392 PROCEEDINGS OF THE AMERICAN ACADEMY 



loides pulchrum geniculis acetabuliformibus crispifoliosis. Dill. Hist. 

 Muse, p. 100, t. 16, f. 23. Floerk. Clad. 1. c. On rotten logs, Monte 

 Verde. Thallus of rather elongated, much and narrowly-lobed squa- 

 mules, which are greenish-straw-colored above, and very white beneath. 

 Podetia, in the more simple states of a, turgid, and dilated above into 

 funnel-shaped expansions, which are finally more or less irregularly 

 proliferous-ramose, and, as well as the dilated axils, often squamulose ; 

 the fertile ones at length much divided above and crowned by the clus- 

 ters of brownish (from pale at length dark-brown) apothecia. This 

 state, which exceeds at length four inches in height, appears quite anal- 

 ogous to C.ficrcata, var. crispata, though the larger and more branched 

 specimens are more readily comparable with fine ones of G. uncialis, 

 var. turgescens. Var. /3 is a paler, more slender, much elongated form, 

 attaining to the height of eight inches ; the less dilated, often subcylin- 

 drical podetia extended upwards by commonly a single proliferation, 

 and the gaping but not dilated axils elegantly fringed by the dissected 

 squamules already described, which retain above their greenish hue, 

 and thus contrast pleasingly with the white podetia. The scyphiform- 

 dilatation of the podetia above, which is more or less evident in a, as 

 in the already cited form of G. furcata, disappears at length entirely 

 in /3, as in G. furcata, var. racemosa ; but the Cuban lichen differs from 

 the latter (occurring in an equally fine condition in Venezuela, Mr. 

 Fendler) in a simpler and less-branched habit, in color, and in the ele- 

 gant fringe of squamules which borders (and often conceals) its gaping 

 axils. It is this last, most developed condition of the lichen, as I think 

 scarcely doubtful, which Dillenius describes and figures, from a speci- 

 men brought by Catesby from the Isle of Providence. He places it 

 next to, and compares it with, G. uncialis. But Floerke more satisfac- 

 torily referred the described plant, which he had not seen, to his " Cla- 

 doniae infundibuliformes," placing it next to G. squamosa ; and remark- 

 ing, in a note at the end, that G. furcata, var. crispata, in itself consid- 

 ered, would scarcely be separable from the same section. The cited 

 variety of G. furcata is represented in North America by a rich series 

 of forms ; and one of these from the New England mountains, with the 

 axils crested with dissected squamules, is exceedingly like, except in 

 the important respect of color, small states of the present. G. furcata, 

 var. cristata, Fr., also an inhabitant of our mountains, is a form of the 

 last-mentioned variety in which the dilated axils, and especially api- 

 ces, are fimbriate-cristate ; but the crests are due here (so far as my 



