141 
17. tremulens Leight. Graph. 1854 p. 37 p.p.: thallus albidus, 
lsevis, opacus, spoth. pruin., apice plus minus obtuss. 
exs. Leight. 22. 
18. diffusa Leight. Graph. 1854 p.33 sec. specimen missum: 
thallus subnullus, solum apothecia margine albo eireumeingens, 
apoth. emerg., simplicis, maiora, dispersa, acuta, pruinosa. 
Planta cvrescit in cortice laevi Fraxini. 
19. horisonlalis Leight. Graph. 1854 p. 84. Gr. beiuligna b. 
alnes E. Fries Consp. sec. specimen E. Fr, & me visum, vix 
differt. 'Thallus albid., lsevis, apoth. plus minus parallela et 
varie disposite. Comp. flexuoss Ach. meth. 1803 p. 28, univ. 
267: apoth. interdum reticulato-connexa. 
exs. Leight. 244; Mudd 217 (discus magis pruinosus). 
€. Thallus epiphloeodes, apothecia immersa: Graphis ser- 
penlina Ach. prodr. 1798 p. 25. 
v. Apoth. tenuia, epruinose; discus linearis. 
20. spalhes Ach. univ. 1810 p. 270? exs. Schleich. V. 77 
sec. Ach. 
exs.: ‚thallus opacus: Hepp 890 c. iremul. sin.; Bad. Cr. 
671 a. dexir., sin. (dextr. thallo candido). 
21. flexuosa Leight. Graph. 34 sec. specimen missum: plante 
analoga est f, radiatae Leight. 
VE. Apotheciorum discus latior, canaliculatus, caesio- 
pruinosus. 
22. serpenlina (Ach. univ. 269) Schaer. Enum. 151. 
®) discus paullo angustior, planta ad pulveruleniam Pers. 
accedens. 
exs.: Schleich. I. 67, V. 75; Schaer. 89, Flot. 68 A, 
B, ©; Mong. N, 361, Rchb. Sch. 5 sin. inf. adest; Hepp 
886 2 minor; 3 rad. inf.; 890 a; Koerb: 76adest; Schweiz. 
Cr. 71; Bad. Cr. 672; Mudd 219 sin., 221; Trevis. 249 inf., 
250, 255; Rabh. 173. . 
b) eadem planta ad Pinum piceam: exs. Zw. 305, Anzi m. r. 340. 
©) diseus latus: exs.: Schleich. II. 77, V. 76; Fries suec. 33, 
124 dext. inf.; Scheer. 91; Hepp 886 3 rad. sup.; Stenh. 
116 sup.; inf. dextr.; Malbr. 294, (Koerb. 258 forma mon- 
stros8). 
23. eutypa Ach. univ. 1810 p. 270: 
a) supra corlicem Juglandis: exs. Schleich, V. 76, Hepp 340, 
Anzi ın. r. 342; — Venet. 109 (apoth. minus conferta: f- 
Juglandis Garor. apud Mass. mem. 1853 p. 108). 
