94 STICTA. 



5. S. pallida, Hook. ; thallus irregularly wide-lobed, mem- 

 branaceous, smoothish ; glaucescent ; beneath villous, pale ; the 

 rounded, sparingly sinuate lobes repand or crenate. Apothecia 

 sub-marginal, middling to ample ; disk chestnut, bordered rather 

 widely by the lobate- crenate margin. Spores acicular with 

 more or less attenuate tips, 8-12-locular, scarcely coloured, ^ 

 mic. S. Kunthii, Del Stict. p. 126. Eicasolia pallida, Nyl. 



i. 1, p. 372. 



Trees, Mexico, Krempelhuber Exot. Flecht. 1868; and else- 

 where in tropical and austral America. Another well-marked 



species ; my specimens of which are from Venezuela (Fendler), 

 New Granada (Lindig n. 2514, from which I cannot separate n. 

 13 of the second series, which is ticketed Eicasolia crenulata), 

 and Bolivia (Mandon). 



* * Thallus lax, and, for the most part, large- or long-lobed ; 

 the under side bearing cyphels : or spotted. Gonidia agreeing 

 generally with those of the first section. Stict a, Nyl. 



\ Thallus bearing cyphels, which are now (n. 5) urceolate, and 

 now (n. 6) sorediiform, poivdery heaps. 



6. S. damcecornis (Auct. pr. p.); thallus ample, loosely ex- 

 tended, membranaceous- coriaceous, smooth or now pitted ; glau- 

 cescent (fuscescent, rufous or now yellowish) beneath from pale 

 becoming dark-brown with a similarly varying, mostly thin nap 

 (which is now deficient), besprinkled with urceolate cyphels; 

 lobes elongated, now wide and rounded, flexuously sinuate or 

 sub-piunatifid, and now narrowed into linear, dichotomously 

 multifid, at length densely intertangled divisions; apothecia 

 sub-marginal, middling-sized; disk chestnut and blackening; 

 the entire (or now irregularly dentate) margin often pilose, of 

 the colour of the thallus. Spores fusiform, typically 4-locular, 



colourless when free, ^^ mic. S. damcecornis & S. laciniata, 



Ach. L. U. p. 446, pro p. Nyl. Syn. 1, p. 354, 356 pro max. p. 



On trees, Mexico, Nylander ; and generally throughout the 

 tropics. 



One of the best-known of tropical lichens, and (confused 

 more or less with S. quercizans) very early observed and de- 

 scribed ; the specific name being derived from the descriptive 

 phrase of Plumier, 1703. This was the sub-linear, many-cleft 

 plant, the segments of which, as Dillenius says (Hist. Muse. t. 



