VERRUCARIACEAE 



87 



(m) Spores 1-celIed, hyaline; asci 



2-4-spored 

 (n) Spores 2-celIed 

 r. Spores hyaline 

 s. Spores dark 

 (o) Spores x-celled 

 r. Spores hyaline 

 s. Spores dark 

 (p) Spores muriform; asci 1-8-spored 

 (q) Spores acicular to filiform 

 n. Ostiole radiate, torn or lob'd; spores 

 2-celled 

 y. Perithecia oblique or horizontal with 

 oblique or lateral ostiole 

 (w) Spores 2-celled, hyaline 

 (x) Spores x-celled 

 m. Spores hyaline 

 n. Spores dark 

 (y) Spores muriform 

 m. Spores hyaline 

 n. Spores dark 

 (z) Spores filiform 

 (d) Algae Phyllactidium or Cephaleurus 

 X. Perithecia with fascicled nearly horizon- 

 tal hairs at apex; spores x-celled, hya- 

 line 

 y. Perithecia glabrous 

 (x) Paraphyses present, persistent 

 m. Paraphyses simple, free 

 (m) Spores 2-celled, hyaline 

 (n) Spores x-celled, hyaline 

 r. Thallus crustose, uniform 

 s. Thallus orbicular, lobed at edge 

 (o) Spores muriform, hyaline 

 n. Paraphyses branched and united 

 (m) Spores 1-celled, dark 

 (n) Spores x-celled 

 r. Spores hyaline 

 s. Spores dark 

 (y) Paraphyses dissolving or lacking; 

 spores hyaline or nearly so 

 m. Paraphyses dissolving in mucus; 



spores acicular, spirally twisted 

 n, Paraphyses lacking; spores acicular, 

 not twisted 

 b. Thallus foliose or scaly-foliose 

 (1) Algae Pleurococcus 



(a) Perithecia with hymenial algae 



(b) Perithecia without hymenial algae 

 X. Paraphyses persistent 



(x) Spores 1-celled, dark; paraphyses 

 simple 



Monoblastia 75 



Pyrenyllium 77 

 Microthelia 75 



Arthropyrenia 75 

 Polythelis 75 

 Polyblastiopsis 78 

 Leptorhaphis 77 



Asteroporum 92 



Subfamily Paratheliae 84 

 Ditremis 84 



Pleurotrema 84 

 Parathelium 84 



Campylothelium 85; 18 

 Pleurotheliopsis 85 

 Trichotrema 84 

 Subfamily Strigulae 87 



Trichothelium 88 



Phylloporis 88 



Phylloporina 87 

 Strigula 89; 18 

 Phyllobathelium 88 



Haplopyrenula 88 



Raciborskiella 88 

 Microtheliopsis 



Phylloblastia 87 



Micropyrenula 87 

 Subfamily Dermatocarpae 



Endocarpum 73; 18 



Anapyrenium 71 



