CONTEXT AND PORES WHITE OR PALE. 



E. Trametes. 



The following three species are (doubtfully) better classed in Trametes on account of their 

 " punky" flesh, but are apt to be sought in this section of Polyporus. 



TRAMETES SUAVEOLENS. Pileus usually applanate, about 

 an inch thick. White when growing. Surface anoderm, hard, but 

 minutely pubescent and soft to the touch. Context white, dry, corky- 

 punky. Pores firm, rigid, medium, round. Spores 3-4x10-12, 

 cylindrical, curved. 



It is a common species both in Europe and the United States, 

 always on willow. It is quite fragrant when fresh, odor of anise, and 

 is easily recognized. When in its prime it is a pure white plant, but 

 old and wintered specimens turn dark. The surface is soft, pubescent, 

 and in northern Europe the pubescence is longer and might w r ell be 

 described as villose. Fries' type, in the British Museum, is of this 

 nature. We do not seem to have this villose form in the United 

 States. 



ILLUSTRATIONS. Sowerby, 228, pores larger than usual; Boudier, 163, drawn from a dis- 

 colored specimen; Gillet, 473, the best. Many others. 



SPECIMENS. Many, from United States and Europe. 



TRAMETES ROBINIOPHILA (Fig. 653). Pileus ungulate, 

 white, 2-3 inches thick, with dull, white, mat surface. Context white, 

 drying soft and punky. Pores minute, round, 4-6 mm. deep, white, 

 drying isabelline or darker than the context. Spores subglobose, 7-8 

 mic., hyaline, transparent, with large guttae. 



The locust (Robinia pseudacacia) is the only host that bears this 

 species. It is common in the Middle West. Usually it grows from 

 decayed parts of standing trees, and is usually solitary. It has been 

 known for many years, and was the basis of Polyporus salignus of 

 Morgan's record. Recently Murrill discovered that it was a new 

 species, and named it as above. It is a question whether it is a Poly- 

 porus or a Trametes. The punky context is much softer but similar 

 to that of Trametes suaveolens, and for that reason it may be classed 

 as Trametes. We do not know it excepting from the United States. 



SPECIMENS. Many from the United States, all from locust. 



TRAMETES CUBENSIS. Pileus thin, rigid, sessile. Surface 

 smooth, no distinct crust, white, usually with a reddish blotch or stain 

 at the base. Context white, rigid, punky, becoming dark with age. 

 Pores minute, round, rigid. Spores we have never found. 



This is a frequent species in the American tropics and southern 

 Florida, and a very peculiar one. When growing it is white, and it dries 

 white, but after some months on herbarium specimens there comes a 

 red stain on the pileus and the plants turn dark, finally getting almost 

 black. Perhaps the stain comes on plants in situ, but we collected it 

 white in Florida and did not recognize it until after some months 



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