256 FLORA OF TASMANIA. [Fungi, by M. J. Berkeley. 
Gen. XVI. MERULIUS, Hall. 
Hymenium ceraceo-molle, plicis obtusis reticulatum. 
The reticulate folds distinguish this genus from its allies. The species belong prineipally to temperate regions. 
M. corium is very widely distributed, and assumes various forms. (Name originally given to the Morel, from serus, 
pure (safe to eat), and transferred to Fungi with a reticulate hymenium by Haller.) 
1, Merulius corium (Fr. El. p. 58). 
Haz. On dead wood, Archer. 
2. Merulius pallens (Berk. in Ann. Nat. Hist. vi. 357). 
Has. On dead wood, Archer. b 
Some states are scarcely distinguishable from PAlebia. 
Gen. XVII. POROTHELIUM, Fr. 
Hymenium papillatum, papille demum aperte cum hymenophoro contigue. 
The resupinate species are immediately connected with Polyporus by the corky P. rugosum, from South 
America. From Fistulina the genus is distinguished by habit rather than by any definite characters. (Name 
from opos, a pore, and Ondn, a pap.) 
1. Porothelium subtile (Fr. Ep. p. 504). 
Has. On dead wood, Archer. 
Gen. XVII. HYDNUM, Z. 
Hymenium aculeatum ; aculei liberi, deorsum spectantes, nisi in resupinatis. 
A large genus, containing the greater part of the Fungi which bear true prickles in contradistinction to broken 
pore-walls on the hymenium. H. repandum, a Tasmanian species, is one of the best esculent Fungi. (Name from 
vÔvov, a fungus.) 
l. Hydnum levigatum (Swartz; Fr. Syst. i. p. 399). 
Has. On the ground, Archer. 
?. Hydnum repandum (L. Suec. 1258), 
Has. On the ground, J. D. H. 
9. Hydnum cervinum (Berk.) ; resupinatum, effusum, immarginatum, vinoso-pallidum, primitus 
subtiliter tomentosum, aculeis setiformibus, 
Has. On dead wood, Archer, 
Very thin, effused, resupinate, at first minutely tomentose, arachnoid, then partially shining, as if washed with 
a delicate coat of gum, of a pallid-fawn tint. Prickles slender, short, setiform. 
| 4. Hydnum filicicola (Berk.) ; resupinatum, effusum, immarginatum, album, tenue, setulis basi 
poroso-connexis applanatis acutis. 
Has. On dead Fern-stems, Archer. 
Resupinate, thin, effused, immarginate, white, forming a thin membrane neither distinetly farinose nor tomen- 
tose. Teeth connected at the base so as to form imperfect pores, flat, acuminate, often triangular.—An obscure spe- 
cies, which bears a distant resemblance to Polyporus vaporarius, and approaches in its characters the genus Zrpez. 
