y 
fy. ED 
a” 
148 : ORYPTOGAMIA ANTARCTICA. : [Puegia, the 
Haz. Hermite Island, Cape Horn; on leaves of Viola tridentata. 
Amphigena, punctiformis. Mycelium valde obscurum, e filamentis paucis brevibus parce ramosis. Perithecia 
depressa, atro-fusca, e cellulis radiantibus elongatis subregularibus formata; margine tenui lacerato membranaceo 
pellucido. i 
Neither have I been able to detect fructification in this plant, but the genus is T believe certain. 
Prats CLXIV. Fig. IV.—1, Viola attacked with Fungus of the natural size; 2, leaf of ditto and Fungus ; I 
3, perithecium ; 4, portion of edge of ditto :—highly magnified. 
1 
3. ASTERINA Darwinii, Berk.; epiphylla, maculis parvis orbicularibus e fibrillis radiantibus articulatis ; 
inarticulatisque, peritheciis irregularibus demum depressis centralibus margine laciniato. (Tas. CLXIV. ( 
Fig. II.) 1 
Has. Cape Tres Montes; on Azara lanceolata; C. Darwin, Esq. 0 
Macule epiphylle, orbiculares, 4-1 lin. latze, e fibrillis radiantibus reticulatisque, partim e margine perithecii, fi 
partim e superficie inferiore enatæ, breviter articulate, aut omnino simplices. Perithecia primum irregularia, sub- 1 
elevata, demum depressa, margine laciniato laciniis denticulatis. Zsei ut in reliquis speciebus globosi; sporidia ۱ h 
oblonga, biloculata. T ۲ 
Apparently different from 4. 4zare, Lév., in its perithecia, which are not depressed in the centre, as in that p 
species. Unfortunately I have no opportunity of comparing them. The perithecium, both here and in Asterina 3 
microscopica, splits from the centre in a radiating manner when slightly pressed. 
Prate CLXIV. Fig. IL—1, Asterina Darwinii, Berk., on leaves of Azara lanceolata, of the natural size; it 
2, perithecia and mycelium ; a, cuticle of matrix; 6, incipient perithecium ; c, curious processes given off from threads f 
of mycelium; 3, fibres of mycelium; 4, portion of border of perithecium ; 5, processes on threads of mycelium ; ha 
k 
6, asci; 7, sporidia :—all very highly magnified. 
19. EUROTIUM, Zi. i | 
1. Evnorruw Aerbariorum, Lk., Obs. vol. i. p. 29. f. 44. j 
Has. On biscuit on board the * Erebus’, Jan. 3rd, 1841. 
The sporangia in the specimens before me, which are very scanty, are almost destitute of flocci, but accompanied 
by an abundant tawny mycelium, thus confirming the opinion of Fries and Corda, that Lurotium epiaylon is not 
really a distinct species. I cannot, however, think with Corda that it has the slightest affinity with Physarum. 
The morphosis has not at present been traced, and till this is done it appears better to let it remain where Fries has 
placed it, in the neighbourhood of Mucor. 
The peridium is lined with a stratum of gelatinous cells, which vanish in a great measure as the plant approaches. 
maturity. The floeci in Kze. and Schm., n. 83, are rough and dark, but I find great variation both of surface and 
colour. 
LV. ALGA, Z. 
1. DURVILLAA, Bory. 
1. D'Urvinza utilis, Bory, in Duperrey Voy. Bot. p. 65. t.1 et 2.f.2. Fl. Antarct. Pt.1. p. 167. 
Laminaria cxpestipes, Montagne in Voy. D Orbigny, Bot. Crypt. p. 11. t. 2. 
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