102 



RESEARCHES ON FUNGI 



following characteristics of the hymenium of the Armillaria Sub- 

 type : (I) the monomorphism of the basidia which contrasts with 



Fig 



46. — Collybia radicata. The loose hymenium of the Armillaria Sub-type. 

 A, surface view of the hymenium in the middle of the spore-discharge period, 

 showing the spores ; at a, one of the four spores has just been discharged ; 

 at b and c, almost ripe spores ; at f?, a basidiimi with spores not yet of full 

 size ; at c, a similar basidium, but one spore is aborted ; at/ and g, very young 

 spores ; at h, four sterigmata about to develop spores. B, a surface view 

 of the hymenium showing : basidiurn-bodies, b, containing abundant granular 

 protoplasm, and paraphyses, p, containing large vacuoles. C, a cross-section 

 througli the upper part of the hymenium : a, a basidium bearing spores ; 

 b, a basidium just beginning to develop spores ; c, a protuberant basidium 

 whicli will soon develop sterigmata and spores ; d, younger basidia and para- 

 physes ; e, a cystidium with a rounded head. D, a cross-section through 

 a hymenium showing a few elements with their contents : a and b, young 

 basidia filled with granular protoplasm ; c, an older basidium, elongating 

 and about to form sterigmata, now filled with granular protoplasm ; d, a 

 basidium with four full-size spores, the protoplasm is still passing into the 

 spores through the open sterigmata and, in consec£uence, tlie vacuole, v, is 

 still growing in size ; e, f and g, paraphyses containing large vacuoles and 

 diminisliing protoplasmic contents ; h, a cystidium, only slightly swollen 

 at its free end, containing vacuolated protoplasm. Magnification, 293. 



the polymorphism of the Ijasidia in the Psathyrella Sub-type and 

 in the Coprinus Sub-types, and {-2) the fact that the paraphyses, 

 unlike those of the Psathyrella, Bolljitius, and Coprinus Sub-types, 



