282 PROCEEDINGS OF THE AMERICAN ACADEMY 



incolores, e cocciformi oblongo-ellipsoidece, muriformi-pleioblastfe (ser. 

 transv. 6-12, long, in medio 4-5), diam. 1^-3° longiores. Trunks 

 in the island of Cuba, Mr. Wright (Lich. Cub. n. 233). With the 

 thallus of L. Domingensis, and similar but smaller apothecia, this 

 lichen presents the muriform spores of Heterothecium. In the latter 

 group L. leucoxantha, Spreng. (Lich. Cub. n. 234) approaches it 

 nearest, differing in its monosporous sporesacks, and larger, polyblast- 

 ish (ser. tr. 18-20, long, in med. 8) spores, as well as in thallus, &c. 

 According to Dr. Nylander (1. c.) the L. leucoxantha, v. bispora of his 

 Enum. Gen. p. 125, relates to this lichen, but neither this name, nor 

 that of L. bifera, Nyl. Lich. N. Caled., a plant certainly not remote 

 from ours, is quite appropriate to a species the spores of which occur 

 in twos, threes, and fours, in the sporesacks. 



Lecidea (Heterothecium) turbinata, sp. nov. : thallo e granulis 

 applanatis in crustam verrucoso-rugulosam dein conglobatis pallido- 

 luteo-fuscescente ; apotheciis minutis turbinatis excipulo pallide fusculo 

 basi stipitiformi-constricto margine integro discHm e concavo planum 

 rufo-fuscum hypothecio obscuriore impositum demum a^quante. Sp. 

 in thecis oblongis singuloB, magnna, palhde fuscescentes, oblonga^, muri- 

 ^brmi-polyblastaj (ser. transv. 30-50, long. 8-10) diam. 5-6° lon- 

 giores. Paraphyses distinctte. Encrusting Goccocarpia parmelioides, 

 and mosses, in the island of Cuba, Mr. Wright. At once distinguish- 

 able from other species of Heterothecium by its substipitate apothecia, 

 resembling those of L. pezizoidea, Ach., upon which Dr. Koerber 

 founds his Lopadium. Hypothallus, so far as observed, very thin, and 

 pale. Disk colorless within ; resting upon a blackish-brown hypothe- 

 cium. Paraphyses conglutinate at first, as observed in the related 

 European species by Koerber (Par. p. 175), but soon separating into 

 a loose mass of long, now branched filaments, which are perhaps capitu- 

 late, but by no means so distinctly as in the cited Northern lichen (Th. 

 Fr, Lich. arct. p. 201, and herb.). The apothecia of the latter are also 

 less turbinate, this feature being remarkably conspicuous in the tropical 

 species. 



Lecidea (BuelUa) parasema (Ach.), Fee. Buellia, Koerb. Syst. 

 Lich. Germ. p. 228. Notwithstanding some obscurity in the general 

 remarks of Fee, Suppl. p. 101, the descriptions and figures of the spores 

 both of this and of his L. glaucotheca {L. disciformis, v. ccesio-pruinosa, 

 Nyl.) appear to me to leave no question that the lichen (with " bilocular 



