6o 



ASCOMYCETES 



lO. 



II. 



Spores remaining one- celled. 

 Spores becoming 2-celled. 

 Spores elongate-fusiform, 4- cc-celled. 

 Spores filiform, cx-celled. 



Spores spherical. 

 Spores elongate 



Spores remaining one-celled. 

 Spores finally 2-4-celled. 



10. 



NiPTERA. 



Belonidium. 

 Belonopsis. 



mollisiella. 

 jsiollisia. 



Orbilia. 

 Calloria, 



Family 6. Celidiaceae. 



This family contains a few inconspicuous genera mostly growing 

 on lichens, rarely on wood or bark. Tho several of the genera 

 have not yet been reported from North America, a synopsis is here 

 given since any of them are likely to be found here. 



1. Spores one-celled. 

 Spores 2-celled. 



Spores 4-6-celled ; growing on lichens. 



2. Growing on wood or bark. 

 Growing on lichens. 



3. Growing on wood or bark. 

 Growing on lichens. 



2. 



J- 



Celidium. 



Agyrium. 

 Phacopsis. 



Lecideopsis. 



CONIDA. 



Family 7. Patellariaceae, 



\Valls of the ascoma thin ; hypothecium only slightly developed. 2 

 Walls of ascoma thickened ; hypothecimn well developed. 3 



Spores hyaline, i-celled or at maturity, sometimes 2 celled. Patellea 

 Spores hyaline, 4-6-celled. ' Durella 



Spores brown, 2-celled. Caldesia 



Asci 8-spored. 4 



Asci i6-spored ; spores 2-celled. Ravenelula 



Asci many-spored. 14 



Spores remaining I -celled at maturity. 5 



Spores becoming 2-celled at maturity. 7 



Spores elongate, needle-shaped or filiform, 4-many-celled. 1 1 



Paraphyses not broadened above, wavy. Starbaeckia 



Paraphyses enlarged upwards ( clavate ) . 6 



Ascocarps superficial from the beginning (saprophytic). Patinella 

 Ascocarps immersed at first, then erumpent (parasitic). Nesolechia, 



