794; 

 Persoon, Syn. Fung. 568. 1801, and Myc. Eur. 1 : 122. 1822 

 (in both places renaming the species T. bicolor); Fries, Syst. 

 Myc. 1 : 438. 1821 (following Persoon). T. bicolor Persoon, 

 Syn. Fung. 568. 1801 ; Fries, Syst. Myc. 1 : 438. 1821. Stere- 

 um bicolor Persoon, Myc. Eur. 1 : 122. 1822 (under **** Stere- 

 um of Thelephora); Fries, Epicr. 549. 1838; Hym. Eur. 640. 

 1874; Morgan, Cincinnati Soc. Nat. Hist. Jour. 10: 195. 1888; 

 Sacc. Syll. Fung. 6:565. 1888; Massee, Linn. Soc. Bot. 

 Jour. 27: 177. 1890. S. coffeatum Berk. & Curtis, Grevillea 

 i:164. 1873; Sacc. Syll. Fung. 6:568. 1888; Massee, Linn. 

 Soc. Bot. Jour. 27: 190. 1890. 



Illustrations: Fries, Icones Hym. pi. 197. f. 2; Karsten, 

 Icones Hym. pi. 2. f. 9. 



