( 152 ) 
Biatora chiorosticta, Tuckerm. (Obs. Lich. 1. ¢. 4, p. 419, sub Lecid., & 
Lich. exs. n. 139) becomes at length (a fact first observed by my friend 
Mr. Willey) distinctly substipitate ; and Helocarpon, Th. Fr. (Lich. Arct. 
p. 178) may possibly, in this view, well pass, (as it would have passed, in 
the Friesian System) for a stipitate Lecidea. 
The central position, in the present tribe, of Baeomyces, is perhaps 
also indicated by its many-jointed sterigmas (arthrosterigmata, Nyl.) as 
compared with the simpler structure of the same parts in the Cladoniei 
and Lecideei; but the genus passes imperceptibly into forms only with 
difficulty distinguishable, at least in other respects, from Biatora. 
Lecidea, Ach., pro max. p., was shewn by Fries to constitute two 
distinct series, the one (Lecidea, Fr.) separated from the other (Biatora, 
Fr.) by its always black exciple, a marked and sufficiently constant modi- 
fication (upon which compare Stizenb. Beitr. 1. c. p. 137, not.) and these 
series, of which Dr. Nylander also avails himself (Lich. Scand., p. 186) in 
arranging the Acharian genus, as adopted by him, are here received as 
genera. 
The family includes, especially in the sub-families Biatoreei and 
Eulecideei, the great bulk of the tribe; and will doubtless continue long 
to afford, as it has afforded, a field of the most interesting enquiry. 
Sub-Fam. 1.—BAOMYCEI, Fée. 
Apothecia substipitata. 
XLI.-—BHOMYCES, Pers., DC., Nyl. 
Pers. in Ust. Ann. cit. Ach. DC. Fl. Fr. 2, p. 341. Duf. Rév. Clad., cit. 
Nyl. Nyl. Syn. 1,p.175. Baomyces, & Lecidee sp., Ach. L. U., pp. 
108, & 191. Baomyces, et Biatore sect. 1, spp., et sect. 2, sp., Fr. L. 
E. pp. 246, 257, 258. Baomyces, et Parmeliz sp., Wallr. Fl. Crypt. 
Germ. 1, pp. 467, 561. Baomyces, Sphyridium, et Zeorx sp., Flot. 
Lich. Sil.; in Jahresbericht. d. Schles. Gesellsch. 1842. Beeomyces 
max. p., et Lecidew sp., Scher. Enum. pp. 142, 182. Beomyces, et 
Biatore sect. 2, Norm. Con. p. 21. Beeomyces et Icmadophila, Mass. 
Ric. pp. 26,138. Bzomyces, Sphyridium et Iemadophila, Koerb. Syst. 
pp. 151, 273. Anz. Catal. Sondr. pp. 17, &c. Th. Fr. Gen. pp. 68, 81. 
Beomyces et Lecaniz sect., Stizenb. Beitr. 1. c. pp. 166, 171. 
Apothecia patelleformia excipulo proprio 1. cephaloidea margine 
obsoleto, sub-stipitata. Spore ex ellipsoideo subfusiformes, e sim- 
plici nunc bi-quadriloculares, incolores. Spermatia oblonga ; sterig- 
matibus multi-articulatis. Thallus horizontalis, crustaceus, effiguratus 
aut uniformis. 
