46 THE JOURNAL OF BOTANY 



J-| mm. diam., gregarious, bursting at the summit. Resting- 

 spores broadly ellipsoid, smooth, 50-80 n diam., with a thick, 

 brittle, yellow- brown exospore and granular orange-brown contents. 



On radical leaves of Scabiosa Succisa, Leixlip Station, Co. 

 Kildare, and Magilligan, Co. Derry, end of July and August. 



Many of the cells which form the compound gall were filled 

 with the bright yellow resting-spores, several in each cell; a few 

 were found singly elsewhere in the epidermal cells of the host. 

 According to Fischer (Phycomycetes, p. 53) and Schroter, the 

 zoospores are produced from sorus- sporangia on the host plant 

 about August, and enter at once into the epidermal cells of 

 another host plant, either those which become modified to form 

 the walls of the gall, or more rarely elsewhere ; there they form 

 their resting-spores as on the Irish specimens. 



SWISS NOTES IN 1912. 

 By H. Stuart Thompson, F.L.S. 



It may be worth while to put on record the finding of various 

 curious forms, hybrids and monstrosities, which I gathered in 

 Switzerland, mostly in the Valais, last summer, which was 

 remarkable as elsewhere for its excessive rainfall and cold. 

 Indeed, the damp weather may account for some of the things 

 observed. 



First, pale colour forms of a number of flowers were in 

 evidence in various places, though, on the other hand, such a 

 plant as Sedum album was as pink as ever I have seen it, 

 especially on a wall at Praz de Fort, in Val Ferret. Pale por- 

 celain-blue blossoms of Campanula rotund if olio, and of C. Scheuch- 

 zeri were observed in several places, and pure white C. excisa 

 in one of the valleys above Binn, where this very rare species 

 grows. In two valleys it ascends, with intervals, to above 7500 ft., 

 and this Campanula seems to enjoy the borders of rocks and 

 stones by mountain paths more than any other habitat. 

 C. Scheuchzeri is very variable — usually with five corolla 

 segments, it occasionally has eight or ten, and one was found 

 with a bifid segment. Some very large blossoms found at Binn 

 and Riederalp were almost saucer-shaped, and the same thing 

 was noticed in 1911 on the Col de Balme, between Argentiere 

 and Martigny. The hirsute variety of C. Scheuchzeri is not 

 uncommon. C. rotund if olia is often very large and handsome in 

 the Alps, and apt to be easily mistaken for the last species. 

 Above the Trient Glacier, in July, at about 6700 ft., I found an 

 obvious and well-marked hybrid between C. Scheuchzeri and 

 C. rhomboidalis. 



Other pale forms observed included Cirsium acaule, pink, at 

 Riederfurka (6800 ft.); Carduus nutans, with beautiful pale pink 

 flowers, close to chalets, near Binn ; Lathy r us pratensis, with pale 

 yellow petals, under fir trees, near Riederalp ; and Prunella 

 grandijlora, mauve and white — a fine clump in the Saleinaz Valley. 



