CONTEXT AND PORES COLORED. 



on our last trip to Europe. Fries evidently (as he states) did not know the plant, 

 but he misreferred here a figure of Bolton and apparently drew his description from 

 Bolton's figure. In that sense it was probably Fomes pomaceus. and has so been 

 referred as a synonym by Quelet and Bresadola. Polyporus cinnamomeus has noth- 

 ing in common with Fomes pomaceus, but is a species of Polyporus, otherwise un- 

 known to me. It suggests to me only Polyporus valenzuelianus, and the pileus sur- 

 face is of the same reddish color. It is evidently a most rare species of Europe, and 

 has not been found since Trog, eighty years ago. 



ILLUSTRATIONS. None. Bolton's figure, here referred by Fries with doubt, has no re- 

 semblance to it. 



Fig. 675. 



Polyporus zonalis. 



POLYPORUS ZONALIS (Fig. 675). Pileus thin (4-6 mm.), 

 rigid, drying hard, incurved. Surface reddish brown, with narrow, 

 concentric, raised zones. Context thin, hard, pale ochraceous. Pores 

 minute, 3-4 mm. long; when old, brown, but my impression is that 

 they are orange when fresh. Spores abundant, globose, 4-5 mic., 

 hyaline, smooth. 



This is a common species throughout the tropical world. It was 

 named from Koenig's specimen from Ceylon, type at British Museum. 

 The greater part of the abundant specimens in the museums, both 

 from American tropics and the East, are evidently the same, though 

 aberrant forms are found in the American tropics. Fomes lignosus, 

 also a common species in the tropics, is very much like this in its (usual) 

 Polyporus form. We have trouble in distinguishing them. Same 

 general colors and pileus surface. The pores in Polyporus lignosus 

 fade out in the older parts, but retain a uniform color in Polyporus 

 zonalis. There are always abundant spores found in Polyporus zonalis. 

 We have never found spores in Polyporus lignosus. We have a col- 

 lection from Ceylon with more adustus pores than usual. Also col- 

 lections from Brazil with pileus not so strongly zoned. Polyporus 

 zonalis in the American tropics grades into the next. 



SPECIMEN'S. Surinam, J. Kuyper; Nicaragua, C. L. Smith; Jamaica, N. V. Botanical 

 Gardens; Brazil, Anna Brockes, Rev. F. Theissen, Rev. Rick; Java, Dr. J. W. C. Goethart, Rev. 

 Bresadola; Philippines, E. D. Merrill; Ceylon, T. Fetch; Australia, W. W. Froggatt; Hawaii, C. N. 

 Forbes; Samoa, C. G. L.; Japan, A. Yasuda. 



Compare Holtermanni, inconspicuus, Jelinekii. plumbeus, polymorphus, rufo-pictus. rugulosus, 

 also Fomes microporus. 



336 



