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paie brown, with rather large, distant, subglobose warts, 
Syn. Tilletia striiformis, Plowr., Ured.,p. 284. 
On leaves of a grass. 
This species has been referred to Tilletia striiformis, 
Magnus, but an examination of Berkeley’s type, in the Kew 
Herbarium, shows that the two are quite distinct. The 
true position can only be determined when the fungus is 
met with again, and the germination of the spores observed. 
Ustilago hypodytes, Fries ; Plowr., Ured., p. 273. 
Forming narrow, black, parallel streaks on the culm, 
at first concealed by the leaf-sheaths, soon forming a black¬ 
ish-olive, powdery mass ; spores angularly globose or 
elongated, wall smooth, yellowish olive-brown, 3—6 p, 
some few often much larger. 
Syn. Uredo hypodytes, Desm. 
Ustilago lygei, Rabenh. 
On Glyceria fluitans, Agropyrum repens, Triticum jnn- 
ceum, Avena flavescens, Elymus arenarius, Bromus erectus, 
Phragmites communis, Psamma arenaria, Stipa pennata. 
Europe generally, N. Africa and N, America. 
Ustilago grammica, Berk, and Broome ; Plowr., Ured., 
P- 275 - . 
Forming bands at equal distances, on the culm, the bands 
are formed of rather closely packed parallel streaks en¬ 
circling the culm, 2—3 lines in length ; spores subglobose, 
smooth, pale brown, 2.5—3 p. 
On Glyceria fluitans, G. aquatica and Aira caespitosa. 
Remarkable for its habit of growing in encircling zones, 
composed of blackish streaks, at equal intervals on the 
culm. 
Ustilago bistortarum, Korn. ; Plowr., Ured., p. 277. 
Sori on both sides of the leaf, scattered or gregarious, 
rather large, blackish-violet after bursting through the 
epidermis ; spores subglobose or elliptical, brownish- 
violet, 13—16 p, indistinctly granulated. 
Syn. Tilletia hullata, Fuckel. 
Ustilago hullata, Schroet. 
Gaeoma bistortarum. Link. 
On Polygomim historta and Rumex ohtusifolius. 
Germany, Austria, and Finland. 
A variety called var. glabra, Rostr., having smooth spores, 
12—13 p, occurs on leaves of Polygonum viviparum, in 
Finmark, which may be met with in this country. 
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