REPORT OF THE STATE BOTANIST I917 75 



Acer. This one was collected on pine wood at Ithaca, N. Y., by 

 G. F. Atkinson and is referred to by Peck in Report 51 : 299. 1898. 

 The other collection is from pine bark and is quite different, agree- 

 ing very well with specimens of Poria subacida. There is 

 also one collection in a herbarium box, from C. H. Fairman, 

 Lyndonville, N. Y., on hemlock, October 1910, referred by Peck as 

 " Poria aurea — Myriadoporus form." These specimens do not 

 agree with the types and are not considered as that species. Several 

 facts warrant the conclusion that the specimens from Acer should 

 be regarded as the types. Among these may be mentioned the fact 

 that in the original description, Sevey is given as the type locality 

 and this locality was evidently the one first written on the herbarium 

 label. The locality of the Ithaca collection evidently was noted at 

 another time and perhaps by a different person, as the handwriting 

 seems different. No locality is given for the collection from pine 

 bark. The speciments on Acer are distinct from any other of 

 Peck's species and are different from any species known to the 

 writer. 



The largest specimen is 10 cm long and 4 cm broad but is incom- 

 plete. The color of the hymenial surface in these specimens is 

 between cartridge-bufif and honey yellow. Mature specimens have 

 no sterile margin but more immature ones sometimes have a very 

 narrow white margin which is not, however, uniformly sterile. It is 

 not at all fimbriate. The thickness of the hymenium-producing 

 portion is 2 to 5 mm in mature specimens. Of this thickness practi- 

 cally all is made up of tvibes, as little or no subiculum is present. 

 The mouths of the tubes are angular and where best developed 

 average 2 to 3 to a millimeter. The dissepiments are very thin but 

 entire except when growing in oblique positions. In dried specimens 

 they are quite fragile. The best developed specimen has a silky 

 luster over the hymenium. 



The spores of this species are oblong or short-cylindrical and 

 with an oblique apiculus (plate 3, figure 2). The other end of the 

 spore is more or less rounded. They are colorless, smooth, measure 

 5-5 to 7.5 fx in length and 2.5 to 3.5 /x in breadth. It will be noted 

 that these spore characters are different from those assigned to the 

 species by Peck. Those given here, however, are from the speci- 

 mens on Acer. Peck's measurements agree with those of the spores 

 from the specimens on pine bark, and they agree with those of 

 Poria subacida. Abundant cystidia are present in the 

 hymenium (plate 4, figure 1-2). They are large, hyaline struc- 

 tures often slightly encrusted at the apex, and quite variable in size 



