480 Botanical Society of London. 



3. S. longifolia, stipulis brevissimis recurvis spinescentibus, foliis subsessi- 

 libus lanceolato-ellipticis acuminatis reticulatis coriaceis. 



4. S. Jloribunda, stipulis minimis tuberculiformibus vix spinescentibus, 

 foliis breviter petiolatis ovatis acuminatis coriaceis, paniculae rhachide 

 pubescente. 



5. S. macrophylla, stipulis spinescentibus recurvis, foliis breviter petiolatis 

 amplis ovato-ellipticis acuminatis, paniculae rhachide glabra. 



The third genus Anthodiscus was first described by Meyer in his 

 * Flora Essequeboensis,' but it has not been taken up in any of the re- 

 cent systematic works. It belongs to Rhizobolea. It is distinguished 

 from Rhizobolus by its cohering petals, many-celled ovarium, with 

 the styles equal in number to the cells. The leaves are ternate and 

 are either opposite or alternate. 



BOTANICAL SOCIETY OF LONDON. 



April 6. — J. E. Gray, Esq., F.R.S., President, in the Chair. 



The Secretary announced a donation of plants, presented by Ed- 

 mund Lees, Esq., F.L.S., Corresponding Member of the Society, and 

 Local Secretary for Worcestershire ; also a donation of books from 

 Mr. W. Baxter, A.L.S. Mr. D. Cooper, A.L.S., delivered his third 

 Lecture on the practical part of Botany ; after which the Secretary 

 read a Paper from Robert H. Schomburgk, Esq. (now travelling in 

 British Guiana), on the Triplaris Americana, or Ant Tree of Guiana*, 

 which led to some discussion ; and thanks having been ordered to be 

 returned to Mr. Schomburgk, the Meeting adjourned until April 

 20th. 



April 20.— Dr. Maclntyre, F.L.S., in the Chair. 



The Secretary announced donations of plants and books. The 

 Secretary read a Paper from M. A. Wallis, Corresponding Member 

 of the Society, on the genus Myosotis, which led to some discus- 

 sion between the Chairman, Dr. Bossey, Mr. G. E. Dennes, and 

 other Members, after which the Meeting adjourned until May 4th. 



May 4. — John Edward Gray, Esq., F.R.S., President, in the 

 Chair. 



The usual business of the evening having been dismissed, the Se- 

 cretary proceeded to read a letter of thanks from the British Museum 

 for the specimen of Victoria regia, which the Council thought neces- 

 sary to deposit in the Botanical department of that Institution, and 

 which had been transmitted to the Society by Mr. R. Schomburgk, 

 now travelling in British Guiana. Mr. Dennes read a Memoir on 

 Polygonum Owenii, which, on account of its interest, he had trans- 



* This paper was inserted entire in our last number. 



