CARPOMYCETEAE 341 



Family 29. Buelliaccae. 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. ProtocaHciaceae. True fungi, sapro- 

 phytic. — Mycocalicium. 

 Family 32. Caliciaceae. Crustaceous Hchens, 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. Endomycetaceac. Asci single, not in 

 masses or in cushions. — Endomyces, 

 Ercmascus. 

 Order Pkzizales. Cup-fungi. Conmion fungi; apothe- 

 cia at length cup-shaped, fleshy or 

 leathery. 



