SCIENTIFIC COMMITTEE. 



cvii 



of Cherry which had been attacked by ' gummosis,' probably the 

 result of invasion by a bacillus, through a wound where the disease 

 had evidently started. 



Echeveria setosa. — Mr. W. E. Ledger showed a flowering plant 

 of this rare Mexican species, which produces large rosettes of setose 

 leaves and very bright flowers on stems about 9 or 10 inches 

 in height. It was recently described and figured by J. N. Rose and 

 J. A. Purpus in " Contributions from the U.S. Nat. Herbarium " 

 xiii. (1910), p. 45, t. 10. A Botanical Certificate was unanimously 

 recommended for this plant. 



Iris fili folia. — Mr. W. R. Dykes, M.A., showed flowers of the rare 

 (true) Iris fili folia. It differs from the plant in common cultivation 

 under that name (which is a form of Iris Xiphium) in having a distinct 

 perianth tube. It has beautiful purple flowers, with a broad yellow, 

 blue-edged band down the middle of the outer segments. 



Castilleja miniata. — Mrs. Longstaff, of Wimbledon, showed a 

 good and well-flowered spike of Castilleja miniata, which was now 

 flowering in her garden for the third time, from seed collected in 

 British Columbia. She believed it to be parasitic, in her garden 

 upon a species of Saponaria. 



Floral Malformations. — Mr. E. Mann, of Charters Towers, Queens- 

 land, sent some further floral malformations from his well-manured 

 garden, which had passed through a dry season with a high temperature 

 (ioo° shade) . There were well-marked examples of ' ' hen and chickens ' ' 

 Zinnias and a proliferous Gomphrena. He had previously sent pro- 

 liferous and virescent examples of several other plants (see p. xliii). 



Double Apple flowers. — Mr. H. M. Eddie, of Kerrisdale, British 

 Columbia, wrote concerning some flowers on young Apple having 

 double flowers of remarkable size, being 3 inches in diameter, and 

 with twenty-eight to thirty petals each. It will be interesting to see 

 whether the doubling is maintained as the plants become older, for 

 it is no unusual thing for young Apple trees to produce double flowers 

 but as the trees get older to produce only single ones. 



Scientific Committee, July 20, 1915. 



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

 members present, and Mr. G. Forrest, visitor. 



Galls on Poplars. — Mr. J. Fraser, F.L.S., showed specimens of 

 galls on the midribs and petioles of Black and Lombardy Poplars, 

 and further specimens came from Mr. Fielder. They are due to the 

 attack of the lipriis known as Pemphigus bursarius. 



Curious Growth of Potato Tubers. — Mr. R. Hooper Pearson showed 

 Potato tubers received from a correspondent of the " Gardeners' 

 Chronicle.' ' These had produced young tubers apparently inside 

 the older ones, but in reality attached outside, and arising as usual 

 from a branch from the shoot derived from an eye. The eye was 



