28 Charles E. Besscy 



poorly developed in most cases; apothecia in thalline warts in 

 which they are sunken. Thclocarpoi, Acardst>ora, BiatorcUa. 

 (Pf. I, I*, 150.) 



Family 71. Ephebaceae. Dwarf-fruticose or filiform-branched, 

 crustaceous to scaly lichens with Scytoncma or Stigoncuia gon- 

 idia; apothecia small, sunken or superficial. Spilonema, Ephcbe, 



(Pf. I, I^ 154.) 



Family y2. Pyrenopsidaceae. Crustaceous, foliose to fruticose 

 lichens, with Gloeocapsa, Chroococcits, or Xanthocapsa gonidia; 

 apothecia small, closed at first. Pyrenopsis, Svnalissa, Thyrca. 

 (Pf. I, I*, 158.) 



Family 73. Lichinaceae. Crustaceous to scaly or fruticose- 

 branched lichens, with Rivularia gonidia ; apothecia spheroidal, 

 closed, sunken, with a bright-colored margin. Pterys[iitm, TJchina. 

 (Pf. I, I*, 164.) 



Family 74. Collemataceae. Gelatinous to crustaceous, scaly, 

 foliose or fruticose lichens, with Nostoc gonidia ; apothecia closed 

 or open, sunken or sessile, not margined. Physma, Collema, Lep- 

 togium. (Pf, I, I*, 168.) 



Family 75. Heppiaceae. Scaly, foliose, irregular or fruticose 

 lichens with Scytoncma gonidia ; apothecia sunken, not margined. 

 Heppia. (Pf. i, i*, 176.). 



Family yG. Pannariaceae. Crustaceous-corneous, to scaly and 

 foliose lichens (not gelatinous), with Nostoc or Scytoncma gon- 

 idia, rarely with Plcnrococcus gonidia ; apothecia superficial or 

 marginal. Pannaria, Psoroina, Coccocarpia. (Pf. I, i"^', 178.) 



Family yy. Stictaceae. Foliose lichens with Palmella or Nos- 

 toc gonidia; apothecia superficial or marginal, sessile or shield- 

 shaped. Loharia, Sticta. (Pf. I, i*, 185.) 



Family 78. Peltigeraceae. Foliose lichens with PahncUa or 

 Nostoc gonidia ; apothecia flat, large, submarginal, dark colored. 

 Peltigcra. (Pf. I, i*, 190.) 



Family 79. Pertusariaceae. Crustaceous lichens with Proto- 

 coccus gonidia ; apothecia mostly punctiform, single or clustered 

 in thalline warts. Pertnsaria. (Pf. I, i*, — .) 



Family 80. Lecanoraceae. Crustaceous lichens with Proto- 

 coccus gonidia; apothecia sunken, not margined. Lccanora. (Pf. 

 I. i^-.) \ . 



^02 



