OF FILAMENTOUS, FRUTICULOSE, AND FOLIACEOUS LICHENS. 273 
roTH’s Thrombium bacillare, and Scopou’s Pseudo-perithecia of Collema multi- 
jfidum referred either to the Spheria in question, or to the ordinary spermogones 
of the species. 
Specimen 1.—Clapham, Yorkshire; coll. Dr Detenton, 1855 ; a beautiful large 
specimen, with abundant apothecia. The spermogones are abundant on the edges 
of the plicate sub-erect lobes as distinct brownish-red warts, easily distinguished 
when moistened, on account of the contrast of their colour with that of the dark 
blackish-green of the thallus. 
Specimen 2.—Malham, Yorkshire; coll. Dr Carrineron; with apothecia. 
The spermogones are marginal, small, brownish-yellow tubercles, very distinct 
when moistened. The spermatia are rod-shaped and very small; the arthro- 
sterigmata are short, broadish, and very irregular. 
Specimen 3.—Deer Park, Belfast; Prof. Dickiz, 1851. The spermogones are 
very abundant roundish warts, of a pale brownish-yellow colour, distinct when 
moistened. They are chiefly marginal, but are also scattered over the flat surface 
of the lobes, towards their periphery. 
Specimen 4.—Ben Bulben, County Sligo ; Prof. Dicxiz, 1851. The spermogones 
are marginal, pale, brownish-yellow knobs or tubercles, but not very distinct even 
when moistened, as they partake somewhat of the deep dull-green colour of the 
thallus. The spermatia are rod-shaped, about 7anth long, and youth broad, 
seated on longish arthrosterigmata. 
Specomen 5.—Appin, CarmicHaEL; in Herb. Hooker, Kew. The spermogones 
are marginal, pale, brownish-yellow or buff-coloured round disks, quite resembling 
small seeds, their colour contrasting well with the dark-green of the thallus. 
They are still more abundant and beautiful in specimens from Ireland, Sir Tuomas 
GAGE (sub nom. C. crispum), and from Choos, Pyrenees (sub nom. C. marginale, 
var. Ach.), without apothecia. 
Specimen 6.—ScH/RER exs. 420 (sub Parmelia multijida 0. marginalis); on 
sunny calcareous rocks, Switzerland. Spermogones occur on the left-hand speci- 
men in my copy (original ed., 1842). They are plentiful on the edges of the lobes, 
to which they give a buttoned or toothed character. They are small brown 
tubercles, roundish or flattened, many of them having a distinct, deepish-brown 
ostiole. The spermatia are rod-shaped, about juth long; the arthrosterigmata 
are pale-yellowish, thick, and irregular in outline. 
_ Specimen 7.—Var. cristatum, Scherer exs. 417 (sub Parmelia multifida B. 
cristata) ; on calcareous rocks, Switzerland. The spermogones are marginal, 
grouped, small, distinct, roundish brown tubercles; there is no very perceptible 
ostiole.. The spermatia are rod-shaped, about jth long; the arthrosterigmata 
are very irregular in outline, and about zth to sth long. 
Specimen 8.—Var. jacobefolium (Syn. Lichen jacobefolius, Bernhardi); with 
laciniee narrow and much cut or dissected. A specimen from Dr Acuarius, 1809, 
‘VOL. XXII. PART 1. AA 
