:596 UREDINEAE. 



Jun. virginicnw, and Jan. 2}hoenicea. (A reported occurrence on 

 Finns hakpnisis is probably an error.) 



The sporogenous cushions are little dark-lnown protuberances 

 which lircak fortli in sjirinp: from swellings, or on L;reen 



Fig. 2^il—Gi/iiinos/>orunpium xnbinae on twigs of Junipirux Sidjimi, at the time 

 nf lilicnitiou of spores, (v. Tubeuf i>hot.) 



twigs and scale- leaves. These bodies absorb water, swell, and 

 run together, forming transparent gelatinous masses (Figs. 230 

 and 231). The teleutospores resemble those of G. junipcrinum, 

 but liave only four germ-pores ; they germinate on the 

 gelatinous masses, and produce promycelia and sporidia. The 

 latter germinate at once, chiefly on leaves of Pyrus com- 

 munis. The pycnidia are produced on the upper epidermis 

 as sticky yellow spots bearing darker dot-like pycnidia. The 

 aecidia {llocstelia canccllata) are found in September on the 

 under-surface of the leaves of pear, also on leaf-petioles, young 

 shoots, and even on the fruits. The peridia differ from both 



