DR. LINDSAY ON NEW-ZEALAND LICHENS. 531 
rum: partly sterile, partly in fruit and spermogoniferous. An authentie specimen of 
Laurer’s plant, from Professor Churchill Babington, in herbarium Kew, bears the anno- 
tation, apparently by Babington, ** No doubt this is your S. compressum." It appears 
io me impossible to separate Australe from compressum, perhaps even as a variety 
specially named. True, antarctic specimens differ much from our ordinary British plant, 
in being much handsomer and larger in all dimensions; but if the passage-forms are 
watehed for and examined, it will be found that the gradations are numerous and imper- 
ceptible; and the same doubt will occur (as in the genera Ramalina, Usnea, Stereocaulon, 
and others) whether all the British and foreign species yet known may not be properly 
reducible to one or more widely diffused and variable types, such as the common S. coral- 
loides. Intermediate between the British S. compressum and the antarctic S. Australe 
is a series of South American forms in herbarium Kew. The divisions of the thallus 
are generally broad, of a waxy aspect, and pale grey above, buff below, frequently chan- 
nelled or concave below and convex above; sometimes they are very narrow and sub- 
linear. In some cases the fructiferous ramules are deformed and scarcely recognizable ; 
in Tasmanian specimens, the apothecia are sometimes seated in the axils of divergent 
spermogoniferous ramules. Some specimens are largely spermogoniferous, the spermo- 
gones occupying their usual position in S. compressum—the ends, angles, and pro- 
minences of the ramules. "Tasmanian specimens do not differ from New-Zealand ones ; 
but both are inferior in size and beauty to, though they are essentially identical with, 
antarctic forms. 
Genus XV. BÆOMYCES. (Plate LXII.) 
Sp. 1. B. ruxcorpzs, Ach. (Fig. 8.) 
On the ground, Tarndale, Nelson (Dr. Sinclair): in my herbarium, in fruit. À beautiful 
little species. Spores (b) fusiform, simple, colourless, 00045” long, ‘00010 — 
broad. Thecæ (a) very distinct, 8-spored, ribbon-shaped, 0030" long, ; 00028 broad. 
Paraphyses subdiscrete, without clavate heads. Hymenium pale blue with iodine. 
In herbarium Kew there are specimens from Dr. Swartz (probably from -E : 
1805, having similar characters. Spores :0003" long, 0001” broad. Thece am i t 
iodine, +0023” long, :0003" broad. The plant is larger and stouter than B. roseus ; bu 
otherwise its characters are the same. The stem is simple, generally bearing only -— 
terminal apothecium ; sometimes it branches above, each branch then bearing at : T 
an apothecium. Both New-Zealand and German specimens appear to me - À conati 
! : i from the north island of 
parable from B. roseus, Pers., which occurs in herbarium Kew 
New Zealand : on dry hills (Dr. Joliffe). In the same herbarium, 
ftom the North Island (Colenso). 
B.rufus, DC. occurs, 
Genus XVI. Crapoxza. (Plate LXII.) 
Sp. 1. C. AGGREGATA, Eschw. [Linds. Spermog. 170.) 
} Known to the older lichenologists as Dufourea col 
caracters of a Cladonia near rangiferina and furcata, 
s apothecia and spermogones. 
lodes, Tayl.; but it has all the 
to which it is closely allied by 
