24 THE ROYAL SOCIETY OF CANADA 



Explanation of Plates I, II, III and IV. 



Illustrating Professor Bulk/ s Address on Micheli and the Discovery 

 of Reproduction in Fungi. 



All the figures in the following plates are taken from Micheli's 

 Nova Plantarum Genera (1729) and have been copied and arranged 

 by A. H. R. Buller. 



Plate I. 



Drawings illustrating reproduction in laminated Hymenomycetes. 

 A, isolated spores; B, seventeen developmental stages; C, a full- 

 grown fruit-body with the pileus cut in two showing the spores (seeds 

 of Micheli) on the gills; D and E, two leaves showing three stages, 

 a, b, and c, in the development of a fungus. F. I, P, N, and K, isolated 

 gills of various fruit-bodies all bearing spores: in F, P, N, and K, the 

 spores are scattered, but in I they are in groups of four. In F, K, 

 and N, there is a fringe of isolated "flowers" on the free gill margin, 

 whilst in I the "fiowers" are in small tufts. The "flowers" of F are 

 shown magnified at G, those of K at L and M, those of I at J, and 

 those of N to the left of O. The gill P is bearing cystidia (transparent 

 bodies of Micheli) and spores; Q, two conical cystidia; R, two pyra- 

 midal cystidia. H, spores from the «gill F; on the right of O, spores 

 from N. A-C, F-J, P-R, from Micheli's Tab. 73; D, E, from Tab. 

 77; L-M, from Tab. 76: N-0 from Tab. 65. 



Plate II. 



Drawings illustrating reproductive organs and spores in Boletus 

 and Hydnum. A-H, Suillus (=Boletus edulis Fr.) A, the pileus of 

 a fruit-body cut in two to show the structure: the layer of tubes at 

 b is shown as easily separating from the flesh at a. B, a single tube. 

 C, several tubes adhering together. D, a tube cut open to show the 

 spores (seeds of Micheli). E, isolated spores from a tube. F, showing 

 spores at the mouth of a tube, as seen with the microscope. G, an 

 inverted tube showing six "flowers" at its mouth, H, isolated "flow- 

 ers" consisting of a single filament, as seen with the microscope. 

 I-K, Erinaceus (= Hydnum repandum Fr.). A fruit-body inverted to 

 show the teeth. J, two teeth. K, spores from the teeth. A-H 

 from Micheli's Tab. 68; I-K, from Tab. 72. 



Plate III. 



Figures illustrating various fungi with their spores. A, Mucilago 

 (a Plasmodium on a leaf). B-E, Clathroides (=Arcyria punicea 

 Pers.); B, fruit-bodies natural size; C and D, the same enlarged. 



