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dead wood, common in the New England mountains. Missouri and 
Illinois (Mr. Hall). North Carolina, on Oak trunks (Rev. Dr. Curtis). 
South Carolina (Mr. Ravenel). Occurs, in the White Mountains, with 
the apothecia and curiously flattened stipes of C. hyperellum v. baliolum, 
Ach.,and was, in this condition, formerly taken by me (Syn. Lich. N. Eng. 
p. 79) for an athalline state of the latter species, which scarcely differs 
indeed but in its crust. ——C. hyperellum, Ach., Wahl. Trunks of Abies 
Douglasii, Yosemite valley; and, with Acolium tympanellum, Big Tree 
grove, California (Mr. Bolander). Unknown east of the Rocky Mountains, 
at least in states clearly distinguishable from the last species. — CG. ros- 
cidum, Floerk., Nyl., v. trabinellum, Nyl. On dead wood. Arctic Amer- 
ica (C. chlorellum, 8 trabinellum, Hook.! C. pheocephalum 8, Fr. L. E. ; 
Tuck. Syn. N. E., nom Turn. & Borr.) Hooker herb. Western Massa- 
chusetts, and White Mountains. Also New Bedford (Mr. Willey). Mis- 
souri (Mr. Hall) and a similar lichen sent from South Carolina (Dr. J. H. 
Mellichamp).——C. disseminatum, Fr. (Lich. Suec.n. 16). On dead wood 
in the White Mountains. ——C. citrinwm (Leight.) Nyl. On the thallus 
of Biatora lucida, White Mountains (Mr. Willey).——C. Ravenelii, 
Tuckerm. (Obs. Lich. 1. ¢. 5, p. 389). Old pine palings, South Carolina 
(Mr. Ravenel). —— C. Curtisii, Tuckerm. (Suppl. 2,1.¢.p. 201.) On Rhus 
typhina, in Berkshire, Mass. (Rev. Dr. Curtis) and near Salem (Mr. Rus- 
sell). Also near Albany, N. Y. (Mr. Peck) and near Buffalo (Miss M. L. 
Wilson). What appears the same lichen has occurred also on Alders, in 
the White Mountains (Mr. Willey) and on Robinia pseudacacia in Virginia 
(Rev. Dr. Curtis). Belongs to the same cluster with the next species, 
and exhibits similar internal features (Koerb. Syst. p. 306) but the origi- 
nally colourless stipes, turbinate-lentiform apothecia, and simple, or only 
rarely bilocular, never quadrilocular spores (11-17 micromill. long, and 
4-7mmm. wide) appear to distinguish it.——C. byssaceum, Fr. (Th. Fr. 
Lich. Scand. Rar. u. 48). On Alnus serrulata, New Jersey (Mr. Austin). 
The most minute of our Calicia, and not easily to be detected at all, the 
specimens being even slenderer than the European, which last occurs on 
Alnus glutinosa, but also on other trees. Stipes always black. Spore- 
development feeble. Spores obsoletely bi-quadrilocular (11-21™™™- long, 
and 5-6™™. wide). A rather larger plant, from Rhus venenata, New 
Bedford (Mr. Willey) offers regularly 4-locular spores, 16-23™™- long, 
and 5-9™™™. wide. 
Sect. 3.—SPHINCTRINA, De Not. 
C. microcephalum (Sm.) Turn. & Borr. (Lich. Brit. p.130. Sphinctrina 
Anglica, Nyl. Syn.). Onold fences, Ipswich (Oakes). New Bedford (Mr. 
Willey). Thallus well agreeing with the description of Turner and 
Borrer, as with the later one of Mr. Mudd (Man. Brit. Lich. p. 255) and 
the lichen is referred here by Nylander, l. c.—— C. tubeforme (Massal. 
sub Sphinctrina, Mem. p. 155. 8. microcephala, Nyl. l. ¢., non Turn. & 
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