xxvi 
EOYAL IIOKTICTJLTUKAL SOCIETY. 
feet deep ; and, in reply to a question, doubted the practicability 
of remedying the obstruction by pouring in any chemical reagent. 
Mr. McLachlan mentioned that Phyllotreta ohacurella, a species of 
Halticidce^ very common on edible cruciferous plants, had been 
found in multitudes destroying the petals of Limnanthes Douglasiiy 
but leaving untouched neighbouring plants of other natural orders. 
Ileference being made, at the suggestion of Dr. Masters, to a paper 
by Chatin (Ann. d. 8c. Nat , 1856, vi., 256), it was ascertained 
that Limnanthes^ like Tropceolum, appeared to contain allyl sulpho- 
cyanide, ^^^^ S, which was also present in Crucifers. 
Mr. Marshall sent flowers of two varieties of Gloxinia^ G. Car- 
toni and rohusta^ which he stated had been produced by the same 
plant. He also sent a monstrous flower of an Odontoglossum , whicli 
was referred to Dr. Masters for a report. 
GENERAL MEETING. 
James Batkmax, Esq., F.E.S., in tlie Chair. 
Professor Thiselton Dyer called attention to a pot of Gi/m- 
nadenia Conopseay showing that our native Orchids are 
capable of becoming striking plants in cultivation. Ophnjs 
apifera, var. Trollii, also from the Chairman, was new to 
this country. The plants were obtained in the neighbourhood of 
lleigate. Epidendnim nemorale, Lindl., was figured in Bot. Mag. 
under the name of E. verrucosum. It succeeds best under a cool 
treatment. Botryodendron magyiificum is no doubt the same as 
Meryta latifolia^ Bot. Mag., t. 5932. The specimens from Strath- 
fieldsaye, supposed to be Diospyros lucida, were probably Nyssa 
multiflora. The bright crimson tint of the leaves in autumn is 
characteristic in North America, where it is known under the name 
of Tupelo or Pepperidge. A plant of Toxicophlma^ from the 
smaller limb of the corolla, was probably 2\ Thunhergii rather than 
T. spectahilis. An almost unknown Lily, which Mr. Wilson had 
shown in flower, L. californicum, hitherto not seen by Baker and 
Duchartrc, was clearly an ally of L. superhum. 
