98 THE MYXOMYCETES 



6. Craterium concinnum Rex 



Proc. Acad. Nat. Sc. Phila. 1893 : 370. 



Sporangia scattered, usually minute, broadly funnel-shaped, stipi- 

 tate, peridium simple, variously colored by innate lime granules, open- 

 ing by a regular cap or operculum, brownish white, darkest in the cen- 

 ter, always more or less convex; stipe equalling the cup in height, dark 

 brown, longitudinally ridged; capillitium a close-meshed network, 

 with small rounded or slightly angular masses of ochre-brown lime 

 granules, larger toward the center; spores pale brown, minutely 

 warted, 9-10 n. 



This species differs from C. minutum, with which it seems most 

 nearly allied, in form, color, capillitium and color of spores. In habi- 

 tat, however, it seems no less distinct, being found mostly on the spines 

 of decaying chestnut-burs lying on the ground, in company with that 

 other peculiar species Lachnobolus globosus. 



Eastern United States; Japan. 



7. Craterium rubronodum G. Lister 



Trans. Brit. Myc. Soc. 5 : 74. 1915. 



1913. Badhamia rubiginosa (Chev.) Rost. var. concinna G. Lister in Minakata, 

 Bot. Mag. Tokyo 27 : 408. 



Sporangia gregarious, stalked, goblet- or saucer-shaped, 0.2-0.6 mm. 

 in diameter, smooth, pearl gray with red-brown base; lid convex or 

 nearly flat, with an upturned rim, white or pinkish gray, smooth; 

 sporangium wall somewhat cartilaginous, pinkish gray with uniform 

 deposits of lime granules, studded on the inner side with many small 

 pouches containing lime; stalk dark red-brown, slender, 0.1-0.2 mm. 

 high, arising from a discoid hypothallus; capillitium of ovoid or irregu- 

 lar, rounded pale pink lime-knots, dark red-brown by transmitted 

 light, connected by hyaline threads, usually forming a large central 

 solid or hollow pseudocolumella; spores purplish gray, echinulate or 

 imperfectly reticulate, 10-12 /x. Plasmodium primrose yellow, then 

 orange. 



The above description abridged slightly from Lister, ed. 3. 



Japan, India. 



6. Trichamphora Jungh. 



Fl. Crypt. Jav. 12. 1838. 



Sporangia discoidal, concave above, saucer-shaped, stipitate; pe- 

 ridium membranous, more or less encrusted with lime; capillitium 



