140 CRYPTOGAMIA. 



3. Parmelia sinuosa, (Sm.) Fr. 



Lichen Icevxgatus, dein sinuosus, Sm. E. Bot. tab. 1852, et 2050. 

 Parmelia sinuosa, Ach. Syn. p. 507 et. 



Parmelia laevigata, Ach. Syn. p. 212 (cf. Mey. Nebenst. p. 50). 

 Parmelia sinuosa, Fr. Liehenogr. p. 63; Montag. Chil. 1. c. p. 131. 



Hab. Hawaii, Sandwich Islands. 



4. Parmelia cervicornis, Sp. Nov. (Tab. 2, fig. 1). 



P. thallo foltaceo expanse- cartilagineo laevigata glaucescente, laciniis elon- 

 gatis laxe implexis vel subimbricatis linearibus plano-concavis irregida- 

 riter subdichotomo-divisis apice bifidis obtusis, subtus atris papillosis 

 vel prwsertim ad margines villoso-fibrillosis ; apotlieciis scutelliformibus 

 subpedicellaiis demum explanatis, disco badio margine integerrimo. 

 — Sporw in thecis suboctonce, majusculce, ovoideo-ellipsoidece, simplices, 

 liyalinod. 



Hab. Forests of Hawaii, Sandwich Islands. 



Thallus foliaceous, horizontal, appressed, cartilagineous, smooth, 

 glaucescent, of loosely imbricated, elongated-linear, plano-concave 

 lobes, which are irregularly dichotomous, and with forked, divergent, 

 obtuse tips. The under side is black and covered rather sparsely with 

 small papillae, which pass here and there, especially at the margins, 

 into branched, densely crowded fibrillae. Apothecia large, elevated- 

 subpedicellate, scutelliform, at length explanate, and the dark chestnut- 

 colored disk more or less covered by the incurved portions of the at 

 first entire, but at length coarsely crenate-cut margin. Spores largish, 

 ovoid-ellipsoid, simple, hyaline. — Nearest to the last species, but itself 

 approached closely by the largest states of 'P. Camtschadalis, Eschw. 

 (Borrera, Ach., Parm. cirrhata, Fr. PL Homon. p. 283 ? e dessr. P. 

 Americana, Montag. Chil. 1. c. p. 137.) Of the latter I possess nume- 

 rous specimens, both from South America and India, and find them 

 constantly different from our Lichen in their Everniaceous habit, which 

 reminds one at once rather of Evernia fiirfuracea, than of any true 

 Parmelia. There is no question of the generic position of our plant, 



