PHOMACEAE 



179 



B. Pycnidia with a subicle 



1. Pycnidia rostrate 



2. Pycnidia not rostrate 



a. Pycnidia hairy or setose 



(1) Hairs cruciately branched 



(2) Hairs or setae not branched 



(a) Ostiole present 



(b) Ostiole none 



b. Pycnidia glabrous 



(1) Conidia catenate 



(a) Rasidia present, filiform 



(b) Basidia none 



(2) Conidia not catenate 



(a) Pycnidia pedicellate 



(b) Pycnidia not pedicellate 

 X. Ostiole present 



(x) Basidia ramose 

 (y) Basidia simple 

 m. Subicle white 

 n. Subicle dark 

 (z) Basidia obsolete or unknown 

 y. Ostiole none 

 (x) Subicle radiate 

 (y) Subicle not radiate 

 m. Conidia of 2 kinds, fusoid and hamate 

 n. Conidia of one kind 

 (m) Pycnidia biogenous, folicole 

 r. Pycnidia folicole 

 s. Pycnidia fungicole 

 (n) Pycnidia saprogenous 



C. Pycnidia with a stroma 



1. Stroma innate or erumpent 

 a. Stroma valsoid or dothideoid 



(1) Stroma valsoid; basidia typically simple, 



sometimes ramose or obsolete 



(a) Pycnidia fungicole; conidia allantoid 



(b) Pycnidia not fungicole 



X. Conidia allantoid, expelled in cirrhi 

 y. Conidia globose to bacillar 

 (x) Conidia globose to ovoid, cirrhose 

 (y) Conidia oblong to bacillar 

 m. Stroma circumscissile, with a lid at 

 top; basidia filiform; conidia cir- 

 rhose 

 n. Stroma not circumscissile with a lid 

 (m) Conidia cirrhose; basidia obsolete 



or none 

 (n) Conidia not cirrhose; basidia fili- 

 form 



(2) Stroma dothideoid 



(a) Conidia c'liate 



(b) Conidia not cil'ate 



X. Stroma substipitate, with peridium which 

 persists as a cup about the margin 



Leptoxyphium 



Staurophoma 22:935, H 29 



Chaetasbolisia 

 Chaetophomella 



Sirosphaera 

 Sirosperma 



Podoxyphium 



Dothiorellina H 21 



Dasysticta H 22 



Dasystictella 



Asbolisia 



Asteroma 3:201, H 350 



Placophomopsis 



Chaetophoma 3:199, H 126 



Phomyces 



Lasiophoma 



Cryptosporiopsis 

 Cytospora 3:252, H 281; 49 

 Cytosporella 3:251, H 266 



Rabanhorstia 3:243, H 334; 49 



Ceuthospora 3:277, H 277 

 Fusicoccum 3:247 

 Diachorella H 247 



Bothrodiscus 22:950, H 332 



