26 



RESEARCHES ON FUNGI 



in all essentials that of the Panaeolus Sub -type. In Fig. 16, B, 

 within the dotted contour-line, a, there is a group of basidia bearing 

 spores only partially grown. Here, therefore, is an area correspond- 

 ing to a light area on a gill of a Panaeolus. Surrounding this 

 group of basidia are others bearing spores which are full-grown. 



B A 





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Fig. 16. — Lepiota procera. Two surface views of the hj^menium, drawn with the 

 camera lucida, showing the spores only. A : a and b, small groups or strings 

 of basidia bearing partially grown spores ; c and d, isolated basidia bearing 

 half-grown spores ; e, basidia bearing spores of full size. B : within the dotted 

 area, a a, is a group of basidia bearing spores which have not yet attained full 

 size ; b, a collapsed basidiuin which has discharged its spores ; c f/, a string 

 of basidia bearing partially grown spores ; e, basidia bearing spores of full 

 size. The drawings afford evidence that the organisation of the hymenium of 

 Lepiota procera differs greatly from that of L. cepaestipes and, in the main, 

 resembles that of Panaeolus campanulatus and other representatives of the 

 Panaeolus Sub-type. Magnification, 293. 



Whether these spores have only just attained full size, or have long 

 attained full size and are mature and about to be discharged, one 

 cannot tell, since their walls do not develop any pigment ; but it 

 is likely that, if they belonged to a Panaeolus, they would be more 

 or less deeply pigmented and thus make up a dark gill-area. At A 

 in Fig. 16 is another area in which basidia with partially-grown 

 spores, a, b, c, and d, are scattered. Whether or not, if the spores 

 became pigmented when maturing, this area would exhibit a certain 

 amount of mottling, one cannot tell. The only means by which 



