POLYPOEEI. 291 



angular reticulations, dull brown when dry. — Berh. Outl.p. 256. 

 Grev.t.2'24.. Eng.Fl.Y. p. 1?jO. 

 On bark. Rare. Appin. 



This minute species forms a mere pellicle, in its dry state of a uniform 

 dull brown, scarcely distinguishable from the bark on which it grows, but 

 when examined with a moderate magnifying power the regular, often hex- 

 agonal reticulations, exhibit a very elegant appearance, like the cells of a 

 honey-comb, but quite superficial. — M. J. B. 



B. Coniophori — spores ferruginous. 



839. Merulius lacrymans. Fr. " Dry-rot Merulius." 



Large, flesby, spongy, moist, ferruginous yellow, arachnoid 

 and velvety beneath ; margin tumid, tomentose, white ; folds 

 broad, porous, and gyroso-dentate. — Fr. Epicr.j). 502. Fl. Dan. 

 ^ 2026. Kromhh.LAijJ.l-2. Sow. t. 113. Jacq. Misc. t. 8./. 2. 

 Berk. Outl. t. 2,/. 1. Huss.'i. t. 3. Fng. Fl. v. p. 129. Strauss. 

 Stvrm. t. 4. Price,/. 30. Fcid. exs.no. 1361. Payen.f. 484. Kl. 

 exs. no. 228. 



In cellars, hollow trees, &c. Common. [Mid. Carolina.] 



Whole plant generally resupinate, soft, tender, at first very light, cottony 

 and white ; when the veins appear they are of a fine yellow-orange, or red- 

 dish-brown, forming irregular folds, most frequently so arranged as to have 

 the appearance of pores, but never anything like tubes, distilling, when 

 perfect, drops of water. Sometimes the pileus, or substance of the plant, 

 from its situation, produces pendant processes like inverted cones. — Grev. 

 Spores ferruginous. Spores oval, rich, orange-brown, '00035 X •00023 in. 



(Fig. 68.; 



Gen. 26. POROTHELIUM, Fr. Obs. 



Hymenophore arachnoid, covered 



with distinct papillae, at first closed, 



then open like pores. {Fig. 69.^ 



Hymenophore mycelioid, covered with 

 papillse, wLich are at first distinct and 

 closed, soon opening into pores, which be- 

 come elongated and tubular. Submem- 

 branaceous, resupinate fungi. 



Fig. 69. 



840. Poxothelium Friesii. Mont. " Fries' PorotheUum." 

 Effused, confluent, flocculoso-membranaceous, white, inclined 



to tan colour, circumference simple, papillas immersed, yellowish, 



o 2 



