SCIENTIFIC COMMITTEE, JULY 26 & AUGUSI .9. 



clxi 



SCIENTIFIC COMMITTEE. 



July 26, 1904. 



Dr. M. T. Masters, F.R.S., in the Chair, and ten members present. 



Aspen Poplar with galls. — Mr. Odell showed branches on which the 

 globular gahVof Eriophyes pustulatum were remarkably abundant. 



Solanum muricatum (S. guatcmalense hort.) — Mr. A. W. Sutton, 

 Y.M.H., exhibited fruiting plants of this species. The egg-shaped fruit is 

 known as the " Melon-Pear." They are remarkably juicy and cool, with a 

 distinct flavour, suggesting the name. 



Heath malformed. — Mr. Kitson, of Newton Abbot, sent flowers of the 

 common Heath, with the petals free, and only four stamens opposite the 

 sepals, which were subpetaloid. 



Carnation sport. — Mr. Roberts, of Croxley Green, Herts, sent a stem 

 bearing two flowers, one a self, rose-coloured flower, and the other an 

 ordinary bloom of 'Lottie Collins,' from a plant layered last year from 

 the latter. The sport may possibly be a reversion to the rose-coloured 

 flowers of the wild Dianthits Caryophyllus. 



Peach Mikleic. — Mrs. Chambers, of Hatfield Court, sent Peach leaves 

 and fruits covered with mildew. Dr. Cooke reported as follows : 



" This mildew is not common on Peach, but not uncommon on Plum. 

 In this white mildewy stage it is an Oidium similar to that of the Grape, 

 but in its mature condition would probably be Podosphcera tridactyla, 

 Jouen. R.H.S. xxviii. p. 19, pi. xi. fig. 16. The remedy should be the 

 same as recommended for Grape mildew — dusting with powdered sulphur, 

 or with the addition of a little lime. It will not injure the fruit. Use 

 sulphur at once, but I fear it is too late for this season. Burn all possible 

 of the mildewy leaves, to prevent the spores spreading, as they are here by 

 thousands." 



Scientific Committee, August 9, 1904. 

 Dr. M. T. Masters, F.R.S., in the Chair, and seven members present. 



Datisca cannabina, Parthenogenesis «z.— Mr. Odell showed female 

 flowering branches with swelling ovaries ; but as the pistil is proto- 

 gynous, and the only male plant grew at a distance of a hundred yards, 

 the fruit was apparently forming without fertilisation. 



Proliferous Clover.— Mr. Odell also showed specimens of this not 

 uncommon monstrosity, in which the carpels are virescent, the carpellary 

 leaves being both simple and trifoliolate. 



Cucumber-formed Melon.— Mr. Odell also exhibited a variety of Melon 

 with the form of a large Cucumber. The form comes true by self- 

 pollination. 



Watsonia with. aerial corms.—Mv. Chittenden showed stems bearing 

 axillary corms similar to the bulbils normally occurring on bulbiferous 

 Lilies. 



