SCIENTIFIC COMMITTEE, 
XXXV 
merous flowers of Narcissi ; in each case there were eight perianth 
pieces, eight stamens, and four carpels. The tetramerous condition 
of these flowers seems, therefore, not uncommon, and it is not rare 
in nearly allied plants. 
Scientific Committee, June 5, 1917. 
Mr. E. A. Bowles, M.A., F.L.S., F.E.S., in the Chair, and six members 
present. 
Many-flowered Tulips. — Mr. W. C. Worsdell, F.L.S., remarked upon 
the branched Tulips shown at the previous meeting, which are common 
especially among Darwin varieties in many gardens, that the many- 
flowered condition arose from adnation of branches, not from fasciation, 
as might appear probable from the external characters of the growths. 
He drew attention to the occurrence of branching in some species, as 
in Tulipa biflora, T. saxatilis, and T. praestans, and Mr. Bowles 
remarked that it seemed to be a primitive condition. 
Cup-shaped Leaves. — Mr. J. Fraser, F.L.S., showed a "blind" 
Cauliflower in which a leaf had assumed the form of a cup. This is 
not uncommon in Cauliflowers, and is associated with the occurrence 
of a leaf at the tip of a shoot where it takes the place of a terminal 
bud. Mr. Anstis sent a similar growth in Aucuba from his garden 
at Birmingham, where the two opposite leaves formed a cylinder nearly 
2 inches long before their free parts were reached. 
Pyrus torminalis &c. — Mr. J. Fraser showed a series of specimens 
which he had collected in various localities, mostly on the Surrey 
downs, of Pyrus torminalis, P. intermedia, and P. latifolia. He and 
other members of the Committee remarked upon the possible hybrid 
origin of P. latifolia and P. intermedia, and the possibility that birds 
had carried the seeds of some of the forms from neighbouring gardens 
to apparently wild localities, where Mr. Fraser had found the trees 
growing. 
Various Plants. — Mr. H. J. Elwes, F.R.S., showed a series of plants 
from his garden, including Paeonia Emodi, P. albiflora, P. Broteri, 
from Portugal, a bright, light form of P. lobata (a variety of P. officinalis), 
and Polygonatum verticillatum, which he had collected many years 
ago in Perthshire. Pie also showed a large, dark form of Camassia, 
probably a seedling from C. Leichtlinii. 
Scientific Committee, June 19, 1917. 
Mr. E. A. Bowles, M.A., F.L.S., F.E.S.,in the Chair, with nine members 
present, and Mr. R. Farrer (visitor). 
Pine Rust. — Mr. A. D. Cotton showed specimens of Pine blister 
rust on Pinus Strobus from Haslemere. This disease is due to the 
fungus Cronartium Ribicola, and has its alternate stage on Black 
Currant or some other species of Ribes, occurring at times on the 
