352 A. Barclay — List of the Uredmeae occurring [No. 3, 



I.— ^CIDIAL FORMS. 

 1. — ^^ciDiUM Saniculj], sp. nov. 

 Sanicula (Europaea, L. P) 

 The earliest ^cidium which I have observed in Simla is that 

 which occurs on Smiicula Europcea. Towards the latter end of March, 

 some of the earliest leaves of this plant which are being unfolded in 

 spring may be found attacked by this parasite. It is by no means an 

 uncommon fungus. The invaded areas of the leaf are usually small, 

 and generally convex below, where the aecidial cups are usually borne, 

 though a few may open also on the upper surface of the leaf. The 

 nscidia discharge their spores through a porous like opening at their 

 summits, i. e., the peridium does not open widely as in most cases with the 

 fragments of the torn tissue forming a stellate opening. The petioles 

 are also frequently attacked and at such places they are thickened and 

 often bent. A single leaf blade may present from one to three patches 

 of invasion, these patches being slightly paled in colour as seen from 

 the upper surface. 



jEcidiospores. — The moistened aecidiospores measure on an average 

 25'4 X 19*4 fjL, the measurements exhibiting extremes of 26 fx in length 

 and 20 /a in breadth. The epispore is finely punctated and contains 

 from two to three germ pores. The endospore is very fine and not 

 readily distinguishable from the epispore (Fig. 1, PI. XII.). The spores, 

 when placed in water under suitable circumstances, readily germinate, 

 throwing out long curved tubes measuring 6 to 7 /x in diameter. Only 

 one germinal tube is produced by each spore. The peridial cells mea- 

 sure about 30 X 22 /x (Fig. 2, PL XII.). 



llemarhs. — This secidium is, I believe, a new species ; but may be com- 

 pared with that which I have described below on Fimpinella diversifolia. 



2. — Uromyces Valeriana, Schum ? 



Valeriana Wallichii, D. C. 

 Next to the foregoing ^cidium one on this plant is among the 

 earliest of these parasites to be found in spring. Towards the end of 

 March, some plants may be found in initial stages of attack ; but it is 

 towards the latter part of April that it is seen in its fullest develop- 

 ment. This ^cidium is one of the most common and abundant in 

 Simla, and individual plants are often so extensively affected in blade 

 and petiole as to be completely destroyed. The affection is usually 

 confined to the blades and petioles of the radical leaves, but may 

 also be found on the upper leaves of the flowering stalks and even, 

 though rarely, on the bracts of the flower heads. When a leaf is ex- 

 tensively affected, it is considerably distorted, and the parts actually 



