Rcsupinatc Hy)}U'U()]}iycctcs. Wakefield ^r* Pearson. 73 



Hypochnus olivaccus Vr. Obs. 2, p. 284; Coniopliora 

 olivacea Karst, Ilattsv. II., p. 162, non aiiclt. nonnull. 



Fructification thinly effused, following the inequalities of 

 the matrix, distinctly olive when fresh, drying to a colour 

 varying between vSaccardo's 

 Olive, Buffy citrine, and Isa- 

 bella colour, the growing mar- 

 gin very thin and whitish. 

 Hymenium setulose imder the 

 lens, and pulverulent with the 

 spores. Cystidia cylindrical, 

 brownish, paler and blunt at the 

 apex, many septate, slightly con- 

 stricted at the septa, 160-290 x 

 12-18/X projected about 75-ioo/x. 

 Basidia elongated, tapering 

 gradually downwards, about 40- 

 80/X long, 7-8,u wide above, with 

 4 curved sterigmata 5-8/i long. 

 Spores rather variable in shape, 

 but more or less elliptical with 

 one side flattened, 10-13x4-6 

 (-7)//, yelloW' -brown. Basal 

 hyphae branched, frequently 

 sepate, with clamp-connections, 

 4-7/x in diameter, clear dark 

 brown. 



This was found 



Coniophorella olivacea 

 Karst. 



Upper portion of cys- 



in several tidium; b, Spores; c, Basi- 

 1 . i I • . ' diiim ; d, Basal hvpha x 550. 



places m uprooted pme stumps, 



which it sometimes takes possession of so completely as to 



cover the under side with several feet of fruiting surface. 



The long septate cystidia give the fresh specimens a velvety 



pruinose appearance, and this, together with the less fleshy 



texture, distinguishes it from the more common Coniophora 



puteana, which is also at times olive in colour. 



This plant is the one identified with Hypochnus olivaceus 



Fr. by Bresadola, who examined the Upsala type. The 



specimen so labelled by Furies in the Kew Herbarium is a 



different species, and this appears to have been the reason 



for the confusion existing in this country as to the identity 



of C. olivacea. Although the name " Coniophora olivacea " 



has been included in the British lists, this appears to be the 



first time that the true plant with cystidia has been found. 



Most of the specimens existing under this name in collections 



are C. puteana. 



