1920] The Lower Basidiomycetes op North Carolina 119 



apical in the upper, rarely near the pedicel in the lower. After 

 further observations I believe that I have tried to be too definite 

 regarding pore arrangement in the case of some of the species. In 

 G. Nidus-avis it certainly is true that often only 1 pore is observed 

 in each cell, apical in the upper, and near the septum in the lower 

 (which is referred to as apical being as near the apex as possible) but 

 frequently there are two pores in each cell, one apical and one near 

 the septum in the upper, and both near the septum in the lower. 

 The telia are often wedge-shaped instead of pulvinate. G. Nidxis-avis 

 is an unusually variable species and the description in the North 

 American Flora does not provide for the variations as it should." 



Our peculiar form of the species was collected by Arthur at Ashe- 

 ville, N. C, and cultures made on apple from his collection produced 

 the typical aecia and pycnia. Infections made March 22nd gave 

 p.ycnia by April 6th and aecia by April 27th (Mycologia 2 :230. 1910). 



186a. On branches of J. virginiana which were 3-4 mm. thick, March 31, 1914. 

 2112a. On branches of ,/. virginiana which were about 0.6-1-3 cm. thick, March 

 17, 1918. 



AURICULARIACEAE 



Basidia ( in the more typical members of this family) elongated, 

 divided into four or fewer cells by cross walls, each cell sprouting by 

 a slender or a thickish sterigma to form a single spore; form of fruit 

 })ody various, its texture varying from toughly or softly gelatinous 

 to waxy. Resembling the rusts closely in the liasidia and spores, but 

 differing from them in tlie absence of a thick-walled, abstricted telio- 

 ^])()r(' from which the basidia sprout, and in not being |)arasitic'. but 

 sapropiiytic on dead wood. 



Nearest this family apparently, but doubtfully belonging to it, is 

 the peculiar genus Septobasidium which is parasitic on scale insects 

 and has a fibrous, leathery texture. The basidia are divided by cross 

 walls but arc variable in the form and number of the cells, and the 

 nuinlx'i- i)t' the cells that produce spores is not known in all cases. We 

 arc including it here. Sec Bi-cfchl ]. c., p. (il). 



Ki:v TO Our (Jenera 



Texture f^elatiiious or wa.xy. 



T(»ujj;lily {jehitinous; form more or less resem- 

 l)linfr an car, wliidi projects from the wooil 

 l)y a lateral attadiment {compare Exidia 

 gclatinosa) ; basidia not arisin<; from a 

 special izcil sac Anricuhiria 



