North American Plants. 87 



River, that have not yet been examined. Indeed, almost every 

 year some additions are made to the Flora of New Jersey, by 

 the discovery of new and r,are plants, chiefly from Monmouth, 

 Gloucester, and Burlington counties. It is not improbable that 

 in some of the unexplored parts of the pine barrens other lo- 

 calities of our Empetrum will be found, with the ripe fruit, 

 which is still a desideratum in its history. 



In an abstract of the botanical discoveries of De la Pylaie in 

 Newfoundland, published in the Transactions of the LinnEean 

 Society of Paris, this zealous botanist (who never lived to com- 

 plete his Flora of that large island) enumerates the Emfclrum 

 rubrum. Can this be identical with the South American spe- 

 cies, or is it our E. Conradti ? The Schizcea jmsilla of Pursh 

 affords a remarkable example of a plant growing in two places 

 widely separated in latitude, and only in one intermediate spot. 

 Gaudichaud found it in the Falkland Islands, and De la Pylaie 

 in Newfoundland, while between these two points it has only 

 been detected in the pine-barrens of New- Jersey.* 



LEAVENWORTHIA.t 



Calyx somewhat erect, equal at the base. Petals equal, 

 cuneiform, truncate or emarginate. Filaments distinct, 

 toothless. Silique sessile, oblong-linear, compressed, some- 

 what inflated and torulose ; valves indistinctly nerved. Style 

 distinct, or almost wanting. Stigma minutely bidentate. 

 Seeds in a single series, flattened, with a broad winged margin. 

 Funiculus free.f Embryo nearly straight, or with the radicle 



* See Ann. Lye. vol. ii. p. 266. 



t In honor of Dr. M. 0. Loavenworth, of the United States army, an indefati- 

 gable botanist, who has largely contributed to our knowledge of the plants of 

 Arkansas, Louisiana, and Florida. 



t Adhesion of the funiculis to tho septum is not a frequent character in Cru- 

 ciferoe. De Candolle remarks, that it occurs only in Pctrocallis and Lunaria. It 

 has since been noticed in Ptcrolobium, Andrz. and Coringia, Heist. 



