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THE THELEPHORACEAE OF NOETH AMERICA V^ 



TKEMELLODENDROISr, ElOHLERIELLA, AND SeBACINA 



EDWARD ANGUS BURT 



Mycologist and Libraricm to the Missouri Botcmical Garden 



Associate Professor in the Henry Shaw School of Botany of 



Washington University 



The group of fungi comprising the present part probably 

 attains its greatest development both in form and numbers 

 in the western continent where it culminates in the erect 

 Tremellodendron, apparently confined to North America. 

 This continent has five of the seven species of Eichleriella; 

 it has twenty-six species of Sebacina against fifteen for the 

 Old World. 



The better-known species of these genera were originally 

 described in Thelephora, Stereum, and Corticium, with which 

 they conform so closely in general habit of growth and con- 

 sistency of the fructification that it is impossible to separate 

 them from the latter except by microscopic examination of 

 preparations which show the mature basidia to be longitudin- 

 ally cruciately septate. Collectors invariably roughly grade 

 their findings of Sehacina as Corticium. The recognition of 

 longitudinally septate basidia is not always easy with the aid 

 of the microscope; for example, the fungus originally de- 

 scribed as Stereum Leveillianum B. & C. has been studied 

 critically at several times by experts without their observing 

 the true structure of the basidia. 



I regret that the present account of our species and their 

 range in North America does not include all the material at 

 hand. The Missouri Botanical Garden herbarium contains 

 several hundred undetermined specimens of possible Cor- 

 ticiums which have been received during the last two years. 



Note. Explanation in regard to the citation of specimens studied is given 

 in Part I, Ann. Mo. Bot. Gard. 1 : 202. 1914, footnote. The technical color terms 

 used in this work are those of Ridgway, Color Standards and Nomenclature. 

 Washington, D. C, 1912. 



^ Issued December 20, 1915 



Ann. Mo. Bot. Gard., Vol. 2, 1915 (731) 



