Thelenella. 215 



11. Theleneila. 



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

 (em.), Exp. Pyrenoc. (1858) p. 62 (em.). Verrucaria 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.); Miill. Arg., Princ. Classif. (1862) p. 80 (em.); Th. Fr., Polyhl. Scand. 

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

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

 16 (em.). PolyUastia Miill. Arg., Lich. Beitr. (FI. 1882) n. 490 (em., neque 

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

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

 n. 541 (em.), Vjr. Cub. (1885) p. 376 et 403 (em.). Bathelixm sect. Fhylloha- 

 thelitmi Miill. Arg., Lich. Beitr. (FI. 1883) n. 680 (em.). Fhyllohathelium Miill. 

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



Thallus cmstaceus, uniformis, hypothallo et hyphis medul- 

 laribus substrato affixus, rhizinis destitutus, strato corticali nuUo 

 aut evanescente amorphoque, vulgo fere totus gonidia continens. 

 Gonidia chroolepoidea (ceUuHs minutis, concatenatis) aut proto- 

 coccoidea (in Th. subluridelia Wainio) aut pleurococcoidea 

 (in Th. modesta Nyl.) aut gloeocapsoidea [in Th. sphinctri- 

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

 tis: in sect. Phyllobathelio Mull. Arg.l. Apothecia simphcia (in 

 sect. Euthelenella Wainio) aut peritheciis amphitheciisve conflu- 

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

 vel gen. Batheho MuU. Arg.]. Feritliecium rectum, albidum aut 

 fuhgineum fuscescensve. Paraphyses simphces aut parcissime vel 

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

 oblongae aut eihpsoideae aut subfusiformes, murales. Pycnoco- 

 nidia^) (quantum cognita) ,,fihformi-cyhndrica, arcuata'' (Nyl., 

 Exp. Pyren. p. 63). 



In Folyhlastia rufa Mass., quae typus est generis Folyhlastiae, 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. 



^) E descriptione V. liigescentis^^ , a cel. Nylandro in FI. 1886 p. 177 

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

 genus pertineat. Aeque defecte plurimas descripsit Yerrucarias suas, notas 

 primarias, quibus in lichenographia hodierna genera sectionesque distinguuntur, 

 omnino omittens. 



