LICEA.] LICEACE.E. 151 



3. L. pusilla Schrad., Nov. Gen. PL, p. 19 (1797). Plasmodium? 

 Sporangia hemispherical orpulvinate, scattered, 0'6 to 1 mm.cliam., 

 dark brown, glossy, dehiscing in lobes ; sporangium- wall cartila- 

 ginous, olive-brown, the margin of the lobes dotted with minute 

 granules, 1 to 2 //, diam. Spores olive-brown, smooth, 16 to 20 

 /A diam. Protoderma pusilla Host., Mon., p. 90. Protodermium 

 pusillum Berl., in Sacc., SylL, vii., p. 328 ; Mass., Mon., p. 43. 



Plate LVIL, B. a. sporangia, x 20 ; b. fragment of sporangium-wall, and 

 spores, x 280 ; c. spore, x GOO (Scotland). 



This species was separated by Rostafinski from Licea, and placed in 

 the division Amaurosporece as the type of a new genus Protoder///< 

 on account of the colour of the spores. The examination of several 

 specimens in Strassb. Herb, and British Museum shows that the colour 

 of the spores is essentially olive-brown ; Schrader's original place for 

 the species is therefore retained. 



Hab. On dead wood. Glamis, Scotland (B. M. 100) ; Kiel, Germany 

 (Strassb. Herb.). 



SPECIES NOT MET WITH IX THE QUOTED COLLECTIONS. 



4. L. variabilis Schrad., Nov. Gen. PL, p. 18, pi. 6, figs. 5, 6. 

 Sporangia scattered, depressed, reddish -brown, hemispherical, 

 ovate, oblong or ilexuose, of varying shape and size ; sporangium- 

 wall thin, dehiscing above, composed of a double membrane, the 

 outtr rough, the inner smooth, shining; spores dull yellow. 



Hab. On pine- wood, rarely on beech. 



The description and figures suggest that this species was a form of 

 Perichcena populina Fr., with scanty or no capillitium. 



5. L. brurmea Preuss, Linnea, xxvi., p. 709 (1853). Sporangia 

 gregarious, globose, subdepressed, ochraceous-brown ; the wall 

 parchment-like, breaking irregularly, evanescent above ; spores 

 minute, ochraceous, conglobate ; capillitium none. 



Hab. On pine-wood. Hoyerswerda, Silesia. 



This brief description probably refers to Cribraria argillacea Pers. 



6. L. incarnata Preuss, I.e. (1853). Sporangia minute, flesh- 

 coloured, smooth, round, somewhat depressed; spores flesh-coloured, 

 globose. 



Hab. On dried tincture of rhubarb. Hoyerswerda, Silesia. 

 This description is too imperfect to be of value. 



7. L. antarctica Speg.,mBoletin Acad.Nac. Cienc.Cord. Arg., xi., 

 p. 5. Sporangia in groups of from 5 to 20, rarely solitary, sessile, 

 obovate, 0'5 to 0'7 mm. diam., smoke-brown, glabrous, smooth ; 

 wall simple, brown, rugulose ; capillitium very scanty of slender, 

 scarcely branching, papillose tubes, I ^ thick, dull yellow-brown ; 

 spores globose, closely and minutely warted, rosy-fulvous. 



Hab. On dead trunks of Fayus antarctica. 



The description suggests a form of Perichcena populina Fr. 



