ADDENDA.
p. 2. Note 2. Tho common usage o f tlic words Filz and Schwamni is not
witliout exception; Nagel Schwämme, for example, is the common name of
Agaricus esculentus. See p. 118.
p. 7. The dry-rot in fir-built ships is caused by Merulius lacrymans, but in
oak-built ships by Folgporus hyhridus.
p. 10. Of the Orders mentioned in this page, Fh^agmotrichacei has been
suppressed altogether, and JEcidiac^ has been substituted for Cceomacei, as
affording a more natural group.
1>. 44. Much against my will, I am forced to adopt tho genus Peronospora
as limited by Caspary, not by Corda, in consequence of the double fruit so
different from anything in genera allied to B o trytis, as far as they are at
present known.
p. 59. De Bary believes that Asterophora is merely a conidiiferous state of
N y c ta lis; Tulasne however adheres to the older notion.
p. 72. The best remedy, perhaps, is creosote.
p. 252. After P . Vaillantii, insert—
77. P. hybridus, B . and B r . ; white 5 mycelium thick, forming a dense
membrane or creeping branched string s; hymenium breaking up into areie;
pores long, slender, minute.—Boletus hyhridus. Sow. t. 289, 3 8 7 ,/. 6 .
On oak, in ships, etc. Tho Dry-rot o f our oak-built vessels. This species
seems hitherto to have been almost neglected by authors, the latter figure only
being quoted, which exhibits only a part of the characters.
p. 268. After Thelephora hyssoides, insert—
13*. T. sebacea,-fr .; effused, between flesliy and waxy, incrnsting, at
length hard, various, tuborculated, or resembling stalactites, dirty-white 5 circumference
fringed. (Plate 17, fig. 6 .)
On grass, etc. Common.
p. 30 9. After Crihraria intermedia, insert—
2. C. intricata, Schrad. On decayed fir-stumps. Weybridge, F. Currey.
July, 1860.
p. 3 6 8 .1 believe Pe ziza Godroniana, Mont., is not distinct from P. tricolor.
Sow.
p. 372, After llelotium ochraceum, insert—
21*. H . imberbe, Fr. On decorticated willow, A . Jerdon. Mossburnford,
1860.
CORRIGENDA.
p. 13. For Jlymenangium re:
p. 81. For Polyporus igniarius read P . j
p. 87. For 13 read 10.
p. 9 1 . For Piate 1 read Piate 3.
p. 231. For Fìaphomyces read Scleroderma.