326 USTILAGINEAE. 



The sporocarps consist of a two-layered peridium, a sporogenous 

 layer, and tufts of sterile hyphae. The outer layer of the 

 peridium forms the outer layer of the black protuberances on 

 the leaves ; the inner layer is delicate. The sporogenous hyphae 

 originate from the centre of the underlying hyphal tissue, and 

 form a palisade-like layer in the bottom of the sporocarp cavity, 

 the remaining space being filled with spores and tufts of barren 

 hyphae. These latter hyphae rise amongst the sporogenous 

 ones, and project as a fine brush-like tuft out of the ruptured 

 peridium. The sporogenous hyphae grow vertically upwards, 

 and become septate, forming chains of loosely united, roundish, 

 hyaline cells or joints. The terminal joints give off several 

 spherical cells laterally, and die away, leaving the cells loose 

 in the sporocarp cavity. From division of the spherical cells 

 yellow spores result, and, on rupture of the peridium, are 

 carried out on the tufts of sterile hyphae to be scattered by 

 wind. The spores germinate in water, and produce either a 

 promycelium or conidia. 



Gr. congesta Berk, et Eav. occurs on leaves of Chamcrops 

 Palmetto,. 



Schinzia (Entorrhiza). 1 



Spores produced on the ends of lateral branches of a mycelium 

 in the cortical cells of the root of the host-plant. Germina- 

 tion results in production of a simple or branched sporophore 

 (promycelium), from which kidney-shaped conidia (sporidia) are 

 produced. 



Schinzia cypericola Magn. This causes deformation of the 

 roots of Ci/j>/'rti.s flavescens (Fig. 179). 



Sch. Aschersoniana Magn. causes swellings on the roots of Juncus 

 bufuni/'s [Britain]. 



Sch. Casparyana Magn. In roots of Juncus Tenac/ei". 



Sch. digitata Lagerh. In roots of Juncus articulatus. 



Sch. (Naegelia) cellulicola Naeg. In roots of Iris in Switzerland. 



Sch. (Entorrhiza) solani Faut. 2 [This is given as the cause of a disease 

 on potato. The plants droop and ultimately rot at the neck, the leaves 

 become yellow, and neither flowers nor tubers are produced.] (Edit.) 



1 P. Magnus, at Botun. Vereiii <1. Prov. Brandenburg, 1878; " Ueber einige 

 Arten d. Gattung Schinzia," Ber. d. <1> ///*</<. I l0 t<ui. (,'es., 1888, p. 100; C. Weber, 

 Botait. Zeitunri, 1884. 



- Kautrey, Revue mycolo;/., 18!H>, p. 11. 



