NET 
Fic. 2.—pPvuccrNIA GRAMINIS. 
CBP. ad natdel i i 
Owe2s. S* 
a, Mass of teleutospores springing from the mycelium and rupturing the epidermis; 4, Four 
teleutospores ; c, Germinating teleutospores bearing a promycelium and spores; @, Promy- 
celium spores; e, Promycelium spores germinating in water ;_/, Three promycelium spores 
which have germinated upon the skin of a Barberry leaf. Their germ-tubes have bored 
their way through the epidermal cells, and have begun to form mycellum (24—48 hours).— 
After De Bary. 
From an electrotype supplied by “‘ The Gardeners’ Chronicle."’ 
