262 THE NORTH AMERICAN SLIME-MOULDS 



Fries, Sysi. Myc, III., p, 187, confirms Persoon and takes pains to 

 say that the color separates it from T. chrysosperma with which it 

 is sometimes compared. 



Rare. Maine, Massachusetts, New York, Ohio, Toronto. 



4. Hemitrichia vesparium (B^tsch) Macbr. 



Plate III., Figs. 2 and 2 a. 



1786. Lycoperdon vesparium Batsch, Elench. Fung., pp. 255, 256, Fig. 172. 

 1794. Trichia rubiformis Pers., Rom. N. Bot. Mag., I., p. 88. 



1875. Hem'tarcyria rubiformis (Pers.) Rost., Mon., p. 262. 



Sporangia clustered or crowded, rarely single, clavate or subcylin- 

 dric stipitate or sessile, dark wine-red or red-black in color, the perid- 

 ium in perfect specimens glossy or shining metallic, opaque; stipes 

 solid, usually blent together, concolorous ; capillitium of intertwisted 

 slender threads, sparingly branched, marked by three or four spiral 

 ridges, abundantly spinulose, the free tips also acuminate, terminating 

 in a spine, the whole mass dull red. Spore-mass brownish-red, 

 spores by transmitted light reddish-orange, very distinctly warted, sub- 

 globose, 10-12 [x. 



A most common species, on rotten wood every\vhere, especially 

 in forests. Recognized generally at sight by its color and fasciculate 

 habit. The peridium shows a tendency, often, to circumscissle dehis- 

 cence, and persists long after the contents have been dissipated, in 

 this condition suggesting the name applied by Batsch, vesparium, wasp- 

 nest. The capillitium is remarkably spinescent, the branching of the 

 threads, rare. Rostafinski describes the spores as smooth ; they seem 

 to be uniformily distinctly warted. The Plasmodium is deep red, and 

 a plasmodiocarpous fructification occasionally appears. 



Throughout the whole range. New England to Washington and 

 Oregon, south to Nicaragua; Toronto. 



5. Hemitrichia stipata (Schzv.) Macbr. 



Plate I., Figs. 8, 8 a, 8 b. 



1834. Leangium stipatum Schw., N. A. F., p. 258, No. 2304. 



1876. Hemiarcyria stipata (Schw.) Rost., Mon. A pp., pp. 41, 42. 

 1894. Arcyria stipata (Schw.) Lister, Mon. Mycetozoa, p. 189. 



