DECADES OF FUNGI. 73 
annulata, annulis interdum quadrate cellulosis, pellucida, 
ascis sphæricis inclusa. 
l. Myriangium Duriei, Mont. and Berk. majus, hæmi- 
sphericum, subnitidum. 
Has. In Pyr. Or. (Montagne), ad corticem Mori albi. Len- 
fisci in Algerià (Durieu); in Australia in Prov. dictá Swan 
River (Drummond). 
2. Myriangium Montagnei, Berk. minus, irregulare, atro- 
purpureum, subtiliter tomentosum. Drumm. n. 262. 
Has. Ad corticem in Australia in Prov. dicta Swan River. 
Drummond. 
The second species resembles extremely Dothidea exami- 
nans, Berk. and Mont.; but not only are the sporidia quite 
different, the cells containing a single ascus only, but the whole 
structure of the plant is that of Collemacee. 
The genus bears a certain external resemblance to Tym- 
panis, without, however, the least affinity. It is more nearly 
allied to Arthonia, but differs from it in the structure of 
` the thallus and nucleus. It is again allied to Paulia, Fée 
(Linn. vol. x. tab. 4), but the fructification is different ; and 
also to Omphalidium, Mey. and Flotw., in which the asci and 
Sporidia have a very dissimilar form, and the structure of the 
thallus is quite unlike. Complete figures will shortly be 
published by Dr. Montagne. 
Description of a New Genus of Papaveraces, detected by 
the late Dn. Counter, in California; by W. H. Harvey, 
M.D., M.R.S.A,, &c. 
With a Plate.—(TA». III.) 
In the collection brought by the late lamented Dr. Coulter 
from California, I was immediately struck by the singularity 
of a fine Papaveraceous plant, which I soon ascertained to be 
distinct from any hitherto recorded from that country; and 
à closer examination and conference with Sir W.J. Hooker, 
Proved it to belong to a new and curious genus, closely allied 
VOL, Iv, + 
