Thelenella. 215 



11. Thelenella. 



Nyl. in Bot. Notis. 1853 p. 164 (em.), Ess. Xouv. Classif. (1855) p. 193 

 (em.), Exp. Pyrenoc. (1858) p. 62 (em.). Yerrucaria st. TJielenella Nyl. in 

 Hue Addend. (1888) p. 289 (em.). Microglaena Koerb., Syst. Germ. (1855) p. 

 388 (em.); Th. Fr., Lich. Arct. (1860) p. 261 (em.); Gen. Heterolich. (1861) p. 

 105 (em.); Mull. Arg., Princ. Classif. (1862) p. 80 (em.); Th. Fr., Polybl. Scand. 

 (1877) p. 3 et 6 (em.). Bathelium Trev., Fl. 1861 p. 21 (em.), hand Ach.; 

 Mull. Arg., Pyr. Cub. (1885) p. 376 et 394 (em.), Pyr. Feean. (1888) p. 4 et 

 16 (em.). Polymastia Mull. Arg., Lich. Beitr. (Fl. 1882) n. 490 (em., neque 

 Mass., Ptic. Lich. Crost. 1852 p. 147, nee Th. Fr., Polybl. Scand. p. 8), Pyr. 

 Cub. (1885) p. 376 et 407. Clathroporina Mull. Arg., Lich. Beitr. (Fl. 1882) 

 n. 541 (em.), Pyr. Cub. (1885) p. 376 et 403 (em.). Bathelium sect. Phylloba- 

 thelium Mull. Arg., Lich. Beitr. (Fl. 1883) n. 680 (em.). Phyllobathelium Mull. 

 Arg., Lich. Beitr. (Fl. 1890) n. 1547 (em.). 



Thallus crustaceus, uniformis, hypothallo et hyphis medul- 

 laribus substrato affixus, rhizinis destitutus, strato corticali nullo 

 aut evanescente amorphoque, vulgo fere totus gonidia continens. 

 Gonidia chroolepoidea (cellulis minutis, concatenatis) aut proto- 

 coccoidea (in Th. sub lurid ell a Wainio) aut pleurococcoidea 

 (in Th. modest a Nyl.) aut gloeocapsoidea [in Th. sphinctri- 

 noide (Nyl.)] aut phycopeltidea [cellulis in membranam conna- 

 tis: in sect. Phyllobathelio Mull. Arg.]. Apothecia simplicia (in 

 sect. Eu thelenella Wainio) aut peritheciis amphitheciisve conflu- 

 entia et pseudostromata formantia [in sect. Meristosporo (Mass.) 

 vel gen. Bathelio Mull. Arg.]. Perithecium rectum, albidum aut 

 fuligineum fuscescensve. Paraphyses simplices aut parcissime vel 

 bene ramoso-connexae. Sporae 8:nae aut pauciores, decolores, 

 oblongae aut ellipsoideae aut siibiusiformes, murales. Pycnoco- 

 nidia 1 ) (quantum cognita) „filiformi-cylindrica , arcuata" (Nyl., 

 Exp. Pyren. p. 63). 



In Polyblastia rufa Mass., quae typus est generis Polyblastiae, para- 

 physes non sunt evolutae, in Thelenella modesta Nyl. autem bene evolutae et 

 parce ramoso-connexae (in mus. Paris.) quare nomen posterius huic generi est 

 praeferendum. 



J ) E descriptione „V. higescentis", a eel. Xylandro in Fl. 1886 p. 177 

 data, non satis elucet, anne planta ab eo spermogoniifera descripta ad hoc 

 genus pertineafc. Aeque defecte plurimas descripsit Verrucarias suas, notas 

 primarias, quibus in lichenographia hodierna genera sectionesque distinguuntur, 

 omnino omittens. 



