1853.] Linnean Society. 2G9 



Oxycladus has nothing to do with Bignoniacece, even in the widest 

 sense, but belongs to Myoporacea, being allied to Stenochilus, R. Br., 

 and Bontia, L. 



In conclusion, the author states that he distributes the true Cres- 

 centiacecB into two sectional subdivisions, as follows : — 



1. TaNjECie^. Calyce persistente, regulari, 5-fido — Colea, Peri- 



hlema, Phyllarthron, Tanceciiim, Tripinnaria, Sotor (?). 



2. Crescentie^. Calyce deciduo, irregulari, spathaceo v. bipar- 



tito — Parmentiera, Crescentia, Kigelia. 



He adds that all the plants belonging to the Order have a tendency 

 to form winged petioli; and thinks it not improbable that the simple- 

 leaved species may hereafter be looked upon as plants with abortive 

 leaflets and highly-developed phyllodia. The ovary too, he remarks, 

 in all Crescent iacete, is unilocular, with a truly parietal placentation ; 

 and it is only when the placenta; meet, as they generally do when 

 the fruit approaches maturity, that the placentation appears to be 

 axile, and the fruit two- or more celled. 



January 17th, 1854. 



Robert Brown, Esq., V.P., in the Chair. 



John Disney, Esq., Frederick William Headland, Esq., George 

 H. K. Thwaites, Esq., and the Rev. John G. Wood, M.A., were 

 elected Fellows. 



Read a letter from David Moore, Esq., A.L.S., of the Botanic 

 Garden, Glasnevin, near Dublin, addressed to James Yates, Esq., 

 F.L.S., &c. " On the introduction of Anacharis Alsinastrum, Bab. 

 into Ireland." 



" It is rather remarkable," Mr. Moore observes, " that It should 

 have been noticed in England and in Ireland about the same time. I 

 am not perfectly certain now, but I think it was in the early part of 

 1842 I first saw the plant growing in a sn^all pond in the garden of 

 Isaac M. D'Olier, Esq., of Booterstown, near Dublin. That gentle- 

 man has been long known for his zeal in horticultural pursuits, as 

 well as for his fine collection of exotic plants, which he has been in 



No. LV. — Proceedings of the Linnean Society. 



