TWO NEW SPECIES OF MYCETOZOA 



61 



I also jotted clown those cellular cryptogams occurring on the 

 same wall which I could easily recognize : — 



Bmchythecium rutabuluvi MoUia hmchyclontia 



B. pojjuleum ThuicUum tamariscinum 



EiLvhynchium myosuroides Metzgeria furcata 



Milium liornum Aneura sp. 



Campjloims fiexuosus Frullania Tamarisci 



Polytrichum formosum Parmelia perlata 



P. inliferum Lecanora inirella 



Ptychomitrium polyphyllum Sticta fuliginosa 



Hypnum imrum Cladonia sp. 



H. cupressiforme Trentepolilia aurea 



To account for the occurrence of such a mixture of xerophytes 

 and hygrophytes, one has to take into consideration the constantly 

 moist atmosphere with regard to the latter, and the constant 

 drainage as regards the former. The mesophytes were also quite 

 at home under the combined conditions. Rain falls on two hundred 

 and forty days in the year, but the actual amount is not a very 

 high one — from forty to fifty inches yearly. 



TWO NEW SPECIES OF MYCETOZOA. 

 By G. Lister, F.L.S. 



The two following species have lately been obtained from 

 Scotland and Japan respectively. x\s the sporangia of both are 

 minute and inconspicuous, it is not surprising that they should 

 until recently have escaped observation. 



Licea castanea, n. sp. Plasmodium ? Sporangia scattered 

 or collected in small groups, sessile, subglobose, or forming short, 

 straight or curved plasmodiocarps, 0-3 to 0-7 mm. long by 0-2 to 

 0-25 mm. broad, dark chestnut-brown, smooth or wrinkled; sporan- 

 gium-walls somewhat cartilaginous, pale purplish or nearly 

 colourless, overlaid with a more or less continuous layer of 

 minute bright brown granules, and at length dehiscing along 

 definite fines to form plates or lobes whose margins are slightly 

 thickened and minutely toothed. Capillitium none. Spores in 

 mass pale olive, when magnified almost colourless, smooth, 

 8 to 10 ji. diam. ; spore-wall thinner on one side. 



Tliis species was discovered in November, 1910, by the Rev. 

 W. Cran at Lesmoir, Aberdeenshire, where it occurred on moss 

 growing on the bark of Pynis Aucuparia and also on the bark 

 itself. About twelve sporangia in all were obtained. In size 

 they resemble the sporangia of L. minima Fr., but they are more 

 elongated in shape ; they differ also from that species in the very 

 pale and smooth spores, and in the membrane of the sporangium- 

 wall being nearly colourless and having superficial deposits of 

 bright brown granules, 2 to 3 /i diam. ; these granules are similar 



