DESCRIPTION OF PLATE XII. 



Illustrating Mr. Currey's paper on the reproductive organs of 



Fungi. 



rig. 

 1. — A peritliecium of the sijliteropsoid form of Sphceria herharum with 

 its mycelium, attached to a fragment of the cuticle of a dead stem 

 of Senecio Jacohcea, magnified about 110 diameters. 



2. — Transverse section (magnified 110 diameters) of a similar perithecium, 

 showing the spermatia in its interior. The knotty mycelium is 

 still attached. 



3. — Reproductive gemmaa, or conidia, which grow directly from the 

 mycelium of Sphceria herhanim, magnified 220 diameters. 



4. — An ascus and sporidia of S^^haria herharum. The sporidia have 

 germinated in the interior of the ascus, and have broken through 

 the membrane. Magnified 220 diameters. 



5 and 6. — Germinating sporidia of Sphceria herharum. In fig. 5 are seen 

 globular vesicles at the extremity of short lateral branches. Mag- 

 nified 220 diameters. . 



7. — Fragment of a germ-filament of a sporidium of Sphceria herharum. 

 At the extremity of a short lateral branch a nucleus has been 

 formed, and a fresh germ-filament thrown out. 



8. — A germinating sporidium of Sphceria herharum, showing the forma- 

 tion of a lateral bud similar to those shown in fig. 3. Magnified 

 220 diameters. 



9. — Asci and sporidia of Sphceria herharum, magnified 220 diameters. 



10. — Ascus and sporidia of Sphceria (complanata ?), magnified 220 dia- 

 meters. 



11. — One out of a number of similar bodies found in the interior of the 

 perithecia of Sphceria, complanata, magnified 220 diameters. 



12. — Young states of asci oi Sphceria Cryptosporii, magnified 220 diameters. 



13. — (a), perfect asci, with sporidia of Spjhceria Cryptosporii. (h), a spo- 

 ridium from one of the asci. (c), a very young ascus. {d), an 

 ascus rather more advanced, (e), the most common form of spore 

 of Cryptvsporium vuhjare. (/), another form of spore of the 

 same plant. All magnified 220 diameters. 



14. — Asci and sporidia of Sphcvria found growing with Crypiosporium 

 vulgnre, magnified 220 diameters. 



