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der.—— B. resine (Fr.) (Lecidea, Fr. Obs. Myc. Nyl. Prodr. p. 117; 
Scand. p. 213. Peziza, Fr. Syst. Myc., 2, p. 149) is probably not a lichen, 
notwithstanding its behaviour with iodine. It occurs here on the exposed 
and indurated resin of the White Pine, where it was first detected at 
New Bedford (Mr. Willey) and similarly on the Pitch Pine, in Vermont 
(Mr. Frost) as on Larch in New Jersey (Mr. Austin). Another plant, 
similar to this as respects paraphyses and spores, but with black apo- 
thecia, not unlike those of Lecan. cervina, v. privigna, f. simplex, occurs 
on the resin of White Pine, in Vermont (Mr. Frost) but has afforded no 
blue reaction with iodine. 
XLIII.—HETEROTHECIUM, Flot., emend. 
Flot. in Bot. Zeit., 1850, p. 369, 553, pro max. p. Heterothecium, Mont. 
& V.d. Bosch Lich. Jav. p. 36. Lecanore sp., et Lecidex sp., Ach. 
Lecanore et Lecidee spp., Fée Ess. p. 107, 114; Suppl. p. 103, 111. 
Biatorze et Lecides spp., Fr. L. E. pp. 259, 335. Megalospora, Mey. 
& Flot. in Nov. Act. Nat. Cur. 19, Suppl. Mont. Apercu Morph. p. 11. 
Heterothecium, Biatore spp., et Sporopodium, Mont. in Ann. Sci. 
Nat.; Guy. p. 36, t.16,f1; Syll. p. 338; M. & V. d. Bosch Lich. Jay. 
p. 36. Lecidesw sect. A, * * * * * Nyl Enum. Gén.1.c. p. 122; 
Ligh. exot. in Ann. Sci. Nat. 1. c. p. 224, 260; in Prodr. Fl. N. Gran. p. 
65; Syn. Lich. N. Caled. p. 49. Tuckerm. Obs. Lich. 1. ¢. 6, p. 280. 
Megalospora, Psorothecium, Bombyliospora, Lopadium, Heterothe- 
cium, et Sporopodium, Mass. Ric. pp. 105, 114; Alc. Gen. p.9; Esam. 
p. 16. Megalospora, Bombyliospora et Lopadium, Koerb. Syst. p. 210, 
256; Parerg. p. 174, 228. Mycoblastus, Bombyliospora, et Lopadium, 
Th. Fr. Gen. p. 83, 89. Lecidex sp., Psorothecium, et Heterothecium, 
Stizenb. Beitr. 1. c. pp. 160, 162. 
Apothecia patelleformia, excipulo proprio margine sub-incrassato 
subinde lecanoroideo. Spore plerumque magne, ex ellipsoideo 
oblonge, 1. simplices 1. bi-pluriloculares 1. muriformi-multiloculares, 
subincolores 1. fuscescentes. Spermatia (quantum observ.) ellip- 
soidea 1. oblonga; sterigmatibus simplicibus. Thallus crustaceus, 
uniformis. 
The monograph of Heterothecium promised by the author of the genus 
did not appear; and little remains to illustrate his conception of it, but 
some cursory remarks in the cited letter to Fries (Bot. Zeit. 1. c.). Together 
with much going to shew that the author’s investigations were still far 
from complete, we find here, grouped around H. tuberculosum, as centre, 
1 The genus was named indeed, and the European lichens taken to belong to 
it, reckoned, in Koerber’s Grundriss d. Cryptogamenkunde, 1848, two years before 
the publication in the Bot. Zeitung ; but without descriptions. 
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