A NEW BRITISH WEISSIA. 39 



Pileus 2 \ in. across, very variable, sometimes mucli elongated, 

 flabelliform, zoned, pallid behind, rufous in front, silky striate ; 

 stem variable, obsolete or much elongated ; pores minute, T \^ in. 

 across, pale ochre. The same species occurs on Rio Negro. Poly- 

 porus fibro so -radians, Mont, is very near, but if the same not the 

 typical form. 



— 124. Folyporus (Pleuropus) fractipes. B. cj- C — Ochraceus ; 

 pileo reniformi, irregulari, rugoso, tomentoso, hie illic hispidulo ; 

 stipite irregulari distorto, quandoque postice adnato, pulverulento ; 

 poris minimis. No. 2858. Car. Inf. Ravenel. No. 4706. Car. 

 Inf. Curtis. 



Pileus nearly 2 in. across, reniform, irregular, rugose, tomentose, 

 here and there hispid, ochraceous ; stem 1-1^ in. high, 2-4 lines 

 thick, irregular, distorted, sometimes adnate behind, pulverulent ; 

 pores minute, r |^ in. across. 



— 125. Polyporus (Pleuropus) dealbatus. B. § C— Rav. fasc. 3, 

 No. 10. Pileo convexo, zonato, quandoque sulcato, dealbato ; 

 stipite elongato, distorto, pruinoso ; hymenio concavo, albido ; 

 poris microscopicis. No. 1524. Santee River, Ravenel. On the 

 ground in woods. 



Pileus f-lf in. wide, convex, zoned, sometimes sulcate, becoming 

 whitened ; stem 2 J in. high, \ in. or more thick, distorted, prui- 

 nose ; hymenium concave, whitish ; pores microscopical, ^^ in. 

 across. Sometimes mesopodous. . _ 



A NEW BRITISH WEISSIA. 



Weissia truncicola. De Notaris, Epilogo delta Briol. Ital., p. 

 598 (Journ. Bot., 1871, pi. cxix., f. 2). Dioicous ? in large dense 

 tufts, interwoven at base with branched radicles, bright green. 

 Stem innovating dichotomously, 1-2 in. high, flexile, reddish, bear- 

 ing lax radicles at the lower part from the axils of the leaves. 

 Leaves approximated, erect when moist, and often somewhat secuncl 

 on the second shoots, rather soft, papillose at back, from a narrowly 

 lanceolate base, gradually subulate, channelled, with a thin nerve 

 reaching the apex, the margin not revolute, sharply denticulate 

 above, and on the back of the nerve ; when dry strongly cirrhate 

 and twisted. Cells at base large cylindrico-vesicular, the rest 

 small, quadrate, or subhexagonal, filled with deep green chlorophyll. 



Growing in expanded tufts, like Weissia cirrhata, the leaves 

 resembling those of Weissia B?mntoni, but longer, and the margin 

 not revolute. 



Hab. On the base of the trunk of an oak in Lower Nuthurst, 

 Sutton Park, Birmingham. (J. Bagnall, Aug. 27, 1870.) Iden- 

 tical with original specimens gathered by Carestia in the Val 

 d'Intrasca, near Verbano. R. Braithwaite, 21. D., in Journ. Bot. 

 1871, p. 289. 



