BOTANICAL INFOUMATTON. 377 



Note on the Genus Doonaj by G. H. K. Thwaites, Esq. 



To the description of this genus, published in Vol. IV! of this Work, 

 page 7 (1852), may be added the following character of the embryo : 

 Embryo cotyledonibus foliaceis, valde insequalibus ; harum maxima in- 

 ter stratum oleoso-albuminosum contorto-convoluta, in germinatione 

 inclusa ; altera brevissima, in germinatione ssepissime emergente. 

 The above shows the genus Doona^ Thw., to be abundantly distinct 

 from Hopea^ Eoxb., the cotyledons of which, like those of Vatica, L., 

 are subequal, very fleshy, and emergent in germination. 

 Seven species of Doona have now been detected in Ceylon. 



BOTANICAL INFORMATION 



Valuable Americaii Herbarium for Sale. 



This Herbarium has been collected, during many years* residence in 

 the United States, by John Carey, Esq., who was actively engaged there 

 in botanical pursuits, but who is now about to give up his house in 

 London, in consequence of a recent severe bereavement in his family. 



The Collection includes the indigenous plants of the North American 

 Continent, from Canada to California, and Northern Mexico, containing 

 many of the recent discoveries in the latter countries; and, with respect 

 to those of the Northern and Middle States, it is almost complete, and 

 no less so, to a very great extent, in respect of the Elora of the Southern 

 and Western States. The specimens are unusually full and fine, com- 

 prisino- the best selections from very numerous collections made in all 

 parts of the Union, and amounting, it is believed, to upwards of 50,000 ; 

 the whole very neatly and carefully cemented down upon upwards of 

 12,000 handsome, full-sized, and heavy sheets of white paper, arranged 

 in appropriate genera sheets of stiff coloured paper.* 



* Notwithstanding, however, the size of the paper, the collection is capable, with- 

 out inconveuience, of being, if desired, incorporated with any other Eortus Siccus; 

 and we know, from those best conipeteut to judge, that this is one of the most re- 

 markable, most complete and faultless of American Herbaria, that has ever beta 

 formed, aud the most authentically named- 



VOL. VIII. ^ ^ 



