Acta Societatis pro Fauna et Flora Fennica, 49, N:o 2. 233 



ned at the top, and the apex, which is also black, projecting 

 from it, with a narrow neck, at an oblique angle with the sur- 

 face of the frond". Postea autem in Leight. Lich. Great. Brit. 

 3 ed. (1879) p. 440 „apothecia incognita" indicantur. — Habitu 

 valde simile est Corellae Brasiliensi Vain. (Etud. Lich. Bres. II 

 p. 243) et Corellae tomentosae Vain. (Add. Lich. Ant. p. 213), 

 quae, gonidiis scytonemeis instructae, forsan Corae affines sunt. 

 Affinitas Coriscii viridis igitur adhuc omnino incerta est. 



2. Siphula Fr. 



Lich. Eur. Ref. (1831) p. 406; Nyl. Syn. Lich. p. 261, Lich. Scand. 



(1861) p. 67; Koerb. Syst. Lich. Germ. (1855) p. 53; Th. Fr. Lich. Arct. 

 (I860) p. 31, Gen. Heterol. (1861) p. 113; Stizenb. Beitr. Flechtensyst. 



(1862) p. 175; Tuck. Gen. Lich. (1872) p. 230; Zahlbr. Ascol. (1907) p. 

 225. Siphonia Fr. Vet. Ak. Handl. 1821 p. 324. 



Thallus subfruticulosus aut squamosum, erectus aut 

 prostratus adscendensve, albidus, heteromericus, ex hyphis 

 longitudinalibus, crebris formatus, intus solidus, hypothallo 

 basali, crebre contexto, fruticuloso aut crustaceo, bene evo- 

 luto aut vulgo parum evoluto evanescenteve, substrato affi- 

 xus. Conidangia thallo immersa. „Sterigmata constricte 

 articulata, apicibus et lateribus conidia efferentibus, conidia 

 bacilliformia oblongave, recta" (sec. annot. Nyl. in n. 40195), 

 vel „leviter curvula" (sec. Th. Fr. Lich. Arct. p. 31). Go- 

 nidia globosa, flavescentia (habitu cystococcoidea). 



In S. Pinckeringii Tuck. (Lich. Wilk. U. St. Expl. Exp. p. 124, tab. 

 2 f. 4, Gen. Lich. p. 230) apothecia observata sunt „abortiva, lateralia, 

 quodammodo similia conceptaculis Sphaerophori" [ad S. torulosam (Thunb.) 

 a Nyl. in Lich. Exot. p. 236 relata est, sed ab ea jam thallo laeviore 

 differt]. Revera Sphaerophoreas, praesertim Acroscyphum et Tholurnam, 

 gen. Siphula in memoriam revocat. Cum Thamnolia ad trib. Siphuleorum 

 a Nyl. (Syn. Lich. p. 261) refertur. Siphula medioxitna Nyl. (Lich. Nov. 

 Zel. p. 15), apotheciis, quae Nyl. ipse „facile apothecia parasitae" esse 

 censet, ab Hue in Ann. Mycol. 1914 p. 509 denuo describitur et ad 

 novum genus Nylanderiellae, ad Pyrenothamnieas pertinens, relagatur, 

 evidenter erronee, nam haec apothecia a Pharcidiis peritheciis dimi- 

 diatis instructis non differunt. — Siphula singularis Vain, (a Wright in 

 Nova Anglia collecta, n. 202) hypothallo bene evoluto, crustaceo, verru- 

 culoso-inaequali, squamis adscendentibus, caespitoso-confertis obsito, 

 instructa est. 



