102 REPORT ON TWO BOTANICAL COLLECTIONS FROM 
LICHENES. By G. Masser, F.L.S. 
SPHJEROPHORON COMPRESSUM, Ach. Meth. Lich. (1803), p. 135. 
On stones. Summit of Roraima, WeConnell & Quelch, 506. 
Cape Horn; Chili; W. Indies; Europe; India; Ceylon. 
CLADONIA RANGIFERINA, Hoffm. Flor. Germ. (1795), p. 114. 
On the ground. Summit of Roraima, MeConnell & Quelch, 507 & 520. 
Cosmopolitan. 
PARMELIA DICTYORHIZA, Massee,n.sp. "Thallus membranaceo-cartilagineus, substellatus, 
repetito dichotomo-laciniatus, cretaceus, subtus niger, spongiosus. Apothecia 
ignota. 
Thallus thin, cartilaginous, radiating from a centre in an irregularly stellate manner, 
repeatedly dichotomously divided, chalk-white above, black and spongy below, the 
spongy stratum composed entirely of closely septate brown hyphe 11-12 » thick, 
arranged in the form of an irregular network. Apothecia unknown. Laciniz about 
2 mm. wide. 
On the ground. Summit of Roraima, McConnell & Quelch, 53. 
Allied to .P. hypotropa, Nyl., but separated from this and every other described species 
in the reticulate structure of the spongy lower surface of the thallus. | 
PARMELIA PERFORATA, Ach. Lich. Univers. (1810), p. 410. 
On branches. Summit of Roraima, Je Connell & Quelch, 503 & 513. 
Central and N. America ; Central Africa ; Polynesia. 
ALECTORIA OCHROLEUCA, Nyl. Prod. Lich. (1857), p. 46. 
On branches. Summit of Roraima, McConnell & Queich, 504. 
Mexico; United States; Europe; Himalaya; Japan; Australia. 
