196 
MILDEWS, RUSTS AND SMUTS 
spores irregularly globose, or broadly elliptical, clear brown, 
20—27 [ji, border about 3 [x wide, not much paler, epispore 
covered with a small meshed network, mesh averaging 
1.5—-2.5 p in diameter, 
Syn. Tilletia decij.iens, Wint, ; Plowr., Ured., p. 284. 
Tilletia secalis, Kuhn. 
Uredo secalis, Corda. 
On rye— Secale cereale, Agrostis vulgaris, A. alba, Apera 
spica-venti. Agrostis pumila,L., is only A. vulgaris dwarfed 
by the Tilletia. 
Distinguished from Tilletia caries by the wider border 
of the spore, and the smaller meshes of the network. 
France, Germany, Switzerland, Russia. 
B. Spore-mass formed on the leaves or culm. 
Tilletia berkeleyi, Mass. 
Spore-mass forming blackish streaks up to half-an-inch 
long, on the culm, not foetid when moistened ; spores con¬ 
stantly globose, brown, 15—18 p, border i p wide, epispore 
with a very delicate, small-meshed network, mesh averaging 
1.5 p across. 
On wheat— Triticum vulgare. 
Differs from all species in the small size of the spores ,and 
in the very delicate, small-meshed network on the epispore. 
Tilletia debaryana, Fischer de Waldh. 
Spore-mass blackish-brown, forming long streaks on the 
leaves of the host-plant ; spores subglobose or broadly 
elliptical, brown, wall densely covered with minute, dark- 
topped warts formed by the breaking up of the epispore, 
10—18 p. 
Syn. Tilletia striaeformis, Wint. ; Plowr., Ured., p. 284. 
Tilletia serpens, Karst. 
Tilletia hrizae, Ule. 
Uredo striaeformis, Westend. 
Parasitic on many different grasses —Briza media, 
Anthoxanthum odoratum, Lolium perenne, Br achy podium 
pinnatum, Agrostis alba, A. vulgaris, Arrhenather^im avena- 
ceum, Bromus inermis, Dactylis glomerata, Festuca elatior, 
F. ovina, Holcus lanatus, H. mollis. Milium effusum, 
Phleum pratense, Agropyrum repens, Alopecurus pratensis, 
etc. 
Europe, except Russia and the Mediterranean region, 
United States. 
ENTYLOMA, De Bary 
Mycelium intercellular, not becoming gelatinised ; spores 
produced singly, terminal or interstitial, often produced in 
