and 
vibus 
pressa, 
eptato, 
h these 
simple 
3, asc 
ulate, 
Campbell's Islands. | CRYPTOGAMIA ANTARCTICA. 61 
Hypogena, nigra, maculam nigram subeffusam superne stromatis indicem exhibens, una tantum macula in sin- 
gulo folio ut videtur evoluta. Stroma 2—1 lin. latum, hemisphericum, carbonaceum, extus scabriusculum, nec evidenter 
papillato-granulosum, demum fatiscens : intus carbonaceum, superne reticulatim cellulosum, sub lente atro-ceruleum 
vel demum viridi-fuscum constans, basi in floccos abeunte. Cellule fructifere oblongo-elliptice, periphericee, obtusi- 
uscule, vix apiculate. 4sci breviusculi. Sporidia octona, oblonga, uniseptata, medio constricta. 
This species has much more the habit of a Spheria than most Dothidee, being of a carbonaceous texture, 
like the Spheria fragiformis ; but though, on making a delicate vertical section, a thin stratum of tissue, consisting 
of only a single layer of cells, occasionally appears, no trace of this is seen on the sides of the cavities distinct. from 
the neighbouring tissue. "The specimens procured are not numerous, in no instance does more than one individual 
appear upon a single leaf, the latter being probably of too small a size to support more than a solitary stroma of such 
high organization. Like some other species indicated by Montagne in his * Fungi of Cuba,’ this is probably originally 
produced between the layers of the cuticle, for some of the latter is found beneath the stroma. The cells of the stroma 
pass at the base into a mass of reticulated filaments, without any membrane being attached to the meshes. 
Pirate LXVII. Fig. TI.—1, a sprig of Veronica odora, with the fungus of the natural size; 2, a section of the 
fungus; 3, a portion of the same, more highly magnified; 4, an ascus; 5, sporidia; 6, a section shewing the loose 
cellular tissue of the centre, the pentagonal tissue about the base of the cells, and the elongated tissue between 
them :—all magnified. 
2. DOTHIDEA spilomea, Berk.; gregaria, hypophylla, maculis epiphyllis nullis v. obsoletissimis, subinnata, 
depressa, tenuis, orbicularis, seepe confluens, minutissime granulosa, nitida, cellulis globosis, ascis clavatis, 
sporidiis oblongis uniseptatis medio constrictis. (Tas. LXVII. Fig. I.) 
Has. Lord Auckland’s group and Campbell’s Island; on the leaves of Veronica elliptica, Forst. 
Hypogena, nigra, nitida; maculis 1—1 lin. latis, gregariis, orbicularibus, quandoque confluentibus, depressis, 
subinnatis, tenuibus, minutissime granulatis. Stroma tenue, subtus cum parenchymate confusum. Cellule fructifere 
globose, ostiolo punetiformi. sci clavati. Sporidia oblonga, quandoque curvata, uniseptata, medio constricta. 
In some leaves the spots are very numerous, in others they are but few and of a larger size. "The species is 
most allied to the D. amphimelana, Mont., and D. Zollingeri, B. and M., although not very near either; it exhibits, 
also, some affinity with D. granulosa, Hook. et Arn. Externally it strongly resembles the punctiform variety of 
Rhytisma salicinum. The spots are of a shining black, and are very minutely granulated under a lens. 
Prare LXVII. Fig. I.—1, a sprig of Veronica elliptica, covered with the parasite, of the natural size; 2, a 
section, slightly magnified; 3, ditto, more highly magnified; 4, asci; 5, sporidia : magnified. 
7. ASTEROMA, Dec. 
1. AsrEROMA dilatatum, Berk.; superficiale, maculis riccieeformibus, lobis dilatatis e filamentis serpen- 
tibus approximatis in membranam congestis. (Tas. LX VIII. Fig. VIL.) 
nigre, non tamen nitide, rugosiuscule, granulatee, intus nigree, substantia sub lente fusca. Cellule fructifere ellip- 
tice, albo-farctee, ostiolo papilleeformi. sci oblongi, basin versus latiores. Sporidia oblonga, uniseptata. 
A very fine species, allied to D. amphimelana, Mont., D. Rute and D. puccinioides. The first of these is more 
regular and innate, besides having a spot on the under side opposite to that on the upper; whereas, in the present 
species, in consequence of the superficial mode of growth, there is no such spot. D. amphimelana has no evident 
border to the stroma. D. Rute has uniseptate sporidia, but they are short and brown; in which respect also D. 
bullata differs from D. puccinioides, and in several other characters from both, as its much larger size. 
Q 
