[Vol. 6 



56 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Fructifications irregularly globose, 2-4 cm. in diameter, very 

 fragile; no distinct peridium; gleba at first white, then dirty 

 white; sterile base obsolete, but in one specimen the base 

 growing into a slender stem emerging from an umbilicus; 

 glebal cavities somewhat enlarged, irregular, dirty white; 

 septa narrow, white, not scissile; spores globose, 9-10 /x in 

 diameter, hyaline, verrucose, often short-caudate, two to each 

 basidium, supported on short sterigmata. 



Under ground. Tasmania. 



2. Gymnomyces seminudus Massee & Rodway, Kew Bui. 

 Misc. Inf. 1898 : 125. 1898 ; Saccardo & Sydow in Sacc. Syll. 

 Fung. 16 : 249-250. 1902. 



Type : Rodway, 124, in Kew Herb. 



Fructifications globose, 1.5-2.5 cm. in diameter; peridium 

 when present delicately tomentose ; gleba white, fertile to the 

 base ; glebal cavities minute, very crowded, empty, irregular ; 

 septa somewhat broad, white, not scissile ; basidia subclavate ; 

 sterigmata two ; spores spherical, 11-12 n in diameter, closely 

 echinulate, hyaline. 



Emerging from the ground. Tasmania. 



Gymnomyces seminudus Mass. & Rodw. is distinguished 

 from G. pallidus Mass. & Rodw. by the larger, strongly and 

 densely echinulate spores. 



MACOWANITES 



Macowanites Kalchbrenner in Sacc. Syll. Fung. 7 : 179. 

 1888 ; Fischer in Engler & Prantl, Die Nat. Pflanzenf am. I. 

 1**: 299-300. /. 148. 1899.— Macowania Kalchbrenner, Gard- 



eners J Chron. N. S. 5 : 785. /. 1^1. 1876. — Not Macowania 



Oliver in Hooker, Icon. PI. III. 1 : 49. 1870. 



The type species of the genus is Macowanites agaricmus 

 Kalchbrenner. 



Fructifications subglobose to hemispherical, epigaeous or 

 hypogaeous, stipitate, fleshy; peridium covering the upper 

 surface of the fructification, thin; stipe distinct below, but 

 may or may not reach to the peridium above as a percurrent 



