SCIENTIFIC COMMITTEE, MARCH 22. 



XXXV 



Scientific Committee, March 22, 1910. 



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

 sixteen members present. 



Algae in water-trough. — Dr. Voelcker reported that the alga which 

 he showed at the last meeting had been identified at Kew as Phormi- 

 dium laminosum, and that treatment with copper sulphate at the rate 

 of one part in 5,000,000 of water had proved effective in killing it. 



Cyclamen lafifoliiun. — Mr. A. W. Sutton, V.M.H., sent two plants 

 of Cyclamen latifolium for comparison with others recently shown, 

 grown from corms collected by him in Palestine. He remarked that 

 young corms are very difficult to obtain, because they are almost always 

 deeply embedded in the crevices of the rocks, and it is only the large 

 and overgrown roots that one is able to get without much trouble, with 

 the result that the flowers then are not so large as they would be on 

 younger plants. The majority of the Cyclamen he had seen in Syria 

 are white with red base, but he had also seen self-coloured reds of 

 various shades and often considerably larger than those shown. 



Branching of mid-rihs. — Mr. Bowles showed, on behalf of Canon 

 Ellacombe, a leaf of Carpenteria calif ornica having the mid-rib forking 

 at about one-third from the base. He also showed a flower of Iris 

 reticulata from his own garden exhibiting a similar phenomenon. 



Primula Maxvmowiczii (fig. 71). — Messrs. J. Veitch sent P. Maxi- 

 mowiczii, which had been obtained from West China at an altitude of 

 9,000 feet, and was now seen for the first time in cultivation. The 

 elliptic-oblong leaves, with small teeth along their edges, are about 

 2 to 3 inches long, quite glabrous and without farina, and form a 

 rosette. The scape, about 10 inches tall, bears many flowers, arranged 

 verticillately as in P. japonica, having long, narrow, triangular bracts. 

 The calyx is campanulate and about half the length of the corolla tube. 

 The corolla is dark, dear purple, and has the lobes reflexed. On the 

 motion of Sir J. Llewelyn, seconded by Mr. Douglas, V.M.H., a 

 Botanical Certificate was unanimously recommended for the plant. 



Monoecious Salix. — Mr. Bowles showed branches of Salix cinerea 

 from Myddelton House, Waltham Cross, bearing both male and female 

 catkins. Mr. Eraser, F.L.S., said the pistils appeared to be meta- 

 morphosed stamens. He had seen a somewhat similar condition before 

 in *S'. aurita in several successive years. 



Seedling Violas. — A number of flowers of a seedling of Viola hirta 

 from Devon, sent by W. P. Stark, Esq., Basingstoke, were shown. 

 Their appearance suggested the probability of their being hybrids with 

 one of the garden forms. 



PritzeVs " Iconum Botanicarum Index." — Mr. Elwes, F.E.S., 

 brought forward the question of the issue of a new edition of Pritzel's 

 Iconum Botanicarum Index locupletissimus, which had been referred 

 to in the Annual Eeport of the Council. He suggested that it was a 

 matter that the Society might itself undertake with great benefit to 



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