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MILDEWS, RUSTS AND SMUTS 
SILENE 
Puccinia silenes, Schroet.; Plowr., Urcd., p. 147. 
Pycnidia. Arranged in small, honey-coloured clusters. 
Aecidia. In small circular clusters, on pale spots on 
the under surface of the leaf, shortly cylindrical, whitish, 
edge torn ; spores subglobose or polygonal, very delicately 
warted, orange, 18—30 X 16—21 p. 
Uredospores. Sori scattered or in circular groups, some¬ 
times growing into each other, minute, cinnamon-brown, 
on both sides of the leaf ; spores subglobose or elliptical, 
echinulate, pale brown, 25—30 x 20^—25 p. 
Teleutospores. Sori minute, powdery, blackish-brown, 
scattered, or sometimes in groups, on both surfaces of the 
leaf ; spores elliptical or oblong, ends rounded, tip slightly 
thickened, very slightly constricted at the septum, smooth, 
chestnut-brown, 25—^40 X 18^—26 p, pedicel short, colour¬ 
less. 
S3m. Uredo behenis, D.C. 
Puccinia lychnidearum, Fuckel. 
Aecidium behenis, D.C. 
On leaves and stem of Silene inflata and S. nutans. 
Britain and Europe generally. 
SPERGULA 
Puccinia spergulae, D.C. 
Teleutospores. Sori on the under surface of the leaves, 
or on the stem, scattered or clustered, convex, circular or 
elongated, reddish-brown, then blackish ; spores spindle- 
shaped or club-shaped, tip rather pointed or roundish, much 
thickened,- slightly constricted at the septum, narrowed 
towards the base, smooth, pale brown, 36—60 x 15—20 p, 
pedicel colourless, persistent. 
Syn. Puccinia arenaria, Plowr.; Ured., p. 210 ( in part). 
Puccinia caryophyliarum, var. spergulae, West. 
On leaves, leafstalks, and stem of Spergula arvensis and 
Spergularia rubra. Britain and Europe generally. 
POLYGONACEAE 
OXYRIA 
Puccinia oxyriae, Eckl.; Plowr., Ured., p. 194. 
Uredospores. Sori scattered or in minute clusters 
circular or irregular in form, surrounded by the split 
epidermis, cinnamon, on minute purplish spots on both 
sides of the leaf, most abundant on the upper surface ; 
