4 SYSTEMATIC INDEX. 



Genus 4. BOLBXTXUS, Fr. Hymenophore almost distinct. 

 No universal veil, partial veil often obsolete. Gills 

 membranaceous, soft, becoming moist, but not melting, 

 powdered with the falling ovate, even, sub-ferruginous 

 spores. 



677. Boltoni, Pers. 



,, 7ft Cvitellinus, Pers. 



b '°' Crivulosus, B. & Br. 



679a. fragilis, Fr. 



679^. apicalis, Sm. 



680. titubans, Bull. 



681. tener, Berk. 



Genus 5. CORTINARIUS Fries. Veil like a spider's web, 

 distinct from the cuticle of the pileus, superficial. Hy- 

 menophore continuous with the stem. Gills persistent, 

 dry, becoming discoloured, powdered with the slowly 

 falling spores. Trama fibrillose. Spores globose or 

 oblong, sometimes apiculate, ochraceous on white paper. 



689 



928a 



9286 



720a 



720b 



690 



691 



