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earth-lichen of California (Mr. Bolander) which also differs, like the 
Italian, in the colours, from Z. sqgualida. Thallus of our plant undistin- 
guishable generally, above, from that of LZ. squalida, except that the 
range of coloration is from glaucescent to livid-fuscescent, passing finally 
into black; but extending, below the surface of the earth, into irregularly 
dividing stems which reach but scarcely exceed half an inch in length. 
Apothecia also generally comparable with those of Z. squalida, and often 
conglomerate. Spores from dactyloid becoming clavate, and staff-shaped ; 
plurilocular; sometimes not exceeding 0,016-30™- in length, and then 
0,0035-60™™- in width, but more often longer and narrower, or 0,024—48™™- 
long, and 0,003-50™- in width. In one specimen I find the younger 
apothecia commonly bordered below by white fibrils, of which there is no 
trace in the mature ones, or, generally, in the other specimens. —— L. rugi- 
nosa, Tuckerm. (Lich. Calif. 1. c.) from serpentine rocks of California 
(Mr. Bolander) is another member of the present section, the slenderer 
spores of which are quite as perfectly acicular (0,025-41™- long, and 
0,0025-30™™- wide) as those of our alpine ZL. flavovirescens (Dicks.) Borr. 
Eulecidea is thus sufficiently analogous with the corresponding central 
groups both of Biatora, and Lecanora. And, like these genera, it affords 
an example of the myriosporous anomaly (Sporastatia, Mass., to be 
compared with Biatorella and Acarospora) in the, in all respects, well 
distinguished L. morio (DC.) Scher., inhabiting Arctic America (Dr. 
Kane) as well as the alpine region of the Rocky Mountains (Dr. Parry) 
and the White Mountains. 
XLV.—BUELLIA, De Not., emend. 
Buellia, Tuckerm. Lich. Calif. p. 25. Lecidea, Naeg. in Hepp Flecht. 
Eur. t. 1. Buellia et Lecidex sect., De Not. Framm. Lich. 1. c. p. 22. 
Lecidexspp., Ach. Fr.L.E. Patellarise spp., Mey. Wallr. Catolechia 
pr. p., Diplotomma, et Lecidew spp., Flot. in Koerb. Grundr.; in 
Linnea, 1849; in Bot. Zeit. 1850, pp. 367, 380. Dimaura pr. p., et 
Abacina pr. p., Norm. Con. p. 238. Catolechia, Diploicia, Diplotomma, 
Buellia, Leciographa, et Rhizocarpon, Mass. Ric. in locc., Geneac. p. 
14. Koerb. Syst.; Parerg. Lecidea, sect. B, a, spp., et d, spp., Nyl. 
Enum. Gén.1.¢. p.123; Prodr. p. 119; Lich. Scand. p. 232; Lich. And. 
Boliv. 1. c. p. 381; in Prodr. Fl. N. Gran. p. 69. Catolechia, Buellia, 
Leciographa, et Rhizocarpon, Anz. Catal. Sondr. pp. 63, 87; Manip. ; 
Symb. p. 19; Neosymb. p. 12. Catolechia, Buellia, et Rhizocarpon, 
Th. Fr. Lich. Arct. pp. 175, 225; Gen. pp. 80,91; Lich. Spitzb. p. 43. 
Buellia, et Rhizocarpon, Stizenb. Beitr. 1. c. p. 160. 
Apothecia patelleeformia excipulo proprio atro. Spore ex ellip- 
soideo oblonge, e simplici bi-quadri-loculares, 1. demum muriformi- 
multi-loculares, fuscescentes. Spermatia oblongal. bacillaria; sterig- 
matibus simplicibus. Thallus crustaceus, effiguratus aut uniformis. 
