1891.] A.Barclay — Additional 'Uredineae from Simla. 225 



regions. In support of the view of identity are the manner of dehiscence 

 of the peridium, and the closely corresponding sizes of the aecidiospores 

 and the peridial cells (the former in the case of G. Ounninghamiann,m 

 being on an average 28-6 x24i'6)W, and the latter 70 X 22;u,). I should 

 note also that the peridial tubes of the aecidium on Gotoneaster are 

 somewhat longer than those on Pyrus (in the latter they are 1 to 2 mm ) 

 The only Aecidium known on Gotoneaster is Aec. Mespili, D. 0. ; 

 but the aecidiospores of this species are 24 — 19/x. in diameter, and I 

 do not think the Simla species can be the same. Until more is known 

 of its .life history I propose naming it Aec. Gunninglamiammi, believing 

 that it will probably prove to be identical with Gymnosporangium Gun- 

 ningJiamianum, mihi. 



Aecidium Mori, n. s. 



On Ficus palmata, Forsk. 



I found this plant first attacked in a valley to the north of Mashobra, 

 and subsequently in Simla itself during October. The leaves are often 

 densely covered with an orange red eruption. In some cases the whole 

 of the lower leaf surface was a mass of these bright pustules. But 

 although the eruption is mainly hypophyllous it is also largely epiphyl- 

 lous. With a field lens it is difficult to determine the nature of the 

 fungus. Each spore heap is very minute, but shreds of white tissue 

 are seen about them. Under the microscope however, all doubt ceases, 

 for there are very characteristic peridial cells, and the fungus is con- 

 sequently an Aecidium. But it is a very remarkable one in having so 

 small and inconspicuous a peridium. To the naked eye the fungus 

 resembles a Uredo form. The spore beds are scattered irregularly all 

 over the leaf surface ; but sometimes on somewhat swollen weals on the 

 petiole and midrib. The aecidiospores are very brilliant orange red 

 bodies, round to oval, and apparently smooth on the surface. When 

 just wetted they measure 17 — 14 X 16 - 14/a. The peridial cells are 

 colourless and more delicate than usual. They are mostly six-sided 

 and spiny or tuberculated. They measure 22 x 18 — 19//,. I placed 

 some of the aecidiospores in water on the 17th of October, and a few 

 were found to have germinated on the following day. The germ tube 

 is long, simple, and unbranched. 



Saccardo mentions a Puccinia sepulta, B. et C. on the leaves of a 

 species of Ficits from Nicaragua and two Uredo forms (Z7. Fici, Cast, and 

 TJ.ficicola, Speg.) ; but even supposing these Uredo forms are really J.ecic^(,'a, 

 the spores of the former are much too large, and those of the latter 

 considerably larger than the Simla fungus to permit of their being 

 considered identical. The Simla species is probably therefore new. 



