150 ENDOSrOUEvE. [LICEA. 



Genus 25. LICEA Schrader, Nov. Gen. PI., p. 16 (1797). 



Sporangia sessile ; sporangium-wall cartilaginous dark brown ; 

 spores olive brown. 



KEY TO THE SPECIES OF LICEA. 



A. Spores spinulose : 



Sporangia forming elongate plasmodiocarps, spores 11 to 14 /x. 



1. L. flexuosa 



Sporangia subglobose, spores 9 to 11 /A. 2. L. minima 



B. Spores smooth, 16 to 20 //,. 3. L. pusilla 



1. L. flexuosa Pers., Syn. Fung., p. 197 (1801). Plasmodium 

 dull yellow. Sporangia pulvinate depressed, or forming elongated 

 plasmodiocarps, scattered, 2 to 4 mm. long, opaque, dark brown, 

 dehiscing irregularly; sporangium-wall of two closely combined 

 layers, the outer opaque from granular deposits of refuse matter, 

 the inner cartilaginous, translucent, olive-brown. Spores pale 

 olive-brown, spinulose, 11 to 14 JJL diarn. Rost., Mon., p. 218. 

 Tubulina flexuosa Poiret, Ency. Meth., vol. viii., p. 131 (1808) ; 

 Mass., Mon., p. 37. 



Plate LVIL, A. a, plasmodiocarp, x 20; I. fragment of sporangium- 

 wall and spores, x 280 ; c. spore, x 600 (Germany). 



The spores in this species are free, and thicker and rougher on one 

 side. There is a specimen from Capt. Carmichael, Appiu, Argyle 

 (K. 1670), named by Berkeley Licea flexuosa, and by Rostafinski 

 Enteridium olivaceum (Mon., App., p. 30), which is a simple plasmodio- 

 carp form without capillitium, resembling L. flexuosa, but the spores 

 are in clusters of 6 to 8 ; it holds an intermediate position between the 

 two species, which appear to be closely allied ; specimens of typical 

 a3tbalioid Enterkliuui. oliraceum are occasionally found having free 

 spores. 



Hab. On dead wood. Aboyne, Scotland (K. 16 U) ; Germany 

 (Strassb. Herb. ; L:B.M.120) ; Norway (L:B.M. 120). 



2. L. minima Fr.,- Syst. Myc., iii., p. 199 (1829). Plasmodium 

 yellow (teste Rex). Sporangia hemispherical on a broad base, 

 depressed, scattered, 0'2 to 0*5 mm. diam., brown or nearly black, 

 dehiscing in lobes; sporangium-wall cartilaginous, opaque, dark 

 brown, the margin of the lobes dotted with minute granules 

 1 to 2 fjL diam. Spores olivaceous-brown, thicker on one side, 

 spinulose, 9 to 11 /x, diam. Tubulina minima Mass., Mon., p. 36. 



Plate LVIL, A. d. sporangia, x 20 ; e. spores, x 280 (Finland) ;/, spores, 

 x 280 (Sweden); g. sporangia, x 20 (United States); h. fragment of 

 sporangium-wall and spores of same, x 280 ; i. spore, x 600. 



Hab. On dead pine-wood. Finland (B. M. 654) ; Sweden (K. 1 646) 5 

 Norway (L:B.M.121) ; New York (L:B.M.121). 



