158 DR LAUDER LINDSAY ON THE SPERMOGONES AND PYCNIDES 
SPECIES 5. C. cenotea, Scher., 
Which grows in Europe and North America; it seems to me to belong to C. pyxidata. 
Specimen 1.—ScH@RER exs. 71; on the ground and the putrid trunks of 
trees, in hilly and alpine regions, Switzerland. There are no apothecia; the 
scyphi are not much dilated, and the spermogones are marginal, and precisely of 
the characters of those of C. pyxidata. 
Specimen 2.—(sub C. trachiata, Fr.) Mahourat; Spruce’s “ Lich. Pyreneei ;” 
in Herb. Hooker, Kew. The podetia are sub-digitately divided above, and are 
covered throughout with an abundant gray pruinosity. The spermogones here, too, 
are those of C. pyxidata. 
SPECIES 6. C. gracilis, Fr., 
Like C. pyxidata and C. jimbriata, a cosmopolite. It has two principal varieties, 
verticillata, Fr., which occurs in Europe, America, and Australia, and cervicornis, _ 
Ach., which is confined in its range to Europe. 
Specimen 1.—Blaeberry Hill, Perth, April 1856, W. L.L. The spermogones 
occur on the margin of the small scyphi, which terminate the long slender podetia ; 
they exactly resemble those of C. pyxidata. 
Specimen 2.—Lion’s Face, 1844, and Sidlaw Hills, 1846, Forfarshire; Gar- 
DINER of Dundee; in Herb. Hooker, Kew. Plant bears both apothecia and sper- 
mogones; the latter as in No. 1. 
Specimen 3.—Tasmania, Antarctic Expedition, 1839-43, Dr Hooker (sub Cen- 
omyce ecmocyna, Ach., var. a.; the var. gracilis of NyLANDER). This is a long, 
delicate, graceful form, the podetia being simple and cylindrical, and abundantly 
clothed with scales or folioles. The spermogones are few, terminal, isolated, 
short, deep-brown, barrel-shaped organs, closely resembling those of C. furcata 
or C. rangiferina. The ostiole is large and distinct. 
Specimen 4.—Falkland Islands, Antarctic Expedition, 1889-48, Dr Hooxer. 
The thallus is much broken up; the spermogones are few and old, scattered on 
the margins of the scyphi. There are no free spermatia. ‘The sterigmata are 
elongated and hypertrophied, filling the cavity of the spermogone; they are very 
delicate, linear, and ramose at the base. 
Specimen 5.—Var. elongata, Fr. and Nyl., Disco Island; Lyatt, 1854. Avery 
long and graceful form, with abundant spermogones. 
Specimen 6.—ScHARER exs. 67 (sub @. hybrida, C. elongata); on the ground 
in alpine districts. The spermogones occur on the ends of elongated, sterile 
podetia; they are largish and barrel-shaped, but are old. The sterigmata are 
elongated, hypertrophied, and very ramose, filling the cavity of the spermogone, as 
in No. 4; a phenomenon which is common in the old spermogones of all the Cla- 
donias. 

