MILDEWS, RUSTS AND SMUTS 
191 
On Silene inf lata, S. maritima, S. mitans, Cerasthim vis- 
cosiini, Stellaria graminea, S. holostea, Lychnis flos-cnculi, 
L. diurna, L. vespertina, Dianthus deltoides, Saponaria 
officinalis. Europe generally and N. America. 
Ustilago major, Schroet. ; Plowr., Ured., p. 280. 
Spore-mass produced in the anthers, soon powdery and 
dusky violet ; spores globose or elliptic-oblong, wall violet, 
with a very fine-meshed network, 7—13 x 7—9 p. 
In anthers of Silene otites. 
Ustilago scabiosae, Winter. 
Mass of spores pale pink, becoming more or less violei 
colour, produced in the anthers, and at maturity covering 
the entire flower-head ; spores globose or rarely elliptical, 
pellucid, tinged brownish or dingy lilac, wall covered with a 
polygonal-meshed network, 8—10 p diam. ; promycelium 
cylindrical, generally 3-septate, promycelium spores ellipti¬ 
cal, borne singly at the septa, sometimes also at the tip. 
Syn. Farinaria scabiosae, Sow. 
Ustilago flosculorum, Fr. ; Plowr., Ured., p. 279. 
In anthers of Knautia arvensis, Scahiosa arvensis, S. 
snccisa, and 5 . columbaria. German};^, France, Switzer¬ 
land. 
Ustilago utriculosa, Tub ; Plowr., Ured., p. 280. 
Spores produced in the ovary and in the filaments of the 
stamens, dusky violet, soon powdery ; spores globose or 
elliptical, bright violet, brownish-violet when dry, v/all with 
a rather large, polygonal-meshed network, 9^—14 p ; promy¬ 
celium cylindrical, 3-septate, promycelium spores produced 
in pairs at the septa. 
Syn. Ustilago persicariae, Chr. 
Uredo utriculosa, Duby. 
In the ovary and filaments of Polygonum lapathifolium, P. 
persicaria, P. aviculare, P. convolvulus, and P. hydropiper. 
Europe generally, N. and S. America. 
Ustilago vinosa, Tub ; Plowr., Ured., p. 278. 
Produced in the ovary, filling the fruit with a blackish- 
violet powder ; spores irregularly globose, rarely oblong, 
pale violet, wall with rather large hemispherical warts, 
12 X 6 —10 p. 
Syn. Uredo vinoso, Berk, in Hit. 
Ustilago vinosa, Tub 
In the ovar}^ of Oxyria reniformis. Switzerland and 
Finland 
