XXV. LEGUMINA V CE,E I CAUAGANA. 237 



Varieties. 



-** R. li. 2 ncina Dec. is a plant hardly a foot high, found in pine woods 

 in Carolina. 



& R. h. 3 rosea Pursh has the leaflets for the most part alternate, and 

 the branches srnoothish. In its native habitats, on the high mountains 

 of Virginia and Carolina, it grows, according to Pursh, to a con- 

 siderable shrub , whereas the species is a low straggling plant. 



& R. h. 4- macrophylla Dec., R. grandiflora Hort., figured in Arb. Brit., 

 1st edit., vol. v., has the leaflets large, and ovate-roundish ; and the 

 branches and peduncles glabrous, and without prickles. 



The species, and the different varieties, are shrubs or low trees, with tor- 

 tuous and very brittle branches, and leaves and flowers nearly twice the size 

 of those of Robim'a Pseud-acacia. They form singularly ornamental shrubs 

 for gardens ; but, as standards or bushes, they can be only planted with safety 

 in the most sheltered situations. When grafted standard high, and trained to 

 a wire parasol-like frame, supported on a rod or post 6 or 8 feet high, few 

 plants are equal to R. h. macrophylla in point of brilliant display. 



GENUS XIII. 



CARAGANA Lam. THE CARAGANA, or SIBERIAN PEA TREE. 

 Lin. Syst. Diadelphia Decandria. 



Identification. Lam. Diet., 1. p. 611. ; Dec. Prod., 2. p. 268. ; Don's Mill., 2. p. 243. 



Synonyme. Robim'a sp. L. 



Derivation. Caragan is the name of C. arborescens among the Mongol Tartars. 



Gen. Char. Calyx short, tubulous, 5-toothed. Corolla obtuse, straight ; the 

 wings and vexillum about equal in length. Stamens diadelphous. Style 

 glabrous. Stigma terminal, truncate. Legume sessile^ young ones com- 

 pressed, at length somewhat cylindrical and many-seeded, mucronate by the 

 style. Seeds somewhat globose. (Don's Mill.) 



Leaves compound, abruptly pinnate, alternate, stipulate, deciduous ; 

 stipules usually spinescent. Flowers mostly yellow. 



Trees or shrubs, natives of Siberia and of the East. Leaves with the leaflet? 

 mucronate, and the petioles either with a bristly or a spiny point ; their flowers 

 axillary, each on a distinct pedicel, usually several together, pale yellow, 

 except in C. jubata, in which they are white tinged with red ; their stipules 

 usually become spines. They are all ornamental or curious, and of the easiest 

 culture in any common soil ; propagated by cuttings of the roots or by seeds. 

 The dwarf and pendulous-growing species, when grafted standard high on C. 

 arborescens, form very singular trees. 



3? 1. C. ARBORE'SCENS Lam. The arborescent Caragana, or Siberian 

 Pea Tree. 



Identification. Lam. Diet., 1. p. 615. ; Dec. Prod., 2. p. 268. ; Don's Mill., 2. p. 243. 



Synonymes. Robinm Caragana Lin. Sp. 1044., N.'Du Ham. 2. t. 19., Pall. Fl. Ross. l.t. 42. ; 



Caragana sibfrica Ray ; fausse Acacie de Siberie, Robinie de Siberie, Arbre aux Pois des Russes, 



Fr. ; Sibirische Erbsenbaum, Ger. ; Gorochoik, Russ. 

 Engravings. N. Du Ham., 2. t 19. ; Pall. Fl. Ross., 1. t. 42., middle figure ; the plate pf this species 



in Arb. Brit., 1st edit., vol. v. ; and our fig. 385. 



Spec. Char., $c. Leaves with 4 6 pairs of oval-oblong villous leaflets. 

 Petiole 'unarmed. Stipules spinescent. Pedicels in fascicles. (Don's 

 Mill.} A low tree. Siberia, in woods, and upon the banks of rivers. 

 Height 15ft. to 20ft. Introduced in 1752. Flowers yellow; April and 

 May. Legume brown ; ripe in August. 



