278 



Mycologia 



fungi. These were studied and collected for several days in the 

 vicinity of Blacksburg, Virginia, at an elevation of 2,200 feet, 

 where the woodlands are mostly oak-chestnut and the rocks 

 Trenton Hmestones or subcarboniferous shales and sandstones. 



Many of the gardens, vineyards, and orchards were severely 

 injured by the rainy weather, various wilts and rots having de- 

 veloped in abundance. Trees were attacked by destructive poly- 

 pores, among them Bjerkandera adusta, Corioliis versicolor, 

 Daedalea quercina, Elfvingia lohata, Fulvifomes Rohiniae-, Gri- 

 folia Berkeleyi, Laetiporus speciosus, Porodaedalea Pini, Tra- 

 metes robiniophila, and Tyromyces Spraguei. The most abund- 

 ant of these were probably Fulvifomes Robiniae on black locust 

 and Elfvingia lobata on various species of oak, hickory, and 

 maple. This latter species seems to entirely take the place of 

 Elfvingia megaloma in that section, and its annual habit and other 

 distinguishing characters are plainly marked. 



The forest floor was covered with fungi of all kinds, this being 

 the first and probably the largest crop of the season. Most 

 abundant and conspicuous among the fleshy forms, was Lactaria 

 piperata, growing in large patches and reaching the size of ordi- 

 nary breakfast plates. Lactaria volema was also common, while 

 L. corrugis was found only once. Russula virescens, R. foetens, 

 R. emetica, and several purple species were seen, but the genus 

 was not yet well represented. 



V enenarius phalloides, V. rubens, V. Frostianus, and V. soli- 

 tarius were found, but it was probably too early for V. cothur- 

 natus, which was not seen in the places where it grew several 

 years ago. The genus Vaginata was very well represented. 

 Vaginata plumb ea occurred in all color-forms ; the rare V. par- 

 civolvata was found twice; and V. farinosa once. 



The Clavarias had not yet appeared ; while the Hydnums were 

 represented by H. adustum and H. repandum. Three puffballs 

 were seen, and Dictyophora duplicata was unusually abundant 

 and offensive in gardens and about bulidings. Boletus com- 

 munis, B. griseus, B. luridus, B. felleus, and B. bicolor were the 

 only members of the Boletaceae yet in evidence. 



