108 
ENDOSPOREi?;, 
[STEMONITACE^, 
Subcohort \1.—AMAUR0GE2ETINEJE. Sporangia single, 
or combined into an sethalium, without deposits of lime; capil- 
litium and spores dark-brown or violet-brown, rarelj'^ pale. 
Order I. — Stemonitace^e. Sporangia stipitate ; sporangium- 
wall a simple delicate membrane, often evanescent ; stalk ex- 
tending within the sporangium as a columella from which the 
branching threads of the capillitium take theii- origin. 
KEY TO THE GENEEA OF STEMONITACEJE. 
Sporangium-wall evanescent. Capillitium springing from all parts 
of the elongated columella, ultimate branchlets united to form 
a sxiperficial net. (15) Stemonitis. 
Fig. 23. — Stemonitis splendens Eost. 
a. Group of sporangia. Natural size. 
b. Portion of capillitium and columella. Magnified 
42 times. 
Eig. 23. 
Sporangium-wall evanescent. Capillitium as in Stemonitis, but not 
forming a superficial net, or only imperfectly towards the base 
of the sporangium. (16) Comatricha. 
Fig. 24. — Coinatriclia ohtusata Preuss. 
a. Group of sporangia. Natural size. 
i. Sporangium deprived of spores showing the 
capillitium. Magnified 16 times. 
Sporangium -wall evanescent. Columella reaching to the apex of 
the sporangium, capillitium springing from beneath the super- 
ficially expanded end of the columella. (17) Enerthenema. 
Fig. 25.— Mierthenema elegans Bowm. 
a. Group of sporangia. Twice the natural size. 
J. Sporangium. Magnified 16 times. 
0. Sporangium deprived of spores, showing the 
capillitium. Magnified 16 times. 
Fig. 25. 
