534 



RESEARCHES ON FUNGI 



epidermis of the leaf. The hemispherical sorus was then turned 

 upside down and set on a thin layer of 10 per cent, gelatine spread 

 over the bottom of a compressor cell. The lid of the cell was then 



_L 



0^ 



OiTn-jn 



10 m-m. 



Fig. 214. — Puccinia Malvacearum. Distance of discharge of the basidio- 

 spores. In the centre is a hemispherical sorus of teleutospores, cut from 

 a leaf of a Hollyhock {Althaea rosea) and left resting on a layer of gelatine 

 in a compressor cell for 16 hours. The teleutospores germinated and the 

 basidiospores were shot away from the basidia in all directions. Drawn 

 with a camera lucid.a. The distance to which the spores have been shot 

 may be determined by reference to the scale. Magnification, 39. 



set in place, so that the sorus became enclosed in a small glass 

 chamber kept sufficiently moist by the gelatine. The cell was kept 

 during one night at room temperature. Next morning, it was found 

 that many of the teleutospores had germinated and that the basidia 

 produced by them had discharged their spores in large numbers. 



