304 



INTRODUCTION TO CRYPTOGAMIC BOTANY. 



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1. Sepedoniei, Fr. — Fertile threads scarcely distinct 



from the mycelium. Spores very 

 abundant. 



2. Mucedines, Fr. — Fertile threads very distinct, 



mostly white or coloured. Spores 

 mostly simple, scattered or collected 

 in heads. 



3. Dematiei, Fr. — Fertile threads dark, carbonised. 



Spores often compound and cellular. 





Em 



4. Stilhacei, Berk. — Stem or stroma compound. 



Mass of spores moist, diffluent. 



5. Isariacei, Cda. — Stem or stroma compound. 



Spores dry, volatile. 



1. Sepedoniei, Fr. 



Mycelium predominant. Spores either arising immediately 

 from the mycelium, or from very short fertile threads, some- 

 times small, but large in the more typical species. 



324. These Fungi consist, for the most part, of species in 

 which the spores are highly developed, whUe the fertile threads 

 are much reduced. The more typical are constantly parasitic on 

 the larger Fungi, as Agarics, Helvelke, and Peeizce, while others 

 affect decaying fruits ; the less typical, if all are really allied, 

 occur on various substances. Nothing is more common than 

 to meet with decaying Boleti in woods, white with mycelium, 

 but within yellow, from the multitude ^of globose echinulate 

 spores, which form the greater part of the mass of Sepedonium, 

 TnycopMlum. Helvella leuco'phcea is often covered with a 

 rose-coloured bloom, consisting of the large and curious sj)ores 

 of Mycogone rosea; a brownish powder, with differently 

 shaped spores, affects a Peziza, Mycogone cervina; while 

 another, Sepedonioid (Asterophora Pezizce), with curious 



