238 ARBORETUM ET FRUTICE BRITANNICUM. 
Variety. 
¥ C. a. 2 inérmis 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.) 
Altagana, and C.(a.) microphylla. C. arboréscens 
forms 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. 
a 2, C. (a.) Atracawa Poir. The Altagana 
Caragana, or Siberian Pea Tree. i 
Identification. Poir.Sup., 
2. p. 89. ; Dec. Prod., 2. 
p. 268. ; Don’s Mill., 2. 
. 243 
Pp : 388. C. arboréscens. 
Synonymes. Robinia Al- Ee or 
tagana Pall. Fl. Ross. t, 42., L’Hérit. Stirp. t.76.; Cara- 
gana microph¥lla Lam. Dict. 1. p- 615. ios 
Derivation. Altagana is the name of the shrub in Siberia. 
Engravings. Pall. Fl. Ross., t.42., under the name of Ro- 
binéa Altagdna; L’Hérit. Stirp., t. 76.; and.our jig. 386. 
Spec. Char., §c. Leaves having 6 or 8 pairs ot 
glabrous, obovate-roundish, retuse leaflets. Pe- 
tiole unarmed. Stipules spinescent. Pedicels 
solitary. Legumes rather compressed. (Don’s 
Mill.) A low shrub, Siberia, in arid plains. 
Height 3 ft. to 4ft. Introd. 1789. Flowers 
yellow; April to July. Legume brown; ripe in 
September. 
386. C. (a.) Altagana. 
Usually propagated by grafting on C. arboréscens. 
3. C. (a.) micropuy’LLA Dec. The small-leaved Caragana, or Siberian 
Pea Tree. 
Identification. Dec. Prod., 2. P 268.; Don’s Mill., 2. p. 243. 
Synonymes. Robinza microphylla Pall. Fl. Ross. t. 42., 
f. 1,2.; Caragdna Altagdna var. Poir. Suppl. 2. p. 89. 
Engravings. Pall. Fl. Ross., t. 32. f. 1, 2., under the name 
of Robinéa microphflla ; and our jig. 387. 
Spec. Char., &c. Leaves with 6—7 pairs of a7) As 
hoary retuse leaflets. Petioles and stipules J BS 
rather spinescent at the apex. Root creep- aif VW 
ing. (Don’s Mill.) A low shrub. Siberia, 
in the Desert of Baraba, and in other arid WZ Ve 
places. Height 2 ft. to 3ft. Introduced in Ch ae 
1819. Flowers yellow ; April to June. Le- 
gume brown; ripe in August. 
387. C. (a.) microphylla. 
a 4, C.(a.) Repo’wsxr Dec. Redowski’s Caragana, or Siberian Pea Tree. 
Identification. Dec. Légum., t. 11. ; Don’s Mill., 2. p. 243. 
Engraving. Dec. Légum., t. 11. f. 45., in the seedling state. 
Spec. Char., §c. Leaves with two pairs of ovate, acute, smooth leaflets, 
Stipules spinose. Flowers yellow. (Don’s Mill.) A low shrub. Siberia, 
Height 4:{t. to 5 ft. Introduced in 1820, Flowers yellow; April and May. 
Legume brown; ripe in August. 
