28 



BRITISH MYCETOZOA. 



[COMATRICHA. 



4. C. typhoides Rost. — Sporangia shortly cylindrical, brown 

 after the disappearance of the silvery evanescent sporangium-wall. 

 Columella reaching to near the apex of the sporangium. Capillitium 

 a close network of pale-brown flexuose threads with many free 

 ends. Spores pale violet-brown, almost smooth, 4 to 7 /x diam. 



Hab. On rotten wood. 



5. C. Persoonii Rost. — Sporangia cylindrical or clavate, rufous- 

 brown, including the stalk about 1 mm. high; columella nearly 

 reaching the apex. Capillitium dense, of flexuose brown threads, the 

 ultimate branches looped, with few free ends. Spores pale lilac- 

 brown, minutely warted, 6 to 8 fn. diam. 



Hab. On dead leaves. 



6. C. rubens Lister. — Sporangia subglobose or pyriform, pinkish- 

 brown, including the stalk about 1*5 mm. high. Columella branched 

 above, and reaching two-thirds the height of the sporangium. 

 Capillitium brownish-violet, branching from all parts of the colu- 

 mella, with slender free ends. The lower branches have broad 

 attachments to the lower part of the sporangium-wall, which forms 

 a persistent cup. Spores as in C. Persoonii. 



Hab. On dead leaves. 



Genus 15. ENERTHENEMA Bowman.— Sporangia stipitate ; 

 columella reaching to the summit of the sporangium. Capillitium 

 springing from beneath the superficially extended apex of the 

 columella. 



1. E. elegans Bowm.— Sporangia globose, black. Capillitium 

 threads long, sparingly branched. Spores greyish-brown, spinulose, 

 S to 10 fj. diam. 



Hab. On dead wood. 



Fig. 23. 

 Enerthenema elegans Bowm. 



a. Group ol' sporangia. Twice 



the natural size. 



b. Sporangium. Magnified 16 



times. 



c. Sporangium deprived of 



spores, showing the capil- 

 litium. Magnified 16 times. 



Fig. 24. 

 Lamproderma irideum Mass. 



a. Group of sporangia. Magni- 



fied 2j times. 



b. Sporangium deprived ot 



spores, showing capillitium. 

 Magnified 25 times. 



Genus 16. LAMPRODERMA Rostafinski.— Sporangia globose 

 or ellipsoid, stipitate; sporangium-wall somewhat persistent, shining 



