SPORES HYALINE. 



largely wrong, for conchoides is a thin, white, tropical plant close to 

 Polyporus dichrous. 



In the northern regions of the United States and Europe Poly- 

 porus dichrous is very uniform, but it takes many color forms in the 

 tropics, as follows: 



ILLUSTRATIONS. Sturm's flora, fasc. 16, t. 39. This seems to be the only one, and it is very 

 good. The pores are deeper purplish than shown, but it is fair. 



SPECIMENS. Many from America, several from Europe; Japan, A. Yasuda a very thin 

 form; Brazil, Rev. Rick, Rev. Thiessen, exactly same color hymenium as our United States plant- 

 South Africa, Miss A. V. Duthie. 



Compare Curreyanus, Macouni, nigro-purpurascens. 



POLYPORUS MADAGASCARENSIS This is a brown form, with thick, 

 much more fragile flesh than the European form. We have this only from Mada- 

 gascar, Henri Perrier de la Bathie. 



POLYPORUS CROCEO-PALLENS is a form recently named from Java with 

 yellow pores. There is a cotype at Kew. 



POLYPORUS CONCHOIDES. Plant when growing pure 

 white, thin, dimidiate, imbricate. Flesh thin, white. Pores minute, 

 white when fresh, drying flesh color, gelatinous. Spores allantoid, 

 1-1^x4-5. 



Originally from India, Polyporus conchoides is widespread in 

 the tropics. It was described from dried specimens as having flesh 

 colored pores, and when I recently collected it in Cuba, with pure 

 white pores, I did not recognize it until in drying the pores turned 

 flesh color. Some one started the story that our common, temperate 

 region plant with dark, purplish pores, Polyporus dichrous, was 

 Polyporus conchoides, and this mistake permeates most of our Amer- 

 ican literature. While Polyporus conchoides is not rare in American 

 tropics, I do not know it in the United States, even in Florida. 



The pores are so minute that Leveille, with his customary ac- 

 curacy, discovered it to be a "new species" of Thelephora (sic). 

 The original collection sent to Europe was from South America, and 

 was called Boletus Thelephoroides by Hooker. It passes in Saccardo 

 as a Polystictus, and for eighty years the type in good condition has 

 remained unrecognized in the cover at Kew. We presume the jug- 

 glers will juggle the name Polyporus conchoides as soon as they find 

 it out. 



SPECIMENS. Madagascar, Henri Perrier de la Bathie; Ceylon, T. Fetch; Brazil, Rev. Rick, 

 Rev. Thiessen; Nicaragua, C. L. Smith; Cuba, C. G. Lloyd. 



POLYPORUS AMORPHUS. Pileus thin, concolorous, dimidi- 

 ate, imbricate, often effused and subresupinate. Surface white, 

 smooth, minutely silky pubescent. Flesh white, subgelatinous, drying 

 rigid. Pores small to medium, shallow, varying in color white, reddish, 

 or flesh color, and rarely deep yellow. Spores allantoid. I>^x4, 

 cylindrical, curved. 



331 



