Polyporus pamphlet, but the type specimen we thought inadequate 

 to give a correct idea of it. Mr. Scarfe's specimen, while small, definite- 

 ly fixes it. 



POLYSTICTUS LUTEO-OLIVACEUS, (STIPITATE FORM) 

 FROM W SMALL, AFRICA (Fig. noo). Petaloid, with a short, 

 thick lateral stem, unicolorous, tawny olive (Ridgway). Pileus thin, 

 rigid suborbicular. Surface smooth, dull. Context soft, concolorous. 

 Stem a cm. thick, dilated at base, soft texture. Surface concolorous 

 and similar to that of the pileus. Pores very minute, shallow, regular. 

 Spores not found. 



Fig. 1100. 



Polystictus luteo-olivaceus (stipitate form). 



If Mr. Small had cut off these pilei from the stems and sent them 

 separately they would have been referred to Polystictus luteo-pli- 

 vaceus to which they accord perfectly in every character excepting 

 they are thinner. It is very strange that a species known from many 

 sessile collections, and growing flat, attached by a broad base to the 

 host, should take a form produced from a stipe. When we first received 

 the plant we could not believe that it was a form of Polystictus luteo- 

 olivaceus, and proposed to call it Polystictus pedatus. We have 

 since noted where a stipitate form is recorded as common in Africa, by 

 Miss Wakefield, growing with the ordinary form, and there is no 

 further question in our mind. But before we received these speci- 

 mens, we had seen many specimens of Polystictus luteo-olivaceus, 

 and never a sign of a stipe. 



732 



