46 



PLASMODIOPHORALES 



PLATE 6— Continued 



Sorosphaera Veronicae 



Fig. 52-57. Variations of the cvstosori of iS. Veronicae. 

 Palm and Burk, "33. 



Fig. 53. Typical hollow Sorfinphaera-tike cvstosori with 

 smooth and verrucosa spores. 



Fig. 54. Flattened Sorodhcus-lihe cystosorus. 



Fig. 55. Spongy Span gospora-Whe cystosorus. 



Fig. 56. Loose, spongy Clathrnsonix-hke cystosorus. 



Fig. 57. Irregular LU/nierri- and globular Sorosphaera- 

 like cvstosori. 



Smith, A. L., and J. Ramsbottom. 1917. Trans. Brit. Mycol. 



Soc. ti: 231. 

 Spescbnew, X. X. 1907. Die Pilzparasiten des Teestrauches, 



p. -22. Berlin. 

 Trotter, A. 1904. Ann. Mycol. 2: 536. 



. 1916. Marcellia 15: 58. 



Webb, P. C. R. 1935. Ann. Bot. 49: 41. 

 Winge, O. 1913. Ark. f. Bot. 12, no. 9: 4. 



ADDITIONAL BIBLIOGRAPHY: SOROSPHAERA 



Blomficld, J. E., and E. J. Schwartz. 1910. Ann. Bot. 24: 35. 

 Diedicke, H. 1911. Mitt. Thiir. bot. Ver. n. f. 28: 83. 

 Donald, L. 1934. Phytopath. 24: 843. 



Ducomet, V. 1909. Ann. I'eeole X'at. d'Agric. Rennes 2: 1. 

 Grevillius, A. Y. 1913. Abh. Ver. Nat. Erfors. Niederrheins 



1: 165. 

 Henning, P. 1891. Schrift. Xat. Ver. Schleswig-Holstein 9: 



235. 

 Ledingham, G. A. 1939. Canadian Jour. Res. C 17: 43. 

 Maire, R. 1909. Ann. Mycol. 7: 226. 



. 1910. Bull. Soc. Linn. Xormandie 6 ser. 2: 57. 



. 1911. Ann. Mycol. 9: 226. 



, and A. Tison.1908. C. R. Acad. Sci. Paris 147: 1410. 



Palm, B. T. 1908. Svensk. Bot. Tids. 2: 48. 



, and M. Burk. 1933. Arch. Protistk. 79: 263. 



Rostrup, E. 1894. Bot. Tidsskr. 19: 201. 

 Schwartz, E. J. 1914. Ann. Bot. 28: 229. 



SORODISCUS 



Lagerheini and Winge, 1913. Ark. f. Bot. 12: 23 



(plates 7, 8) 



Cvstosori usually flat, oval, disc-shaped and com- 

 posed of two layers of spores pressed closely to- 

 gether ; often variable in size and shape, rarely hol- 

 low spheres, occasionally an elongate and irregular 

 linear series of spores or reduced to tetrads, triads, 

 diads and rarely monads ; soral membrane doubtful 

 or lacking. Resting sjiores polygonal, angular and 

 urn-shaped or oval and almost hemispherical with 

 hyaline smooth or spiny outer walls ; apical collar 

 and cap present or lacking; remaining attached to- 

 gether or separating at maturity; producing one or 



