Massee. — The Ftingus Flora of Nciv Zealand. 13 



Pileus sometimes almost triangular, narrowed behind, tomen- 

 tose when yoimg, margin fibrillose, often densely imbricated. 



Polystictus adustus. Fries, Hym. Eur., 549 ; Sacc, Syll. vi, 

 no. 5146 ; Austr. Fung., p.' 123, Hdbk. N.Z. Flora, p. "^607. 



EfEuso-reflexed or entirely resupinate, forming large patches 

 5-25 cm. across ; flesh thin, whitish, flexible when moist ; pileus 

 greyish, downy, indistinctly zoned, often rugulose ; tubes very 

 short ; pores minute, rounded, whitish, then dingy-grey or lead- 

 colour, blackish when dry, averaging 3-4 to 1 mm. of space ; 

 margin sterile, whitish ; spores colourless, 4-5 x 2*5 /u,. 



On stumps, &c. New Zealand. Australia, Tasmania, India, 

 Europe, United States, Cuba. 



Very variable, sometimes entirely resupinate and resembling 

 a Porta, at other times the margin becomes free. Distinguished 

 •by the grey pores and white margin. The pores become dark 

 when bruised. 



Polystictus catervatus, Berk., Fl. N.Z., ii, p. 180, tab. cv, fig. 1 ; 

 Hdbk. N.Z. Flora, p. 609 ; Sacc, Syll. vi, no. 5918. 



Usually densely crowded ; pileus about 1 cm. across, fan- 

 shaped or irregularly reniform, margin often lobed or torn, 

 narrowing below into a short, slender, stem-like base, white, 

 silkily fibrillose ; pores very shallow, minute, irregular, white ; 

 dissepiments thin, edge minutely toothed. 



On split stems of Podocarpus spicata, Mission Station ; on 

 bark, Wellington, New Zealand. 



Very frequently the adjoining pilei grow together at the 

 margin, and form a continuous membrane. Very thin and deli- 

 cate, altogether white. An endemic species, and lapparently rare. 



39. Poria, Pers 



Entirely resupinate ; flesh usually very thin, attached through- 

 out to the substratum ; tubes usually short. 



Poria, Persoon, Syn., p. 542. 



In all probability many species included under the present 

 genus may prove to be nothing more than degraded resupinate 

 conditions of species of Fomes, Polystictus, or Polyporus. 



Poria vaporaria. Fries, Syst. Myc, i, p. 682 ; Fl. N.Z., ii, p. 180 ; 

 Hdbk. N.Z. Flora, p. 610 ; Cooke, Austr. Fung., p. 155 ; Sacc, 

 Syll. vi, no. 6035. 



Broadly effused, thin, inseparable, the white mycelium pene- 

 trating the matrix ; pores large, angular or sinuous, white, then 

 cream-colour, forming a continuous stratum. 



