GYMNOASCACEAE. 13 



FIGURES ILLUSTEATIXG THE GYMXOASCACEAE, &c. 



Fig. 1, Keith ia tetraspora, Sacc, fungua seen from above, after dehiscence ; 

 slightly X ; — Fig. 2, ascus and paraphysis of same, highly x ; — Fig. 3, 

 free spores of same; X 300; — Fig. 4, two plants of same on leaf of 

 juniper ; nat. size ; — Fig. 5, Ascomyces aurea, Fries, showing a blister 

 formed by the fungus on leaf of black poplar ; nat. size; — Fig. 6, section 

 through one of the blisters, showing the asci of the Ascomyces, each with 

 its basal cell, passing between the epidermal cells, n, of the host ; highly x ; 

 — Fig. 7, free spores of same ; one is producing elliptical secondary spores 

 by gemmation ; x 300 ; — Fig. 8, Ascomyces deformans, Fckl., section 

 through portion of a blister on a peach leaf, formed by the fungus, show- 

 ing the asci originating from a hypha running between the epidermis 

 and the cuticle ; a portion of the vegetative hyphsB of the fungus is seen 

 running between the cells of the host ; highly x ; — Fig. 9, free spores of 

 same: x 300; — Fig. 10, Cuccomyces striatus, Phil, and Plow., fungu.s 

 seen from above, after dehiscence; slightly X ; — Fig. 11, the same on a 

 fragment of dead bramble stem : nat. size ; — Fig. 12, ascus and paraphyses 

 of same; highly X ; — Fig. 13, free spores of same; x300;^Fig. 14, 

 Celidium varians, Arnold, several specimens growing as a parasite on the 

 thallus of the lichen Lecanora glavcomn ; nat. size; — Fig. 15, section 

 through ascophore of same; slightly x ; — Fig. lij, ascus and paraphyses 

 of same; highly x ; — Fig. 17, free spores of Siime ; x 300; — Fig. 18, 

 Abrothallus parmeliariiim. Am., ascophore viewed from above, parasitic 

 en the thallus of the lichen Parmelia saxntilis; slightly X ; — Fig. 19, 

 ascus and very much branched paraphyses of same ; highly x ; — Fig. 20, 

 free spores of same ; x 300 ; — Fig. 21, Thaciiliuiu infestans, Karsten, free 

 spores; x 300; — Fig. 22, !<lictis radiata, Pers., several specimens; nat. 

 size ; — Fig. 23, one specimen of same ; rather highly x ; — Fig. 24, ascus 

 and paraphyses of same; highly X : — Fig. 25, spore of same ; x 300; — 

 Fig. 26, spore of same; X 7,i0 : — Fig. 27, Xemiicyclus iiii-eiis, Sacc, 

 specimens on leaves of the Scotcli fir; nat. size; — Fi;,'. 28, oil specimen of 

 same : slightly X ; — Fig. 2y, ascus and paraphy.scs of same ; highly x ; — 

 Fig. 30, free spores of same ; x 300 ; — Fig. 31, Melittosporium pteridinum, 

 Sacc, ascus and paraphyses ; highly x : Fig. 32, spore of same ; x 300 ; — 

 Fig. 33, Melittosporium lichenicolum, Mass.. nscus ami paraphyses ; X 300 ; 

 — Fig. 34, Agyrium rufum, Fries, plants; slightly x; — Fig. 35, ascus- 

 and paraphyses of same; x300; — Fig. 36, Laquearia sphaeralis, Fr., 

 plants; nat. size ;— Fig. 37, section of an ascophore : slightly X ; — Fig. 38, 

 ascus and paraphyses of same; x 300; — Fig. 39, Trachila craterium, Fr., 

 portion of an ivy leaf with specimens; nat, size; — Fi^. 40, ascus and 

 paraphyses; X 300; — Fig. 41, a single plant of same after dehiscence; 

 slightly X ; — Fig. 42, Trochila ilicix, Crouan, portion of holly leaf with 

 specimens; nat. size; — Fig. 43, ascus and paraphysis; X 300; — Fig. 44, 

 section through ascophore of same; slightly x ; — Fig. 45, Gymnoascns 

 Reesii, Baran., portion of a fertile hypha bearing asci ; x 300 ; — Fig. 46, 

 Ascodesmis nigricans, Van Tieghem, portion of a tuft of asci and 

 paraphyses; X 300; — Fig. 47, Eeterosphaeria patjhi. Grey., plants on a 

 dead stem of umbelhfer; nat. size; — Fig. 48, section of ascophore before 



