390 PROCEEDINGS OF THE AMERICAN ACADEMY 



ellipsoid, the tips often acutish ; diblastish, at length blackish-brown ; 

 the length scarcely exceeding twice the diameter. Nearly akin to C 

 hyperellum and C. tracheliniim ; but differing from both in the crust, and 

 especially in the club-shaped apothecia and large spores, which exceed 

 in size those of G. roscidum. 



Trachylia leucampyx (sp. nov.) : thallo tenui pulveraceo dein 

 subcontiguo rimoso e viridulo cinerascente ; apotheciis minusculis 

 innato-prominulis (subelevatis), disco subplano atro margine intus albo- 

 pruinoso cincto. Sporie octonje in thecis lineari-clavatis, e cocciformi 

 mox oblonga;, sa^pius o-blastaj, dein fuscescentes 2- rarius 3 - 4-septatje 

 ad septa constricta; diam. 2 - 3-plo longiores. On trunks, Monte Verde, 

 island of Cuba, Mr. Wright. Thalhis very thin, leprous, but becoming 

 here and there compacted and cliinky, and from greenish at length 

 ash-colored. Apothecia small, a few of the larger ones occasionally a 

 quarter of a line in diameter, rounded, or occasionally oblong, innate, 

 at length a little elevated in the manner of T. tympanella, but (like 

 T. Javanica (M. & V. d. B.), Nyl.) not dilated above ; the black mar- 

 gin, which, as in T. Javanica, is always thicker than in the European 

 species, conspicuously white-powdery within. The elevation of the 

 apothecia is comparatively slight, and often even obscure, and they 

 thus contrast evidently enough with the remarkably conical fruit of 

 T. Javanica. Spores in long and narrowed spore-sacks, colorless and 

 smallish at first, and from short-obtuse-ellipsoid (cocciform, Koerb.) be- 

 coming oblong, and commonly 3-blastish, crossed next by colored, 

 rather irregular dissepiments, and finally dark brown, and for the 

 most part twice, or much more rarely thrice, or even four times sep- 

 tate, and more or less strongly constricted at the dissepiments ; the 

 length from twice to thrice, or more rarely four times, exceeding the 

 diameter. This lichen is nearest allied to a curious subtropical type of 

 the Caliciei, found by my liberal correspondent, the late Dr. Joseph 

 Hale, on Cypress trunks in Louisiana, in 1851, and named by me (in 

 herb. Fries), the following year, Trachylia Pyrgilla. Mr. Wright has 

 since found the plant not uncommon in the island of Cuba, and he de- 

 tected it also (as botanist of the U. S. North Pacific Exploring Expe- 

 dition) in the Bonin Islands, southeast of Japan. From the last, 

 which is inseparable from the American lichen, the Java plant found 

 by Junghuhn, and described by Montagne and Van den Bosch, in 

 1856, as CaUcium Javanicum (Mont. Syll. p. 357, M. & V. d. Bosch, 

 Lich. Jav. p. 54) can scarcely differ. Dr. Ny lander referred the lat- 



