COPRINUS COMATUS 



159 



Perhaps the foregoing remarks may stimulate someone to elucidate 

 them. 



In making camera-lucida drawings of the living hymenium, owing 

 to certain optical difficulties, it is not easy to sketch the spores, the 

 basidia, and the paraphyses all at one time. However, a complete 

 surface drawing is represented in Fig. 62. The exact positions of the 

 spores are shown, and they are the same as those already given in 

 Fig. 60, B (p. 153). The basidia 

 and paraphyses have been added 

 semi-diagrammatically. If it were 

 possible, I should remove the cor- 

 responding drawing in the first 

 volume of these Researches (Plate 

 III, Fig. 15) and should set this 

 one in its place. The old drawing 

 shows only one set of basidia and, 

 as already explained, was made at 

 a time when I thought that the 

 basidia, in general, were all of one 

 length and before the idea of two 

 generations of basidia had come 

 into my mind. The new drawing 

 shows clearly enough the basidia 

 of the first and second generations 

 and the manner in which they are 

 crowded together so that the spores 

 of the former often overlap in part the spores of the latter. Here 

 then, at last, we have a surface view of the hymenium of Coprinns 

 comatus which shows, accurately and in detail, the true relations of 

 all the elements. Up to the time of publication of this volume, 

 there was only one other such illustration of a Coprinus in botanical 

 literature, namely, one for Coprinus sterquilinus which was drawn 

 by myself to accompany a paper for Pfeffer's Festschrift.^ 



A semi-diagrammatic drawing representing a cross-section 



A. H. R. Buller, " Die Erzeiigung und Befreiung der Sporen bei Copriyius ster- 

 quilinvs;' Pfeffer's Festschrift, identical witli Jakrb. f. iciss. Bot., Bd. 56, pp. 299-329, 

 Taf. II and III. 



Fig. 62. — Coprinus comatus. Surface 

 view of an area of the hymenium 

 0- 15 mm. wide, shortly before dis- 

 charge of tlie spores showing all the 

 elements. The positions of the 

 spores were determined with the 

 cainera lucida and are the same 

 as those shown in Fig. 60. The 

 basidia and paraphyses have been 

 added semi-diagrammatically. The 

 long basidia, /, and the short basi- 

 dia, s, along with the paraphyses, 

 p, form a beautiful mosaic-work. 

 Magnification, 293. 



