204 DR LAUDER LINDSAY ON THE SPERMOGONES AND PYCNIDES 
Edinburgh ; with apothecia and glomeruli. The spermogones are plentiful, but 
old, containing no free spermatia. ‘They are scattered about the margins of the 
lobes of the thallus, and closely resemble nascent apothecia, of which the brown, 
round, saucer-like ostioles somewhat resemble the disks. 
Specimen 2.—Minto Craigs, Roxburghshire ; Glen Lyon, Breadalbane, coll. by 
Rev. Hueu M‘Mittan ; both in Herb. Royal Botanical Garden, Edinburgh. Both 
specimens are spermogoniferous; neither have apothecia; and the Glen Lyon 
specimens have enormous glomeruli. In them the spermogones occur abundantly 
as lurid or brownish-red round macules, resembling the apothecia of Arthonia 
lurida. 
Specimen 3.—ScHARER exs. 559 (sub Parmelia amplissima, Scop.). Trunks of 
trees about Vire, Petver. The specimen has only two or three old spermogones, 
containing no free spermatia. 
Specimen 4.—Col de Lourvie, Pyrenees; “ without glomeruli always in this 
locality,’ remarks the Rev. CourcHILL Basineton on the label in Sprucn’s “ Lich. 
Pyrenzi,” in Herb. Hooker, Kew. Besides the ordinary form of spermogones, 
some are distributed on irregular, large, wart-like growths of and from the 
thallus, resembling those of Parmelia saxatilis, on which Lecidea Smithii and 
L. oxyspora grow. ‘These growths are subfoliaceous, of a deeper brown than the 
thallus, and manifestly distinct therefrom, or at least not a normal or usual 
part thereof. Over these wart-like growths are dotted the ostioles of immersed 
spermogones, which are brown, round, and rather larger than in the usual form 
of the spermogones. Under moisture, they swell so as to become small sub- 
gelatinous cones. The spermatia are about jth long, and sjqth broad. 
SPECIES 3. LR. coriacea, Tayl. 
Specimen 1.—New Zealand; in Herb. Hooker, Kew. The spermogones , 
resemble those of &. herbacea ; but they are smaller and more abundant. They 
are crowded about the margins of the lobes, are papilleeform, sometimes confluent 
and tuberculiform, with a brown apex. 
Species 4. AR. discolor, Ach., 
Which inhabits the Isle of Bourbon, Madagascar, and Java. 
Specimen 1.—Muckross, Ireland; on trees, 1828; in Herb. Hooker, Kew; 
named by NyLANDER himself. This appears to me simply our British &. herbacea, 
with a more delicate thallus than usual, but having apothecia and spermogones 
quite of the usual type. The spermatia are about gath long, and santh broad. 
Species 5. R. crenulata, Hook. 
Specimen 1.—On twigs, Juan Fernandez ; in Herb. Hooker, Kew. In regard 
both to its apothecia and spermogones, this species stands near &. herbacea and 

