Bui. 1053, U. S. Dept. of Agriculture. 



PLATE IV. 



Basidiospore Studies of Lenzites and Trametes. 



(X 475.) 



Fig. 1. — Germinating basidiospores of Lenzites trabea on malt agar. Fig. 2. — Oidia of Lenzites 

 trabea from secondary aerial mycelium on malt agar. Fig. 3. — Stages in formation of 

 chlamydospores upon submerged mycelium of Lenzites trabea in malt agar. Fig. 4. — Chlamy- 

 dospores and chlamydosporelike bodies of Lenzites trabea upon submerged mycelium in malt 

 agar, one of them germinating. Fig. 5. — Germinating basidiospores of Tramestes serialis on 

 malt agar. Fig. 6. — Stages in formation of chlamydospores of Trametes serialis on malt agar. 

 Note contraction of protoplasm and formation of walls. Fig. 7. — Chlamydospores of Trametes 

 serialis from submerged mycelium in malt agar. Fig. 8. — Chlamydospo're of Trametes serialis 

 on aerial mycelium in malt agar tube, showing old walls. Fig. 9. — Germinating chlamydo- 

 spores of Trametes serialis on malt agar. Fig. 10. — Irregular hypha from tertiary mycelium of 

 Trametes serialis at top of agar slant culture. Fig. 11. — Sprouting of clamp of Trametes serialis. 

 Fig. 12. — Clamps, anastomosing of hyphae, and other irregularities from agar slant cultures of 

 Trametes serialis. 



