A Synopsis of Plant Phyla 23 



Family 19. Melanconidiaceae. Perithecia buried more or less 

 deeply in the cushion-like stroma; saprophytes. Melanconis. 

 (Pf. I, I, 468.) 



Family 20. Diatrypaceae. Peritliecia immersed in the stroma 

 in one or more series, elongated into neck-like projections; sapro- 

 phytes. Calosphaeria, Diatrype. (Pf. I, i, 472.) 



Family 21. Melogrammataceae. Perithecia immersed in the 

 stroma (hemispherical) forming under the periderm, then break- 

 ing through, pointed or elongated into neck-like projections; 

 saprophytes. Botryosphaeria, Mclogramma. (Pf. I, i, 477.) 



Family 22. Xylariaceae. Perithecia peripheral in the massive 

 stroma, which is often hemispherical or clavate, black, or brown, 

 woody or carbonaceous. Hypoxylon, Xylaria. (Pf. I, i, 480.) 



Order Pyrenolichenes. Lichen-forming fungi allied to the 

 preceding families, with which they may eventually be merged. 

 Perithecia spherical or hemispherical, weak, with an apical pore 

 or fissure. 



Family 23. Moriolaceae. Crustaceous lichens, with Cystococ- 

 cus gonidia, which are enclosed in capsular colonies. Moriola. 

 (Pf. I, I*, 52.) 



Family 24. Epigloeaceae. Gelatinous lichens with Palmella 

 gonidia; perithecia spherical, erect. Epigloea. (Pf. I, i*, 53.) 



Family 25. Verrucariaceae. Crustaceous lichens with Plcu- 

 rococcus or Palmella gonidia ; perithecia erect, single. Verru- 

 caria, Thelidhmi. (Pf. I, i*, 53.) 



Family 26. Dermatocarpaceae. Foliaceous or somewhat crus- 

 taceous lichens, with Palmella gonidia ; perithecia erect, single, 

 with minute ostiole. Dermatocarpon, Endocarpon. (Pf. I, i*, 



58.) 



Family 27. Pyrenothamniaceae. Fruticose, branching lichens, 

 with Pleurococcus gonidia ; perithecia erect, single. Pyrenofham- 

 nia. (Pf. I, I*, 61.) 



Family 28. Pyrenulaceae. Crustaceous lichens wath Chroo- 

 lepus gonidia; perithecia erect, single, or clustered. Microthelia, 

 Arthropyrenia, Porinia, Pyrcnnla. (Pf. I, i*, 62.) 



Family 29. Phyllopyreniaceae. Foliaceous lichens with Chroo- 

 lepics gonidia; perithecia single, sunken. Lepolichen. (Pf. T, i*, 

 68.) 



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