MOUNT ROT? ATM A IN BRITISH CI'IWA. 301 



IV. THALLOPHYTA. 



FUNGI. By (J. Massee, F.L.S. 



Piioma Psammisle, Massee, n. sp. Maculae nullae; perithecia epidermide tecta, gregaria, 

 500 jot diam., atra, ostiolo papillato pertusa ; sporse ellipticae, 2-guttulatae, 10-11 x 3 n. 



Spots absent ; perithecia gregarious, covered by the grey raised epidermis, Lenticular, 

 averaging 500 p in diameter, black, glabrous ; ostiohun minute, papillate; texture paren- 

 chymatous, dense, olive; spores hyaline, elliptical, ends obtuse with two minute polar 

 guttulae, 10-11 X 3 /j.. 



On dead branch of Psammisia coriacea, N. E. Brown. Summit of Boraima, McCownell 

 Sf Quel clt. 



Allied to P. slid tea, Berk, et Broome. 



Echinobotryum roseum, Massee, n. sp. Mycelium tenuissimum vix manifestum, 

 allium; hyphoe fertiles erectae, septate, hyalinae, 1 p. crassae. Conidia in apicibus 

 hypharum fertilium densius aggregata, sessilia, fusoidea, 10-17 X 6 /i, roseo-tincta. 



Sterile hyphse prostrate, hyaline, septate, branched, about 4 p thick, loosely interwoven 

 into a very thin white layer ; fertile hyphas erect, septate, simple, hyaline, 4 p thick, 

 apex minutely nodulose and producing numbers of sessile spindle-shaped, pale rose- 

 coloured conidia measuring 15-17x6 u. 



Parasitic on Octomeria parvifolia, Ilolfe. Summit of Boraima, McCownell Sf Quelch, 

 696. 



Allied to E. here, Sacc, from which the present differs in the form and colour of the 

 spores. 



Stemthylitjm ericoctonum, A. Br. & de Bary, Krankh. d. Pflanz. (1851), p. IS, tab. 2. 



On living branches of Leitgebie Tmthwrnia/na, Oliver. Summit of Boraima, McCownell 

 Sf Quelch. 



Europe. 



Macrosporitjm ramulosum, Sacc. Fung. Ital. tab. 851 (1881). 



On fading leaves of Tqfieldia Schombvrgkiana, Oliver. Summit of Boraima, MoConnell 

 Sf Quelch. 



Europe, and in the Andes of Colombia. 



Capnoditjm fibrosum, Berk, in Hook. Fl. Nov. Zel. ii. (1855), p. 209. 



Forming a black bristly pile on living 1 twigs of Psammisia. Summit of Boraima, 

 McConnell Sf Quelch, 662. 



N. Zealand. 



ltlllPIDONEMA membranaceum, Sacc. Syll. vi. (1888), p. 688. 

 On bark. Boraima, 8000 ft., McCownell Sf Quelch, 508, 526. 

 Amazon Valley ; Marianne Islands. 



