178 PUCCINIA 
epidermis, and consisting of a floor of crowded erect narrow brownish 
hyphe, each of which abstricts from its apex a small, smooth, round, 
thick-walled, nearly colourless spore, 8—10y diam. Plowright describes 
and figures these spores as forming basipetal chains, but this I could not 
see. The sori are numerous, about 1mm, diam. and dark-brown with a 
greyish bloom, due apparently to the overlying spores. Can they be a 
parasitic fungus like Darluca Filum, which has itself occasionally been 
considered as an additional spore-form of the Uredine on which it preyed ? 
The plants affected by the mycelium of the spermogones are permeated 
by it; they grow taller and more erect, the internodes are longer, the 
leaves paler, shorter, and thicker. Plowright considered this mycelium to 
be perennial, which is very probable. The spermogones have a distinct, 
but faint odour. 
The sculpture of the teleutospores is very striking and almost unique. 
According to Sydow, it consists of a network of warts, but, in the British 
specimens which I have seen, it would be more correctly described as a 
series of pits arranged more or less in longitudinal lines (about 12 across 
_ thespore). Fischer represents the network as much finer. As is frequently 
the case, these markings can only be seen properly on the dry spore ; they 
vanish almost completely when it is placed in water, unless it is emptied 
of its contents. The germ-pore of the lower cell is placed near the insertion 
of the pedicel, a very unusual position ; it is covered with a pale papilla 
like the upper one. 
DisTRIBUTION: Central and South-western Europe. 
50. Puccinia Gentiane Link. 
Medium Gentianae Jacz. Champ. Mont. p. 163 (1892), but ? 
Oredo Gentianae Strauss in Wetter, Annal.'ii, 102 (1811). 
Puceinia Gentianae Link, Spec. ii. 73. W. G. Smith, Gard. Chron. 
xxlv. (1885) p. 372, f. 82. Cooke, Grevillea, xiv. 39. Plowr. Ured. 
p. 147. Sace. Syll. vii. 604. Sydow, Monogr. i. 340. Fischer, 
Ured. Schweiz, p. 164, f. 126. 
[Spermogones. Honey-coloured, in small clusters. 
dicidiospores. Aicidia hypophyllous or on the stems, on 
circular brown spots, in irregular clusters, cup-shaped, with torn 
white margin; spores delicately verruculose, orange, 16—23 x 
1417 yp] 
Uredospores. Sori amphigenous, but oftener on the upper 
surface, scattered or circinate, minute, roundish, at first covered 
by the epidermis, pale-chestnut; spores globose to ovoid, 
