44 BOTANICAL GAZETTE. 



when old, the first year whitish, then gray or cinereous, finally 

 black, the margin obtuse, the substance obscurely zoned within, at 

 first whitish, then isabelline; pores medium size, stratose, nearly 

 plane, subrotund, the dissepiments obtuse, entire, whitish; spores 

 white, broadly elliptical, .0003-00035 of an inch long, .00025-0003 

 broad. 



Pileus 2-4 inches long, 1-2 inches broad. 



Dead or languishing trunks of ash trees. Dakota. C. W. Irish. 

 Arizona. C. G. Pringle. 



This Polyporus belongs to the Fomentarii. It varies consid- 

 erably in shape, some specimens being almost as much flattened as 

 the thicker forms of P. applamtus, others being as thick as the or- 

 dinary forms of P. f omenta rats. Specimens three or more years 

 old are somewhat tri-colored, the oldest part being black and full 

 of chinks or cracks, the margin whitish and the intermediate part 

 gray or cinereous. The annual additions are separated by concen- 

 tric grooves. In the Dakota specimen the annual additions are 

 much broader than in the Arizona specimens, and the pileus is 

 more flattened and thinner. The interior substance is at first 

 whitish but it changes with age to a brownish-yellow or isabelline 

 hue, thus forming a connecting link between the second and third 

 sections of this tribe as given in the Epicrisis of Fries. 



Merulius rubellus. — Pilei mostly casspitose, imbricated, ses- 

 ile, dimidiate, soft, somewhat tenacious, tomentose, deep-red when 

 fresh, paler when dry, the margin usually undulate, inflexed; hy- 

 menium whitish or cream-colored, the folds much branched, porous- 

 anastomosing; spores -minute, elliptical, colorless, .00016-.0002 of 

 an inch long, .0001-.00012 broad. 



Pileus 2-3 inches long, 1-2 inches broad; tufts sometimes six 

 inches long. 



Decaying trunks of beech trees, Fagus ferruginea, in dense 

 woods. Near Cincinnati, Ohio. December. A. P. Morgan. 



This is a beautiful species, similar to M. tremellosus in the size 

 and thickness of the pileus, but very different in color. The fresh 

 moist pileus is a deep red (Indian red) but in drying it fades to a 

 pinkish-gray or to a grayish hue with a red margin. The texture 

 is almost floccose-tomentose, with the upper part red, the lower 

 white. According to the notes sent me by Prof. Morgan, it differs 

 from the description of M. incarnatus in the pileus not being 

 "coriaceo," the folds neither u subtremellosis ,, nor " luteis roseisve, 

 the mode of growth not "stellatim provenit 11 and the habit not be- 

 ing "ad cortices dejectos Quercus albw, faleatce" although fallen 

 trunks of Quercus alba were more abundant in the locality where 

 it was collected than were those of the beech. 



Puccinia Brandegei. — Spots none, sori amphigenous or cau- 

 lincolous, often confluent, reddish-brown, distorting the stems and 

 petioles; spores subelliptical, smooth, .0011-0014 of an inch long, 

 .0008-001 broad; pedicels short. 



