248 Journal of the Asiatic Society of Bengal. [{N.S., XIV, 
quite absent during the first part. Sori °3—-‘7 x °25—-58 mm. 
Pustules contain black and shining granular contents. Figs. 5 and 
12). Even the flowering shoots, though not very commonly 
produced by diseased plants, bear uredo and teleuto sori upon 
their axes, peduncles, etc. 
In the aecidial stage of the fungus, the host presents a 
totally different form and colour, the shoots being invariably 
erect. Sometimes a tuft of vertical leaves arises from the top 0 
a short aerial stem. More often the axis is elongated and 
branched, with long internodes and cauline leaves bearing aeci 
dia (Fig. 3). The aecidial shoots usually spring up from the 
midst of a rosette of withered leaves with uredo and teleuto 
* . 
beginning. In most cases the rootstock gives rise to a few 
rise, in the flowering season though not quite often, to axillary 
slender shoots covered with aecidia and bearing very smé 
aecidial leaves. These shoots bear small globular and malformed 
B). 
view is supported by the fact that the aecidial shoots also give 
are pale green or yellow in colour with or without a pinki h 
violet tinge.  Aecidia Cups °35-"5x-3—"45 mm. on bot 
mn cold weather, germ tubes two or more with yellow gone 
and vacuolar contents (Fig. 13). 
_The leaves of the aecidial shoots bear pyenidia (sperm? 
gonia) as well scattered on both surfaces, The pycnidia as 4 
rule appear before the aecidia and are therefore found in greater 
b young leaves which are yet more or less P 
brownish dots. When examined with a pocket magnityine 
lens they appear as brown specks more or less raised above th? 
leaf surface. They are subclobo: ‘114 x*1- "12 ee 
Pycnospores (spermatia) elliptical, colourless, 3u in lengt 
(Figs. 14-and 10). ie 
he Passing on to the vegetative characters of the fungus ie 
ave to note that its mycelium is intercellular though ee 
exclusively. Haustoria are more or less lobed. In the ™ 2 
and teleuto stages the mycelium is localized at places belo 
