62 MYXOMYCETE3. 



Mitcor capitiilis pyriformis, Fl. Dan., t. 647, f. 2 (1770). 



Mucor mmiatus, Jacq. Misc., t. 299 (1778). 



Stemonitis flavescens, Schrank., p. 19 (1792). 



Lycoperdon aggregation, Liljeb. Fl. Scan., 460(1792). 



Li/coperdon pusillum, Hechv. Abh., t. iii., f. 2 (1793). 



Trichia fallax, Pers. Obs., iii., t. 4, 5 (1797); Nees, f. 113 ; 

 Corda Ic., iv., 97 ; Eng. Fl., v., 319 ; Cooke Hdbk., 1182. 



Physarum pyriforme, Schum. Saell., 1448 (1803). 



Trichia virescens, Schum. Saell., 1459 (1803). 



Trichia cerina, Ditm., t. 25 (1817); Curr. Micr. Journ., v., p. 

 127; Cooke Hdbk., No. 1184. 



Trichia fulva, Purt. Mid. FL, 1534 (1817). 



Trichia clavata, Wigand, No. 3 (1863). 



Trichia furcata, Wigand, No. 4 (1863). 



Arcyria elongata, Bong. Herb. 



76. Trichia fragilis. Son*. 



Sporangia usually pyriform, more rarely turbinate, either stand- 

 ing singly or with the stems agglutinated together lengthwise into 

 a bundle, crowned with numerous sporangia. Colour variable, 

 mostly dull red-brown, or blackish- brown, more rarely yellow or 

 coffee-brown, opaque ; mass of spores and elaters separate from 

 the pit of the stem, a separate membrane surrounding it on all 

 sides, dull ochrey-yellow, cinnamon, or rusty-yellow, more rarely 

 clear yellow ; stem very much wrinkled, colour of the wall of the 

 sporangium, either stiff and erect, or nodding and prostrate ; 

 elaters fusiform, at the centre from *0042 mm. thick, not con- 

 spicuously narrowed to the ends, terminating in a smooth point 

 twice the length of the diameter of the elater ; spirals three, turn- 

 ing to the right, very prominent, with intervening, even, or a little 

 uneven depressions ; spores -OHS-'OloS mm., with a stout mem- 

 brane delicately warted. Rtfki. Mon., 246. 



a. genuina. 



Sporangia pyriform, red or dark- brown, sometimes 

 black, opaque. Mass of spores and elaters cinnamon or 

 rusty-brown, sometimes dull dark-ochre. Stem rigid, erect. 



I. Simplex. Stem simple. 



II. Botrytis. Stems connate, fasciculate, crowned 

 with numerous sporangia. 



/3. Lorinseriana. 



Sporangia pyriform, bright red-brown, a little shining on 

 the surface. Mass of spores and elaters dull ochrey-yellow. 

 Stem usually not rigid, bending in an arcuate manner or 

 prostrate. 



I. Simplex. Stem simple. 



II. Botrijtls. Stems connate, fasciculate, crowned 

 with numerous sporangia. 



