(153) 
The natural position of B. roseus, Pers., the type of Beomyces with 
Fries, and Flotow, as a member of the same genus with B. byssoides (L.) 
Scher. (Sphyridiwm, Flot.) is indicated for me, with sufficient distinctness, 
by B. absolutus (Venezuela, Fendler; Wright Lich. Cub. n. 23, 24) and per- 
haps illustrated as well by a curiously suggestive condition of Cladonia 
mitrula (Alabama, Peters). Nor is B. absolutws without value, possibly, 
in determining the place of B. eruginosus (Scop.) DC. (Biatora iema- 
dophila, Fr.) the generally admitted and significant resemblance of which 
to B. roseus is scarcely invalidated, either by the frequent presence of an 
accessory thalline border, or by the clearly patelleform type of its more 
normal, and yet sub-stipitate apothecia. ! 
Fifteen species of Beomyces, as here taken, are reckoned by Nylander 
(Syn. 1. c.) of which the four European ones are common to the United 
States. Two of these are also Australian, and a third occurs in Nepal 
(Nyl. 1. c.). The remaining eleven species are either tropical or austral. 
B. absolutus, Tuckerm. Suppl. 2, p. 201, a native of Venezuela and 
Cuba, has occurred also on wet rocks at Hillsborough, North Carolina 
(Rev. Dr. Curtis) and on the earth, in Alabama (Mr. Peters).——B. fin- 
goides (Sw.) Ach., regarded by Fries (S. O. V. p. 250) as a condition of 
B. roseus (‘quo australius natus, eo longiora’ exserens ‘podetia’) an 
opinion which later investigation has done little to invalidate, is a native 
of the West India islands; and also, according to Nylander, of Mexico. 
Sub-Fam. 2. — BIATOREI. 
Apothecia subsessilia, excipulo disco pallidiori. 
XLII.—BIATORA, Fr. 
Fr. in Vet. Ac. Handl. 1822, p. 263; 8.0. V. p. 250; L. E. p. 247; max. p. 
Esch. Syst. p. 17. Mont. Pl. Cell. Cub. p. 195; Apercgu Morph. p. 11, 
max. p. Tuckerm. Syn. N. Eng. p. 57, pr. p.; Lich. Calif. p. 23. Le- 
cides spp., Ach. L. U. p. 32. Fée Ess. p. 51. Scher. Spicil. p. 101; 
Enum. p. 94. Borr. in Hook. Br. Fl. 2, p.173. Eschw. Lich. Bras. 1. ¢. 
p. 241. Nyl. Enum. Gén. p. 119; Lich. Scand. p. 185; in Prodr. Fl. 
N. Gran. p.53; Syn. Lich. N. Caled. p. 41; Addend. nov. ad Lich. Eur., 
in Flora Ratisb. Tuckerm. Obs. Lich. 1. ¢. 5, p. 417; 6, p.272. Patel- 
larie spp., Meyer. Wallroth. Psora, et Biatora, Flot in Koerb. Grundr. 
1 Montagne, at any rate (Ann. Sci. Nat. 4, 8, p. 298) subordinating the differ- 
ences in the thallus, and in the spores, determined B. absolutus, in Fendler’s 
specimens, as Biat. iemadophila, v. stipitata. The latter is indeed a peculiarly 
northern species, but putting out of sight the difference in the crust of the tropical 
lichen, its apothecia are well-comparable with naked (or normal) ones of B. erug- 
inosus. 
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