igo MILDEWS, RUSTS AND SMUTS . 
Ustilago bromivora, Fischer de Waldh.) Plowr., Ured., 
p. 278. 
Produced in the unexpanded inflorescence, forming lumps 
which burst and become powdery, blackish-brown ; spores 
globose, elliptical, or ovate, dusky brown, almost smooth, 
or indistinctly granular, 8—14 X 6—10 [jl, promycelium 
cylindric spindle-shaped, mostly i-septate, soon disap¬ 
pearing, promycelium spores both terminal and lateral, 
spindle-shaped. 
Syn. Ustilago carbo, var. vulgaris, d. bromivora, Tub 
On Bromus mollis, B. secalinus, B. madritensis, B. 
uniloides. Germany and S. America. 
Ustilago cardui, Fischer ; V\ov^v.,Ured.,^. 282. 
Spores produced in the inflorescence, soon becoming 
powdery, dusky brownish-violet ; spores globose or ellip¬ 
tical, brownish-violet, pale brown when old, wall covered 
with a rather large-meshed network, 15—20 x ii—15 p. 
Syn. Ustilago russiana, Kuhn. 
Produced in the ovaries of Carduus acanihoides and C. 
nutans. Germany. 
Ustilago tragopogi, Schroet. ; Plowr., Ured., p. 281. 
Sori produced in the inflorescence, blackish-violet, at 
first concealed by the involucral scales ; spores generally 
irregularly globose, sometimes broadly elliptical, wall 
dusky-violet, covered with a small-meshed network, 13 — 
X 10^—15 p, ; promycelium cylindrical, 3-septate, 
promycelium spores elliptic-oblong, borne at the septa. 
Syn. Uredo tragopogonis, Roehl. 
Uredo receptaculorum, D.C. 
Ustilago purpurea, Bon. 
On Tragopogon pratensis. 
The whole of the inflorescence is destroyed, and the 
involucre remains closed. Europe generally. 
Ustilago violacea, Fuckel; Plowr., Ured., p. 280. 
Sori produced in the anthers, rarely in the ovary, pale or 
dusky violet, soon powdery; spores globose or shortly 
elliptical, pale violet, wall with a very small-meshed net¬ 
work, 6—9 p : promycelium spindle-shkped, i—3-septate, 
promycelium spores produced singly at the septa or at the 
tip, elliptical. 
Syn. Uredo violacea, Pers. 
Farinaria stellariae. Sow 
Ustilago antherartim, Fr. 
Uredo anther arum, D.C. 
Caeoma violaceum. Mart. 
