DECADES OF FUNGI. 173 



549. P. (Mesopus) exilis, n. s. ; pileo orbiculari tenui umbilicato 

 rufo-badio zonato rugosiusculo ; stipite gracili umbrino pruinoso ; by- 

 menio cinereo ; poris punctiformibus, trama leviter sulcata; contextu 



pallido. Spruce, n. 31. 



Hab. On the ground. Panure. 



Pileus 1 inch across, orbicular, thin, coriaceous, umbilicate, liver- 

 coloured, zoned, slightly wrinkled, substance pallid. Stem four inches 

 or more high, scarcely a line thick, umber, pruinose. Hymenium 

 cinereous ; pores punctiform, with the trama slightly sulcate. 



Differs from P. oeellatus in the pale colour of its substance, smaller 

 size, etc. : it is closely allied, but on a more delicate scale, 



550. P. (Mesopus) Parmula, n. s. ; pileo tenui papyraceo orbiculari 

 umbilicato lobato 1. crenato nitidiusculo rufo-badio zonato ; stipite gra- 

 cili umbrino pruinoso ; hymenio ex albido brunneolo ; poris minutis 

 subangulatis ; contextu pallide umbrino. Spruce, n. 34. 



Hab. On the ground in Caatingas. Panure. 



Pileus 1-2 inches across, thin, papyraceous, umbilicate or some- 

 times infundibuliform, red-bay, painted with many zones, tolerably 

 even ; margin lobed or crenate. Stem 3-7 inches high, i-3 lines 

 thick, umber, pruinose, sometimes fasciculate, even or nodulose, often 

 rooting deeply. Hymenium at first nearly white, then tinged with 

 brown; pores minute, ^ of an inch across, slightly angular, not 



pileo orbiculari 

 infundibuliformi badio zonato, margine crenato ; stipite gracillimo ; 

 hymenio e pallido cinerascente ; poris minutis subangulatis. Spruce, 



n. 21, 77. 



Hab. On the ground in Caatingas. Panure'. A very common 



sulcate ; substance pale umber. 



551. P. (Mesopus) marasmioides, n. s. ; pusillus ; 



species. 



PUeus i-f of an inch across, thin papyraceous, infundibuliform, 

 bay, zoned, smooth; margin crenate. Stem l\-^\ inches high, i-l 



memum 



line thick, umber, pruinose, often forked, rootmg. n 



pale then cinereous ; pores minute, -^ of an inch across. 



This is closely aUied to P. Parmula, but it does not appear to be 

 merely a dwarf state of that species- The pUeus is essentially infundi- 

 buliform, the pores are smaller, and their tint different. It is a very 



elegant production. , 



No. 6 is a distinct species, which I have named in my herbarium P. 

 ^etipes, but I have not sufficient materials to establish its characters. 



