CARPOMYCETEAE 341 



Family 29. Buelliaceae. Crustaceous, with Protococ- 

 cus hosts. — Buellia. 



Family 30. Physciaceae. Foliose to fruticose, with 

 Protococcus hosts. — Physcia. 

 Order Caliciales. Powdery Lichens. Common fungi, 

 and lichen-forming fungi; apothecia 

 spheroidal, pulverulent. 



Family 31. Protocaliciaceae. True fungi, sapro- 

 phytic. — Mycocalicium. 



Family 32. Caliciaceae. Crustaceous lichens, with 

 Protococcus or Stichococcus hosts. 

 — Calicium. 



Family 33. Cypheliaceae. Crustaceous lichens with 

 Protococcus or Trentepohlia hosts. 

 • — Cyphelium, Tylophoron. 



Family 34. Sphaerophoraceae. Foliose or fruticose 

 lichens with Protococcus hosts. — 

 Sphaerophorus. 

 Order Phacidiales. Little Cup-fungi. Common fungi, 

 spore-fruits open (apothecia). 



Family 35. Stictidaceae. Fleshy, yellow. — Stictis, 

 Propolis. 



Family 36. Tryblidiaceae. Leathery or carbonace- 

 ous, black. — Tryblidium, Scleroder- 

 ris. 



Family 37. Phacidiaceae. Leathery or carbonace- 

 ous, black. — Phacidium, Rhytisma. 

 Order Exoascales. Pocket Fungi. Common fungi; 

 apothecia much reduced and sim- 

 plified. 



Family 38. Exoascaceae. Parasitic in higher plants. 

 — Exoascus, Taphrina. 



Family 39. Ascocorticiaceae. Saprophytic, asci 

 forming a cushion. — Ascocorticium. 



Family 40. Endomycetaceae. Asci single, not in 

 masses or in cushions. — Endomyces, 

 Eremascus. 

 Order Pezizales. Cup-fungi. Common fungi; apothe- 

 cia at length cup-shaped, fleshy or 

 leathery. 



