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> Xntii 





Specimens ! 



e compact, very hard and covered with a superficial 

 black crust. In full grown plants the interior is divided into a number 

 of irregular cavities. The walls of these cavities are formed of a white 

 tissue which under the microscope is seen to consist of thick -wn Ik-. 1 

 hyphse which are stained by Bismark brown (fig. 2 b.). These hyphse 

 are from 4-8//. in diameter. The cavities soon become filled with a 

 gelatinous substance of a horny consistency in which some thin, hyaline, 

 flexuose hyphse are found buried. These are not colored by Bismark 

 brown. Some of these hyphse have ovoid swellings 5-8//. long near 

 their ends which contain 1, 2 or 3 ovoid bodies with very thin walls. 

 Each body contains a kind of nucleus. Later these swellings (fig. 2 a.), 

 especially those near the periphery of the gelatinous mass increase in 

 size and contain only one ovoid body. This is brown, verrucose, very 

 refringent, presenting all the characters of a spore and is regarded 

 as such by Bommer. Since he finds what he considers asci and 

 spores he refers Mylitta australis to the Tuberaceae. He describes the 



The asci (fig. 3) are analagous to 

 , being ovoid or spherical and 40-50//. in 

 j membrane is thin and encloses a single 



