34 



BRITISH MYCETOZOA. 



[Rf.ticularia. 



2. It. lobata Lister. — ^Ethalia small, about o'S mm. across, 

 subrotund or lobed, depressed, crowded or clustered, iridescent 

 rusty-brown. Spores rusty-brown, sharply reticulated, 6 to io ^ 

 diam. 



Hab. On stumps, fir and chestnut. 



Sub-cohort \\.—CALONEMINEJ£. 



ORDER I.— TRICHIACEjE. 



Genus 27. 



Fig. 35- 

 Trichia affinis de Bary. 



a. Group of sporangia. Twice 



natural size. 



b. Elater. Magnified 250 times. 



c. Spore. Magnified 400 times. 



TRICHIA Haller. — Sporangia stalked or sessile ; 

 elaters free, pointed at each end, thickened 

 with two to five spiral bands. 



1. T. favoginea Pers. — Sporangia 

 yellow, clavate or globose, crowded, sessile, 

 seldom shortly stalked. Elaters 7 tx diam. 

 with 5 spiral bands. Spores yellow, 13 

 to 15 tx diam., widely reticulate with deep, 

 narrow bands, giving a border about 2 /x 

 wide. 



Hab. On fir stumps. 



2. T. verrucosa Berk. — Sporangia 

 yellow, pyriform, stalked, gregarious or 

 solitary. Stalks 0/7 mm. long; in foreign 



gatherings they are sometimes 2 mm. long and combined in clusters. 

 Elaters 5 11 diam. with 3 to 5 spiral bands. Spores 13 to 15 tx. diam., 

 reticulate with shallow, narrow bands, giving a border 1 tx wide. 

 Hab. On fir bark. 



3. T. affinis de Bary. — Sporangia yellow, globose, crowded, 

 sessile. Elaters 5 11 diam., with 4 to 5 spiral bands. Spores 13 to 

 15 jx diam., reticulated with shallow pitted bands giving a border 

 1 fx, wide. 



Hab. On stumps. Common. 



4. T. persimilis Karst. — Sporangia yellow-brown, globose, 

 crowded, sessile. Elaters 4-5 tx. diam., with 4 to 5 spiral bands, 

 spinulose. Spores yellow-brown, 1 1 to 14 tx. diam., with the reticula- 

 tion broken into irregular, shallow, pitted warts ; border interrupted. 



Hab. On stumps. Common. 



5. T. scabra Rost. — Sporangia orange-yellow, globose, crowded, 

 sessile. Elaters 5 tx diam., with 4 to 5 irregular spiral bands, often 

 spinose. Spores yellow, 10 tx diam., closely warted or minutely 

 reticulate. 



Hab. On stumps. Common. 



6. T. varia Pers. — Sporangia ochraceous, globose or turbinate, 

 crowded or scattered, sessile or on short dark stalks. Elaters 4 tx. 



