1914] 



BURT THELEPHORACEiE OF NORTH AMERICA. I 199 



II. HYMENO-LICHENS: 



Fructification regularly containing green lichen gonidia. 



Species tropical. 



Fructification pileate, coriaceous-membranaceous, with hymenium on the 

 lower surface and somewhat waxy; gonidial layer composed of some- 

 what cubical masses of algal cells Cora 



Fructification hke Cora in most respects but with the hymenium somewhat 

 gelatinous and the gonidial layer composed of algal cells arranged in 

 rows (catenif orm) ~ Rhipidonema 



THELEPHORA 



Thelephora EhrhsLTt [Crypt. Exsic. No. 178. 1785] Fries, 

 Syst. Myc. i: 428. 1821 (in part).-Persoon, Myc. Eur. i: 

 110. 1822 (in part).-Saccardo, Syll. Fung. 6: 521. 1888 (in 

 part).-Hennings, in Engl. &. Prantl, Nat. Pflanzenfam. (i. 1**): 

 125. 1898 (in part). 



The type species of the genus is Thelephora terrestris Ehrh. 

 ex Fries. 



Fructifications pileate or clavate, coriaceous; hymenium con- 

 tinuous with the hymenophore and similar to it, inferior, or 

 amphigenous in a few species, even or faintly ribbed or papillose; 

 basidia simple, 4-spored; spores colored, typically muricate but 

 even, or rough-walled in a few species. 



As more broadly defined by Fries and the other authors cited, 

 Thelephora has been heterogeneous, consisting chiefly of the 

 natural and homogeneous group of species defined above but 

 also of some pileate species with simple basidia and 1 yaline 

 spores, transferred to Stereum; also of some species with globose, 

 longitudinally septate basidia, transferred to Tremellodendron, 

 if with erect fructifications, or to Sehacina, if resupinate; and 

 also of some resupinate species having simple basidia, of which 

 those with muricate and colored spores may be found in Hypoch- 

 nus, those with colored and even spores, in Coniophora, and 

 those with hyaline spores, in Corticium and Peniophora. It is 

 probable that the species of Patouillard's section Dendrocladium 

 of the genus Lachnocladium as understood by Patouillard * 

 might be transferred to Thelephora with advantage both to 

 Thelephora and Lachnocladium, but these species are not within 

 the geographical limits of my work. 



^ Fragments Mycologiques (suite). Jour, de Bot. 3:33-37. 1889. 



