206 Mycetozoa of North America 



with a thick, mottled layer of oHve-brown refuse matter, dehiscing 

 irregularly. Spores pale olive-brown, spinulose, with a thinner 

 area of dehiscence, 11-14 n diam., yellowish brown or dull olive 

 in mass. 



Type locality: Germany. 



Habitat: On dead coniferous wood. 



Distribution: Colorado, *Iowa, New York, *Nova Scotia, 

 *Ohio, Ontario, Pennsylvania, *South Dakota, *Washington. 



Illustration: Lister, Mycetozoa ed. 3. pi. 148, figs. a-c. 



With little refuse on the wall this species is practically identical 

 in appearance with Dianema corticatum or Enteridium liceoides 

 (see Enteridium olivaceum), and is often associated with the 

 former. L. variabilis Schrad. may be the present species, but 

 may have been one of the others mentioned, as Schrader's de- 

 scription is not conclusive. Persoon's form is undoubtedly the 

 species, so his name is used. The form is not at all rare when 

 likely logs are watched until the fruiting period. I have found it 

 repeatedly. 



5. Licea biforis Morg. Jour. Cin. Soc. Nat. Hist. 15: 131. 1893. 



Plasmodium watery white, then grayish (Lister). Sporangia 

 scattered, minute, ellipsoid or fusiform, attached by the long base, 

 0.2 to 0.5 mm. long, 0.05 to 0.1 mm. broad, glossy yellowish 

 brown, dehiscing along a thinner central ridge or depression; 

 sporangial wall membranous, minutely papillose, almost colorless, 

 with scanty, superficial deposits of discharged refuse matter. 

 Spores globose or ellipsoid, the wall thinner on one side, 9-12 n 

 diam., smooth and almost colorless, ochraceous in mass. 



Type locality: Ohio. 



Habitat: On dead bark. 



Distribution: Iowa, Kansas, New York, *Ohio, Ontario, 

 Pennsylvania. 



Illustration: Lister, Mycetozoa ed. 3. pi. 149, figs. g-k. 



The favorite habitat is on the inner layers of dead bark, where 

 it often forms thousands of sporangia scattered over the different 

 layers. It also develops on the outside of bark. The distribution 

 stated is entirely out of proportion to the probabilities, as it must 

 occur almost everywhere, but overlooked because of the small 

 size and habitat. With good eyes the sporangia can be seen as 

 yellow specks. The central longitudinal depressions along the 

 elongate sporangia give them the appearance of date-stones. 



