Vachellia. ROSACEiE. 405 



pair. Flowers (yellow) in globular heads : peduncles axillary, solitary or 

 2-3 together. 



1. V. Farnesiana (W. & Arn.) : piiinrr 4-8 pairs; leaflets numerous, 

 linear, nearly glabrous : i)cduneles "i-li together. — Mimosa Farnesiana, 

 Linn. Acacia Farn siana, W'dld. spec. 4. ^>. 1083 ; DC. prodr. 2. 

 p. 4(51. 



About New Orleans! Also near St. Marks, Florida, Dr. Chapman! 

 Southern Florida, Dr. Haskr ! doubtless introduced. This species is said, 

 like Acacia Arabica, to exude a considerable ([uantity of gum. 



Crafordia bracleata i?a/. (Spccchio delle scienze, <f-c. 1814; DC. ■prodr. 2, p. 

 .552.) Under this name Mr. Rafincsque has described a papilionaceous plant, said 

 to have been found on tlie banks of the Susqucbannah River in Pennsylvania. 

 It is described as a twining plant, with unequally pinnate leaves, while spicate 

 flowers on a long peduncle, with scarious, subulate and persistent, ciliate bracts, 

 and the legume about 2. seeded. Tlic description does not at all accord with any 

 known Nortii American species, and, if it be correctly described, there is most pro. 

 bably some mistake respecting the native country of the plant in question. 



Order XLIX. ROSACEA. Juss. 



Sepals 5 (rarely 3-4), more or less united, commonly persistent ; 

 the odd one superior or next the axis. Petals 5, perigynous, regu- 

 lar, sometimes wanting. Stamens indefinite, rarely few, distinct, 

 incurved in aestivation, inserted into or next the disk whicli lines the 

 base of the calyx, just within the petals : anthers introrseor versatile. 

 Ovaries solitary or several, distinct, and free from the calyx, or more 

 or less coherent with its sides and with each other : ovules 1-2 or 

 sometimes more : styles lateral or terminal, sometimes partly united : 

 stigma various. Fruit either a drupe, a pome, achenia, or some- 

 times follicular. Seeds anatropous (rarely amphitropous or almost 

 orthotropous), mostly destitute of albumen at least when ripe. Em- 

 bryo straight : cotyledons flat or plano-convex. — Leaves alternate, 

 stipulate, simple or compound. Inflorescence various. FloAvers 

 occasionally polygamous or dioecious. 



Suborder I. CHRYSOBALANE^. R. Br. 



Calyx free from the ovary or cohering on one side with its base. 

 Petals and (the somewhat definite or indefinite) stamens more or less 

 irregular in size or position. Ovary solitary, with 2 collateral erect 

 ovules ; the style arising from its base. Fruit a drupe. — Trees or 

 shrubs (almost M'holly tropical), with simple glandless leaves ; the 

 fruit often eatable. 



