CXX PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



SCIENTIFIC COMMITTEE. I 



May U, 1912. , 



Mr. E. A. Bowles, M.A., F.L.S., F.E.S., in the Chair, and twelve 



members present. 



Irises. — It was reported that the Council had awarded a Certificate 

 of Appreciation to Mr. W. E. Dykes, M.A., for his work with the Irises 

 which he exhibited at the last meeting of the Committee. (See p. xlii.) 



Arsenical Poisoning. — Dr. Voelcker said that he had ascertained that 

 the source of the arsenic in the water referred to at the last meeting j 

 was weed-killer. (See p. xli.) 



Tulips with Fimbriated Edges. — Messrs. Pearson, Lowdham, sent 

 two Tulips having the perianth segments much cut along the edges. 

 The abnormality occurred among T. Gesneriana and ' Margaret. ' The 

 plants had been marked so that their behaviour next season may be 

 ascertained. One or two other similarly cut-petalled plants have been [ 

 reported this season. | 



Hybrid Orchid.— Mr. O'Brien, V.M.H., showed from Mr. E. F. \ 

 Clark, of Evershot, Dorset, a flower of an Orchid raised by crossing { 

 Laelia cinnaharina and Laeliocattleya x ' G. S. Ball.' The latter is 

 a hybrid between Laelia cinnaharina and Cattleya Schrdderae. The 

 flower was an improved Laelia cinnaharina, large and more open in the 

 lip, but four of the pollen miasses were large and four not quite so large, 

 thus differing from both Laelia and Cattleya. Mr. Clark proposed to 

 name the hybrid Laeliocattleya x * Cinnabal.' 



Primulas. — Professor I. Bayley Balfour, F.E.S., showed the 

 following Primulas : P. Faurei (Franch.) from mountains of Japan, a 

 plant with rose-coloured flowers freely produced, and leaves with golden 

 farina below ; P. tihetica (Watt), a dwarf plant with rose flowers allied 

 to P. involucrata and native of the Tibetan highlands; P. Reedii 

 (Duthie) (Botanical Magazine, 6961), a fairly well-known and beautiful 

 pale violet species, not quite hardy, from Kumaon, introduced in 1885 ; 

 P. malvacea (Franch.), from Yunnan, allied to P. cortusoides and 

 having mauve flowers in two or three superposed umbels; P. deflexa 

 with bluish-lilac flowers, rather small but in dense clusters and very 

 sweetly scented; P. memhranifolia (Franch.) with violet -coloured 

 flowers, a native of Yunnan; P. uniflora (Klatt) with very pale violet 

 flowers (on a two-flowered scape in this instance) from the Sikkim 

 Himalaya; P. pulchelloides (Balfour), with rather large, beautiful, 

 violet- coloured flowers, similar in appearance to P. pulchella, but nearly 

 allied to P. nivalis, a native of China; and P. x * Edina ' (P. Beesiana 

 X P. Bulleyana), a beautiful hybrid with salmon-coloured flowers. 

 Botanical Certificates were recommended to the last five plants. 



