REl'OKT OF THE STATE BOTANIST IQI/ 'J ^ 



been found. It is known to grow on witch hazel, oak, maple, and 

 alder, and S. 11. lUn-nham says he finds it frequently in New York 

 on basswood and ironwood. Several collections were made by tlie 

 writer in New Hampshire in the summer of 1918. Its decaying 

 effect seems to be very slow and long drawn out. 



Redcscription. Effused for several centimeters on wood or bark, 

 annual, separable, thin (less than imm), more or less surrounded by 

 a thin, narrow, white, slightly pubescent border not more than i 

 mm broad; subiculum thin bui conspicuous, light colored; tubes less 

 than .5 mm long in dried plants, their mouths pinkish ochre (fide 

 Peck) to light bufi^, light pinkish cinnamon, or light ochraceous 

 salmon when fresh, not much changed on drying though sometimes 

 inclining to cinnamon, usually glistening, more or less angular, thin 

 walled but entire, averaging 5 to 6 to a millimeter ; spores ellip- 

 soidal or slightly elliptical, hyaline, 3 to 4 x 2 to 3 /*; cystidia 

 abundant, sometimes mostly embedded but more often conspicu- 

 ously and obliquely projecting, hyaline, encrusted, 60 to 80 x 7.5 to 

 10 fi; trama and subiculum compact, of hyaline, thin-walled, nearly 

 simple hyphae, 2 to 4 ^ in diameter, apparently without cross walls; 

 clamp connections lacking. 



On dead wood and bark of deciduous trees. 



Type locality: Croghan, N. Y. C. H. Peck. Rather widely dis- 

 tributed through the eastern states as far west as Missouri. 



Poria attenuata var. subincarnata Peck 



Plate 2, figures 3-6 



48th Rcp't N. Y. State Mus., p. ii8 (Bot. ed. 20). 1896. 

 Original description. This differs from the typical form in the 

 paler color of the pores. It grows on hemlock bark and forms small 

 patches rarely more than i inch in diameter. N. Y. Sept. Shear. 



Notes. This, originally described as a variety of Poria 

 attenuata, is a distinct species. It has little resemblance to 

 that species except in its thickness and in the size of the pores. It 

 grew on the bark of hemlock, while the typical species, so far as 

 known, is confined to deciduous wood. Its color is considerably 

 different from that species, and the spores (plate 2, figure 4) are 

 allantoid, while those of the species are ellipsoidal. In some respects 

 it is similar to resupinate forms of Polyporus semipilea- 

 t u s Peck, but appears to differ somewhat from that species. The 

 writer is certain that the plant is not a variety of Poria atten- 



