238 



ARBORETUM ET FRUTICE BRITANNICUM. 



C. arborescens. 



Variety. 



1 C. a. 2 inermis Hort. has the branches 

 without spines. Plants in the Horti- 

 cultural Society's Garden. 



Pallas informs us that upon the banks of rivers 

 it grows to the height of 18 ft. or more ; but in 

 arid places it is only a small shrub ; in the latter 

 state forming, as we think, the varieties C. (a.) 

 Altagdna, and C. (a.) microphylla. C. arborescens 

 forins an erect stifF tree, with numerous upright- 

 growing branches. The flowers are axillary, one 

 on a pedicel ; the pods are oblong-taper, and each 

 contains 3 or 4 seeds. The wood is hard, com- 

 pact, and very tough ; yellow on the outside ; and 

 within, waved and striped with red, and with 

 reddish brown. 



. 2. C. (a.) Altaga^na Poir. The Altagana 

 Caragan a, or Siberian Pea Tree. 



Identificalion. Poir. Sup., 

 2. p. 89. ; Dec. Prod., 2. 

 p. 268. ; Don's Mill., 2. 

 p. 243. 



Synonymes. Robin/a Al- 

 tagana Pall. Fl. Ross. t. 42., L'Herit. Stirp. t. 76. ; Cara- 

 gdna microphylla Lam. Diet. 1. p. 615. 



Derivation. Altagana is the name of the shrub in Siberia. 



Engravings. Pall. Fl. Ross., t. 42., under the name of Ro- 

 hinia Altagdna; L'Herit. Stirp., t. 76. ; and.our/g. 386. 



Spec, Char., S^-c. Leaves having 6 or 8 pairs ot 

 glabrous, obovate-roundish, retuse leaflets. Pe- 

 tiole unarmed. Stipules spinescent. Pedicels 

 solitary. Legumes rather compressed. (^DorCs 

 Mill.) A low shrub. Siberia, in arid plains. 

 Height 3 ft. to 4 ft. Introd. 1789. Flowers 

 yellow ; April to July. Legume brown ; ripe in 

 September. 



Usually propagated by grafting on C. arborescens. 



3. C. (a.) microphy'lla Dec. The small-leaved Caragana, or Siberian 



Pea Tree. 



Identification. Dec. Prod., 2. p. 268.; Don's Mill., 2. p. 243. 

 Synonymes. Robinm microphylla Pall. Fl. Boss. t. 4'4., 



f. 1, 2.; Caragana Altagdna var. Poir. Suppl. 2. p. 89. 

 Engravings. Pall. Fl. Ross., t. 32. f 1, 2., under the name 



of Robinm microphylla ; and out fig. 387. 



Spec Char., Sfc. Leaves with 6 7 pairs of 

 hoary retuse leaflets. Petioles and stipules S-, 

 rather spinescent at the apex. Root creep- 

 ing. (Bon's Mill.) A low shrub. Siberia, 

 in the Desert of Baraba, and in other arid 

 places. Height 2 ft. to 3 ft. Introduced in 

 1819. Flowers yellow ; April to June. Le- 

 gume brown ; ripe in August. 



J* 4. C. (a.) Redo'wsk/ Dec. Reuowski's Caragana, or Siberian Pea Tree. 



Identification. Dec. Lt'gum., t. 11. ; Don's Mill., 2. p. 243. 

 Engraving. Dec. Legum., t. II. f. 45., in the seedling state. 



Spec. Char., c^-c. Leaves with two pairs of ovate, acute, smooth leaflets. 

 Stipules spinose. Flowers yellow. (Doit's Mill.) A low shrub. Siberia. 

 Height 4 ft. to 5 ft. Introduced in 1820. Flowers yellow ; April and May. 

 Legume brown ; ripe in August. 



386. C. (a.) Allagilna. 



C. (a.) microphylla. 



