Coccocarpia. 207 



Tuck., Gen. Lich. (1872) p. 52, Syn. North Am. (1882) p. 124. Pannaria 

 Schwend., Enters. Flecht. II (1863) p. 194 (pr. p.). 



Thalhis foliaceus aut squamosus, monophyllus aut polyphyl- 

 lus, superne et distincte etiam inferne strato corticali obductus, 

 superne glaber, inferne rhizinis caeruleo-nigricantibus albidisve 

 aut hypothallo tomentoso (eodem colore) instructus. Stratum cor- 

 ticate superius ex hyphis longitudinalibus : ) parenchymatice sep- 

 tatis conglutinatis formatum, series paucas pluresve irregulariter 

 horizontales continens, loculis latitudine mediocribus (diametrum 

 hypharum strati medullaris leviter superantibus aut fere aequan- 

 tibus), parietibus tenuibus. Stratum medullare hyphis circ. 0,0 4 

 — 0,0 3 millim. crassis, leptodermaticis, increbre aut crebre sep- 

 tatis, longitudinalibus, sat laxe aut sat crebre contextis, partim 

 aut parte inferiore conglutinatis, quare hoc stratum sine limite in 

 stratum corticale inferius transit. Stratum corticate inferius ex 

 hyphis distincte longitudinalibus, crebre aut sat crebre septatis, 

 conglutinatis formatum, membranis tenuibus aut leviter incrassatis 

 (in G. Gay an a). Gonidia scytonemea (Bornet, 1. a), cellulis 

 caeruleo-virescentibus, in filamenta gyrosa brevia aut sat brevia 

 concatenatis et heterocystis hyalinis intercalaribus instructa, vagina 

 gelatinosa sat tenui induta, in zona infra stratum corticale supe- 

 rius disposita. Apothecia in ipsa superficie thalli aut rarius (in 

 C. Gay an a) infra stratum corticale enantia, demum elevata, pel- 

 tata basique bene constricta aut tota basi adnata, haud podicel- 

 lata. Excipulum saltern parte exteriore grosse pseud oparenchy- 

 maticum et ex hyphis radiantibus parenchymatice septatis forma- 

 tum, gonidiis destitutum (strato medullari stuppeo nullo). Hypo- 

 thecium pallidum aut obscuratum. Sporae 8:nae, oblongo- aut 

 ellipsoideo-fusiformes aut ellipsoideae aut globosae, simplices, de- 

 colores. Conceptacula pycnoconidiorum verrucas thallo obductas 

 formantia, intus albida. Sterigmata articulata, cellulis brevibus, 

 numerosis. Pycnoconidia cylindrico-oblonga, recta. 



1. C. pellita (Ach.) Mull. Arg., Lich. Beitr. (Fl. 1882) n. 421. 

 Farmelia Lich. Univ. (1810) p. 468 (hb. Ach.). Coccocarpia molyb- 

 daea Pers. in Gaudich. Voy. Uran. (1826) p. 206 (em.); Mass., Mem. 

 Lich. (1853) p. 55; Nyl., Syn. Cal. (1868) p. 22; Mull. Arg., Lich. 



M Conf. p. 206 (de Parmeliella plumbea). 



