106 



PHACIDIALES 



r. Tips of paraphyses little thick- 

 ened, smooth 

 (r) Spores 2-celled 

 (s) Spores x-celled 

 s. Tips of paraphyses clavate and 

 warted or spiny 

 (n) Paraphyses ramose and united 

 n. Spores muriform 

 (m) Paraphyses simple, not united 

 r. lips of paraphyses not thickened, 



smooth 

 s. Tips of paraphyses clavate, warted 

 or spiny 

 (n) Paraphyses ramose and united 

 (y) Spores dark 

 m. Spores 2-celIed 

 n. Spores x-celled 

 (m) Paraphyses simple, not united 

 (n) Paraphyses ramose, united 

 o. Spores muriform 

 y. Asci many-spored; spores fusoid to 

 acicular 

 (x) Paraphyses simple, not united 

 (y) Paraphyses ramose, united 

 (c) Algae Phyllactidium; spores x-celled 

 X. Spores hyaline; paraphyses ramose, 



united 

 y. Spores dark; paraphyses simple, not 

 united 

 (2) Thallus with a cortex; algae Trentepohlia; 

 spores x-celled 



(a) Spores hyaline 



X. Paraphyses simple, not united 

 y. Paraphyses ramose, united 



(b) Spores dark 



3. Thallus present, fruticose, erect, rarely crustose- 

 fruticose; spores x-celled 



a. Hyphae of cortex parallel with thallus surface 



(1) Apothecia elongate, furrowed; spores hya- 



line 



(2) Apothecia round 



(a) Hypothecium black; spores hyaline 

 X. Exciple with algae 



y. Exciple without algae 



(b) Hypothecium hyaline; spores brownish, 



spiny 



b. Hyphae of cortex perpendicular to surface 



(1) Apothecia elongate, furrowed 



(a) Apothecia immersed; hypothecium hya- 



line 



(b) Apothecia superficial; hypothecium black 



(2) Apothecia round 



(a) Spores hyaline; apothecia entire 

 X. Hypothecium hyaline 



Anomorpha i '4 

 Graphis 112; 23 



Psorographis 118 

 Opegrapha 110; 23 



Graphina 115 



Acanthothecis 117; 23 

 Helminthocarpum 118 



Melaspilea 111 



Phaeographis 114 

 Sclerographis HI 

 Phaeographina lib 



Graphinella 118 

 Spirographa 111 



Fouragea 118 



Micrographa 118 



Subfamily Dirinae 



Dirina 122; 23 

 Cyclographa 123 

 Dirinastrum 123 



Subfamily Roccellae 

 Ingaderia 123 



Dendrographa 124 

 Roccellaria 124 



Darbishirella 124 



Roccellographa 125; 23 

 Reinkella 125 



