ON GENTIANA 



179 



Fig. 128. P. Gentianae. Teleutospore, 

 mesospore, and medospore, on G. 

 acaulis. 



aculeolate, brownish-yellow, 20 — 30 x 18 — 24 /x, with two, 

 rarely three, germ-pores. 



Teleutospores. Sori similar and also on the stems, but 

 pulverulent and black-brown ; 

 spores ellipsoid to ovoid, 

 rounded at both ends, not 

 thickened above, but some- 

 times with a low broad papilla, 

 not constricted, smooth, dark- 

 chestnut, 28—38 x 24—30 p ; 

 pedicels hyaline, thin, rather 

 long, very deciduous ; occa- 

 sionally there are a few mesospores intermixed. 



On Gentiana acaulis. Uredo- and teleutospores, Kew 

 Gardens, August, 1905 (M. C. Cooke), and Horsham (W. G. 

 Smith). (Fig. 128.) 



I have a specimen on 67. Andrewsii, from the United States, with 

 exactly similar teleutospores. The aecidia are said to appear in April and 

 June, and more frequently on the stems and peduncles than on the leaves. 

 Jaczewski's JEcidium was on calyx, stem and leaf of 67. angustifolia, on 

 pale orange spots. 



Distribution : Europe, Siberia, East Indies, North 

 America. 



51. Puccinia Primulae Duby. 



JEcidium Primulae DC. Flor. fr. vi. 90. Gooke, Handb. p. 544 ; 



Micr. Fung. p. 199. 

 Uredo Primulae DC. Flor. fr. vi. 68. 

 Trichobasis Primulae Cooke, Micr. Fung. p. 227. 

 Puccinia Primulae Duby, Bot. Call. ii. 891. Cooke, Handb. p. 495 ; 



Micr. Fung. p. 204. Plowr. Ured. p. 159. Sacc. Syll. vii. 



612. Sydow, Monogr. i. 348. Fischer, Ured. Schweiz, p. 161, 



f. 124. 



sEcidiosjjores. iEcidia hypophyllous, on yellowish spots, 

 densely but irregularly clustered in roundish groups, shortly 

 cylindrical, with a broad much cut revolute white margin ; 

 spores verruculose, orange, 17 — 23x12 — 18 fx. 



12—2 



