POLYSTOMELLACEAE 



97 



c. Hymenia arranged irregularly 



(1) Ascoma attached at the center; spores 



2-celled, dark 



(a) Paraphyses present 



(b) Paraphyses lacking 



(2) Ascoma attached at several points, spores 



2-celled 



(a) Spores hyaline 



X. Paraphyses present 

 y. Paraphyses lacking 



(b) Spores dark 



X. Paraphyses present 

 (x) Free mycelium present 

 m. Hypostroma forming subcuticular 



bands 

 n. Hypostroma not' forming subcuticu- 

 lar bands 

 (y) Free mycelium lacking 

 y. Paraphyses lacking. 

 2. Hymenia rounded or discoid 



a. Ascoma attached at the center; spores 2-celled, 



dark 



(1) Hypostroma forming subcuticular bands 



(a) Free mycelium present 



X. Paraphyses present; mycelium with 

 straight setae 



y. Paraphyses lacking; setae twisted 



(b) Free mycelium lacking; paraphyses 



present 



(2) Hypostroma not forming bands 



(a) Ascoma setose, single 



(b) Ascoma glabrous, in a composite group 



b. Ascoma attached at several points 



(1) Free mycelium present; spores 2-celled 



(a) Spores hyaline; paraphyses present 



(b) Spores dark 



X. Paraphyses present 

 y. Paraphyses lacking 



(2) Free mycelium lacking 



(a) Hymenia beneath a common scutellum, 

 separated only by hyaline plecten- 

 chym; spores 2-celled, hyaline 



X. Paraphyses present 



y. Paraphyses lacking 



(b) Hymenia with separate 

 scutella 

 X. Spores 1-celled, hyaline; 



present 

 y. Spores 2-celled 

 (x) Spores hyaline 

 m. Paraphyses present 

 n. Paraphyses lacking 



Monorhiza 24:415, TS 408 

 Monorhizina 24:415, TS 409 



Cyclotheca 24:408, TS 409; 21 

 Lauterbachiella 24:405, TS 409 



Lembosiodothis 24:411, TS 409 



Macowaniella 



Hysterostomina 24:410, TS 409 

 Hysterostomella 24:409, TS 409 

 Subfamily Polystomelleae 



or divided 

 paraphyses 



Dothidasteris 24:411, TS 409; 



21 

 Scolionema 24:411, TS 410 



Dothidasteroma 24:411, TS 410 



Asterodothis 24:411, TS 410 

 Polyrhizum 24:412, TS 410 



Armatella 24:409, TS 410 



Hysterostoma 24:412, TS 411 

 Placasterella 24:412, TS 411 



Polystomella 9:1063, TS 411 

 Rhagadolobium 24:1264, 

 TS 411 



Microdothella 24:406, TS 412 



Synpeltis 24:409, TS 412 

 Leptodothis 24:409, TS 412 



