124 



DISCOMYCETES 



[CH. 



rs of the Vaccinieae, where the sclerotia are formed on the fruits 

 i" the conidia are produced in chains and are separated by small 

 cellulose disjunctors. They have a characteristic smell of almonds and 

 are tried o the flower by insects, and probably also by wmd ; they 

 "rmTnate to form septate hyphae which enter and fill the ovary. The 



Fig. 86. Sderotinia tuberosa (Hedw.) Fuck.; sclerotia and apothecia, nat. size. 



mummified berries fall prematurely, lie during winter on the earth, and in 

 spring give rise to the goblet shaped apothecia. In other species the conidia 

 are borne on a conidiophore and belong to the form-genus Botrytis ; the 

 conidial phase on Primus and Pyrus is known as Monilia. The ascospores 

 are unicellular and hyaline and often of unequal size. 



Celidiaceae, Patellariaceae, and Cenangiaceae 



In the previously described families the consistency of the ascocarp is 

 either fleshy or waxy. In the following three, Celidiaceae, Patellariaceae, 

 and Cenangiaceae, it is leathery, horny, or cartilaginous, and the ends of the 

 paraphyses are interwoven to form a layer above the asci known as the 

 epithecium. The hypothecium is well developed, the ascospores are some- 

 times more than eight in number and are one to many-celled; in some 

 species pycnidia are present. The three families are sometimes grouped 

 together as Dermateaceae. 



