63 ASCOMYCETES 



6. Disc elongate with a thick rim. Tryblidiella. 

 Disc roundish with a thin rim ; spores 2 -celled. Pseudotryblidium. 

 Disc roundish with an involute rim ; spores 4-celled. Rhytidopeziza. 



7. Spores 8, not sprouting in the ascus. Dermatea. 

 Spores sprouting in the asci which become filled with small conidia. 



Tympanis. 



8. Ascocarps sessile or stalked with smooth, saucer-shaped disc. 9. 

 Ascocarps Avith convolute, tremellifonn discs. 12. 



9. Spores I -celled, round. PuLPARiA. 

 Spores i-celled, elongate. lo. 

 Spores 2-celled. 1 1. 

 Spores filiform. Holwaya. 

 Spores muriform. Sarcomyces. 



10. Ascocarps soft, gelatinous inside, sessile, thin. Bulgariella. 

 Ascocarps soft, gelatinous, stalked, thick. Bulgaria. 

 Ascocarps water}- gelatinous. Sarcosoma. 



11. Spores unequally 2-celled, rounded at the ends (parasitic on algae 



growing on brj-ophytes ) . Paryphedria. 



Spores elongate, acute at the ends (growing on wood). SOROKINA. 



12. Spores l-celled, hyaline. Haematomyces. 

 Spores murifomi, blackish. Haematomyxa. 



Species of Bulga^'ia are common on oak and chestnut forming 

 top-shaped masses which are soft gelatinous when wet but shrivel 

 into hard dry shapeless knobs. A species of Det'inatea is com- 

 mon on stems of Abius breaking out from underneath the bark. 

 Some of the gelatinous species bear a superficial resemblance to 

 certain of the true tremellines (Tremellales) but can be readily dis- 

 tinguished by the spores in asci. 



LITERATURE. 



Saccardo. Sylloge Fungorum, 8 : 53-646, 768-811 ; 10 : 3-44, 

 52-67 ; II : 393-427, 433-435- 



Lindau. Die natiirlichen Pflanzenfamilien, ii : 173-273. 



Rehm. Rabenhorst's Kryptogamen Flora Deutschlands, u. s. 

 w. i3 : 191-1134, 



Cooke. Mycographia. PL 1-113. London, 1879. 

 Gillet. Les Champignons. Discomycetes. PL 1-102. Alencon, 

 1879 ; Suites. PL 1-33. 1890. 



