300 



Rliododendron arhorescens. (Garden and Forest, i, 400, fig. 64.) 

 Rhododendron Vaseyi. (Garden and Forest, i, nj, fig. 60}^ 

 Sporocarps discovered by Prof. E. Orton in the Erian Shale of 



Colnmbns, Ohio. J, W. Dawson. (Canad. Rec. Sci., hi., 



137-140; one figure.) 



Notice oi Protosalvinia Hiironcnsis and Sporocarpon fnrcatitm^ 



regarded as Rhizocarps by the author, 



Tigridia Pringlei. S. Watson. (Garden and Forest, 1., 389, 



fig. 61.) 



Botanical Notes. 



On two recently published Genera. Two plants of very great 

 interest have recently been made known through the pages of 

 Annals of Botany. The one, Hydrothrix, a new genus of Pon- 

 tederiaceae, was published in Vol. i., No. 2, by Sir J. D. Hooker, 

 from specimens collected by Gardner in tropical Brazil in 1838. 

 Its affinities with Heteraitthera were first suggested by Dr. Gray. 

 While placed in this natural order, it is remarked that it is a very 

 aberrant member: '* in all respects of habit, foliage, inflorescence 

 and flowers it is totally unlike any known genus of Pontederia- 

 " It is a caespitose, aquatic annual, rooting in sand, very 

 densely leafy, with minute axillary flowers. Through some 

 mistake, it is denominated //. Gardneri in the text and H. ver- 

 ticillaris on the accompanying plate. 



The other plant here alluded to is a native of central China, 

 beanng a curious resemblance in its habit and appendaged fruits 

 to the *' water chestnut " {Trapa), It has been described by 

 Prof D. Oliver in Icones Plantarum, t. 1595, as Trapella Sinensis, 

 and made the subject of an extremely interesting and complete 

 monograph by Dr. F. W. Oliver in Annals of Botany, Vol. ii., 

 No. 5, Its botanical relation is regarded as with the Pedaline?e, 

 and its floral structure is compared by Dr. Oliver with that oi 

 Pedalium. 



Proceedings of the Club. 



The regular meeting was held on Tuesday evening, October 

 9th, the Vice-President in the chair and 30 persons present. The 

 committee appointed to consider the question of more frequent 



1 



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