GAYLUSSACIA URSINA. 55 



Tab. X. Gaylussacia ursina ; flowering branch of the natural size. Fig. 

 1. Lateral view of a magnified stamen. Fig. 2. The same, seen from with- 

 in. Fig. 3. Fructified ovary magnified, with a cross-section showing the ten 

 uniovulate cells. (The dots are resinous atoms.) Fig. 4. A detached pyrena 

 of the fruit. Fig. 5. Section of the same, showing the seed. Fig. 6. Mag- 

 nified transverse section of an ovary of Vacciniutn corymbosum. 



*#* It may not be improper here to introduce a remark respecting certain 

 dubious Ericaceous genera which appear to border on Aquifoliacese, namely, 

 Cyrilla, Cliftonia, &c. Cyrilla was placed by Jussieu in his Erice«, and 

 Cliftonia was referred to the same family by Sprengel. Lindley,* however 

 in 1836, referred them to the order Celastraceae, with which they have little or 

 no agreement, except in habit. In 1838, it was suggested, in the Flora of 

 J^orth America, that these genera, along with Elliottia, should constitute a 

 suborder, Cyrille^, of the great family Ericaceae, characterized by a poly- 

 petalous corolla, inappendiculate anthers opening longitudinally, and uniovu- 

 late cells of the ovary.f Endlicher, who had omitted Cyrilla and Cliftonia 

 from the body of his Genera Plantarum, afterwards appended them to Erica- 

 ceae m his first Supplement ; but subsequently, with much acuteness, joined 

 the group Cyrilleae to the order Ilicinea;, from which he considers them to 

 differ only in the insertion of the petals and stamens (from the absence of a 

 disk) upon the receptacle, and in having a larger embryo. | Recently, Dr. 

 Lindley has raised tlie Cyrillaceae to the rank of an independent order, which he 

 places next to Olacaces in his most discordant alliance Berberales ; § distin- 



Greenbrier county, Virginia. From this source, the fragment in the Willdenovian 

 herbarium, communicated by Muhlenberg under the name of " Vaccinium coria- 

 ceum," was doubtless derived. 



* Mrod. to Nat. Syst., ed. 2, p. 119. 



+ Torrey & Gray, Flora N. Amer., Vol. I., p. 256 ; note under Celastraceae. 



I Enchiridion Botanicum, 1841, p. 578. 



§ Vegetable Kingdom, 1846, pp. 432, 445. 



