CORTICIUM. 283 



On dead and decayed pine in woods and cellars. Common. Corticim 

 Nov. 



Name aridus, dry. Fr. Hym. Eur. p. 659. S. Mycol. Scot. n. 905. 

 Theleph. Berk. Out. p. 269. C. Hbk. n. 907. 



Subgenus II. HYPOCHNUS. Breaking up and becoming 

 floccose, &c. 



* Breaking up and becoming ftoccose. 



43. 0. serum Fr. White, broadly effused, incrusting, thin, 

 fleshy when fresh, smooth, pruinose, then and when dried splitting 

 open intoflocd, papillae round, crowded together, equal. 



A very singular species. Papillae regular. 



On trunks. Epping. Glamis. Menmuir. Winter. 



Spores sphaeroid or ovoideo-ellipsoid, smooth, hyaline or chlorino-hyaline, 

 9-11 xj-8 mk. K. Name serus, late. Growing in winter. Fr. Hym. Eur. 

 p. 659. B. 6^ Br. n. 1583, 1697. S. Mycol. Scot. n. 906. Theleph. Pers. 

 Syn. p. 580. Fr. Elench. p. 211. 



44. C. sambuci Fr. White, effused, somewhat innate, incrust- 

 ing, surrounding branches, indeterminate, continuous when in 

 vigour, breaking into floccules when dry. 



Easily recognised from its habitat. 



On dried branches of elder. Very common. Aug.-Dec. 



Very difficult to separate from C. calceum by a strict definition. M.J.B. 

 Name sambucus, elder. Fr. Hym. Eur. p. 660. Berk. Out. p. 276. C. 

 Hbk. n. 943. 5. Mycol. Scot. n. goj.Grev. t. 242. Letell. t. 607. / 2. 



** Hymenium tomentose, somewhat pulverulent. 



45. C. olivaceum Fr. Membranaceous, adnate, circumference 

 fringed and whitish. Hymenium thin, dark olivaceous, tomen- 

 tose with small bristles. 



Broadly effused, orbicular or elongated. The colour is distinguishing and 

 remarkably constant. 



On pine wood. Uncommon. 



Spores sphaeroid or sphaeroid-ellipsoid, very pale yellowish or slightly fus- 

 cous, 4 mk. K. ; ovoideo-ellipsoid, nucleate, yellow, 8 mk. Q. Name from 

 the colour. Fr. Hym. Eur. p. 660. Theleph. Fr. Elench. p. 197. Berk. 

 Out. p. 269. C. Hbk. n. 908. 



46. C. ferrugineum Fr. Ferruginous, effused, adnate, every- 

 where tomentose. Hymenium papillose, pulveraceous. 



It may be compared with Hydnumferruginosum and Polyporus floccosus. 



