OF FILAMENTOUS, FRUTICULOSE, AND FOLIACEOUS LICHENS. 151 
abundantly spermogoniferous; Falkland Islands, Dr Hooker, thallus much de- 
formed; Van Dieman’s Land, Fraser; New Holland, Fraser: Tasmania, As- 
bestos Hills, Gunn; Van Dieman’s Land, Gunn,—all these specimens are in the 
Hookerian Herbarium, Kew. However variable the thallus, the disposition of 
the spermogones is always the same. In Van Dieman’s Land specimens, the apo- 
thecia are sometimes seated in the axils of divergent spermogoniferous ramules. 
Specimen 7.—Var. australe, Laur. ; New Holland, Sizser; an authentic speci- 
men of LauRER’s plant, from the Rev. CHurcHILL Basineron, in Herb. Hooker, 
Kew; also, New Zealand, Cotenso, in Herb. Hooker. This isa large handsome 
plant, but certainly only an exaggerated form of S. compressum The spermo- 
gones occupy the same position that they do in S. compressum, being scattered 
about the ends of the ramules, on the angles and prominences, which abound there- 
on. But the ends of these ramules vary considerably in character. Sometimes 
they are broad and fastigiate, at other times simple and narrow. In the latter 
case, the spermogones are generally terminal and isolated, as in S. coralloides. 
Whether isolated or grouped, they are largish, black, round, semi-immersed bodies, 
generally very distinct, especially if, as is frequently the case, the thallus is pale 
gray, or cream-coloured, and waxy. The spermatia are oblong or rod-shaped and 
straight, or they may be very slightly curved ; their length averages smth, and 
their breadth south. The sterigmata are simple, linear, very delicate, ramose be- 
low, as in Ramalina ; their length averages about gath to guth, and their breadth 
sooth, or, in other words, they are of equal width with the spermatia. 
GENUS II. Acroscypuus, Lév., Tul.,* 
In external characters, the spermogones are closely allied to those of Spheero- 
phoron, especially of S. coralloides, being seated on the tips of sterile ultimate ra- 
muscles. Their character is sufficiently represented by that of the spermogones 
of the single species of the genus, A. sphwrophoroides. 
Specigs 1, A. spherophoroides, Lév., 
Which appears peculiar to the mountains of Mexico and India. 
Specimen 1.—Wallanchoon, Sikkim, Himalayas; alpine region, at an elevation 
of 13,000 feet; Dr Hooxer, in Herb. Hooker, Kew; both apothecia and spermo- 
gones abundant. The spermogones occur at the ends of sterile ramuscles, which 
are frequently fastigiate, and very much warted; the irregular warts resembling 
those of some Stercocaula. The spermogones are punctiform, brown, most irregular 
in form and size; these are ostioles leading to immersed, compound spermo- 
gones. ‘The spermatia are oblong or sub-ellipsoid, about z;th long, with a breadth 
of sath, and very abundant, on articulated sterigmata. 
* Mém. Lich. t, 15, f. 10-12. 
