(122) 
n. 359) with Lecidea zeoroides, Anz. (n. 357) in company with which it 
grows; notwithstanding the distinctly black hypothecium, and normal 
spores, of the latter. And it is, at any rate, not clear, in view of North 
American specimens before me, the hypothecium of which passes from 
colourless to blackish-brown, that we can exclude any lichen from the 
present place on account merely of the finally blackening hypothecium. 
Stereopeltis, De Not. (Anz. Lich. Lang. n. 381. Rabenh. Lich. Eur. 
n. 682) only known to me indeed in these specimens, which represent 
S. Carestie of the author first cited, is so far scarcely to be distinguished 
from an American lichen (Massachusetts, Mr. Russell, 1848; Pennsylva- 
nia, Dr. Michener; Rhode Island, Mr. J. L. Bennett; California, Mr. 
Bolander) subsumable, it has certainly appeared, under Sarcogyne pri- 
vigna, v. Clavius, Koerb., as sufficiently reconcilable with Flotow’s con- 
ception of the structure of his genus (Koerb. Syst. p. 266) and in fact not 
differing otherwise, except in this interior denigration, from recognized 
forms of it. As respects the spore-character, these blackened states of 
the fruit of L. cervina, prove also to revert to normal conditions; and a 
Sarcogyne on sandstone from California (Mr. Bolander) is to S. privigna 
exactly as Acarospora glebosa, Koerb., to A. smaragdula; the spores 
being always few, and observed not seldom in eights, in the thekes.' 
XXIX.—RINODINA, Mass., Stizenb. 
Stizenb. Beitr. 1. c. p. 169. Tuckerm. Lich. Calif. p. 20. Rinodina, Mass. 
Ric. p. 14; et Mischoblastia, Ibid. p. 40; addita Diploicie sp., Geneac. 
p. 20. Psora, Naeg. et Hepp in Hepp. Abbild. t. 2, et catt. Lecanore 
spp., Ach. L. U. p. 77. Nyl. Lich. Scand. p. 147; in Prodr. Fl. N. 
Granat. p. 31. Parmelia sectt. Placodium pro p., Psora pr. p., et Patel- 
laria pr. p., Fr. L. E. pp. 113,129,149. Dimeleene spp., Norm. Con. p.20, 
t.1,f.10,b.e. Amphilomatis sp., et Rinodina, Koerb. Syst. pp. 112, 122. 
Dimelena, et Rinodina, Th. Fr. Lich. Arct. pp. 94, 124; Gen. pp. 67, 
71. Dimelena, Rinodina, et Diploicie sp., Koerb. Parerg. pp. 52, 
69, 117. 
Apothecia scutelleeformia, margine nunc composito, rarius biato- 
rina. Spore ellipsoidez, biloculares, rarius dein quadri-pluriloculares, 
fuscee. Spermatia oblonga 1. bacillaria; sterigmatibus subsimplicibus. 
Thallus crustaceus, effiguratus aut uniformis. 
1 In a considerable number of specimens from the sandstone, and in others 
from the Yosemite granite, the spores measure 0,008-0,011™™- by 0,003-0,005™™"., 
and it would be easy to assume that the thekes were normally octosporous. Ina 
specimen from Ukiah I find however still larger spores, measuring 0,012-0,018™™- 
by 0,004-0,007™™-, thus corresponding closely with the spores of Lecanora 
oligospora, Nyl. Prodr. p. 80, which the author remarks is perhaps only a variety 
of L. cervina. 
