90 FUNGUS-FLOEA. 



** Spores hrown. 

 Abrothallus. Parasitic on lichens. 

 Karschia. Not parasitic on lichens. 



C. Spores 2-^many-septate. 

 * Spores hyaline. 



Fatellaria. Ascophore discoid, plane; spores narrowly 

 elliptical or fusoid. 



Heterosphaeria. Ascophore subglobose ; spores elliptic- 

 oblong. 



Scutularia. Spores very long and slender, needle- 

 shaped. 



Celidium. Parasitic on lichens. 



D. Spores muriform. 

 Blitrydium. 



FIGURES ILLUSTRATING THE PATELLABIEAE, &c. 



Fig. 1, Bliylisma punctatum. Fries, on leaf of sycamore, nat. size ; — Fig. 2, 

 Bscus and paraphyses of same; highly x ; — Fig. 3, spores of same; 

 X 300; — Fig. 4, Cryptomyces aureus, Mass., small specimen on willow 

 branch, nat. size ; — Fig. 5, spores of same ; x 300 ;■ — Fig. 6, conidia of 

 same; x 300; — Fig. 7, Coccophacidium pini, Kelim; nat. size; — Fig. 8, 

 sections of same in various stages of development ; — Fig. 9, asous and 

 paraphyses of same ; — Fig. 10, spore of same ; x 300 ; — Fig, 11, Plirag- 

 nwnaevia liysterioides, Behm ; nat. size; — Fig. 12, asous and paraphyses of 

 same ; x 300 ; — Fig. 13, Gryptodiscus microstomus, Saoc. ; nat. size ; — 

 Fig. 14, ascus and paraphyses of same; x 300; — Fig. 15, Fatellaria 

 clavispora, B. & Br. ; nat. size ; — Fig. 16, same ; mag. ; — Fig. 17, sections 

 of same ; x ; — Fig. 18, portion of exterior and margin of excipulum of 

 same ; — Fig. 19, ascus and paraphyses of same ; highly x ; — Fig. 20, 

 spores of same ; x 300 ; — Fig. 21, Seutularia citrina, Sacc. ; nat. size; — 

 Fig. 22, same; x ; Fig. 23, section of same; x ; Fig. 24, excipulum and 

 margin of same in section ; x ; — Fig. 25, ascus and paraphyses of same; 

 highly X ;— Fig. 26, spore of same ; x 300 ; — Fig. 27, Patellaria loni- 

 cerae, Phil., spore ; x 300 — Fig. 28, Seleroderris Soughtoni, Saoc. ; nat. 

 size ; — Fig. 29, section of stroma with ascophores of same ; x ; — Fig. 30, 

 asous and paraphyses of same ; highly x ; — Fig. 31, spores of same ; 



