LEGUMIN0S2E-PAPILI0NACE2E. 379 



come the Indigo plants, 1 of which a large number of species are 

 used in the preparation of Indigo blue, notably Indigofcra tinctoria 

 L., Anil L., cceridcea Roxb., argentea L., Jdrsuta L. fil., glanddosa W., 

 &c. ; and from several Tcpkrosias, such as T. toxicaria Pers., Apollinea 

 DC, cinerea Pers., tinctoria Pers., 2 is extracted a similar dye. In 

 England and France several Genistece are sometimes used for dyeing, 

 especially the Dyers' Green-weed (Fr., Genestrolle ; fig. 191). The 

 Butea flowers are rich in an orange colouring matter ; and the fruit- 

 pulp of Sophora japonicd 1 is also used for dyeing yellow. In the 

 United States the wood of Cladrasfis luteal serves the same purpose, 

 and the False or Wild Indigo {Baptista tinctoria') is employed as a 

 succedaneum of true Indigo. 



The wood of several Papilionaceous trees has its industrial value. 

 That of the False-Acacias 6 and the Laburnums 7 is pretty frequently 

 used in Europe. But lofty trees are rare except in the series Sophorcce 

 and Balbergiece. These furnish a large number of woods used for 

 building and ornament, being often remarkable for their grain and 

 colour, and hence prized by the cabinet-maker. The origin of many is 

 still very uncertain. 8 The so-called " Angelin' woods 9 are probably all 

 produced by Andiras ; but some are so, most certainly. The wood of 

 A. inermis is hard, dark-red outside, and is found nearly all over 

 equinoctial America. The Angelin pedra of Brazil, no doubt an 

 Andira, 10 affords a highly prized wood. Several woods called moutouchi 

 wood in Guiana are produced by species of Pterocarpus, such as 

 Moidouchia suberosa Aubl. 11 P. santalinus is said to yield Red 

 Sandal wood. The Sang vane or blood-veined woods of Senegal are 

 those of P. erinaceus and Adansonia. That of P. dalbergioides of 

 India is also much esteemed. 12 Those of the genus Balbergia itself 



1 Rosenth., op. cit., 995. — Guib., op. cit., The anatomical structure of the wood in the 

 ed. 6, iii. 480. arborescent Papilionacea is so variable and often 



2 DC, Prodr., ii. 248-256. — Rosenth., op. so ill known that it is impossible to give any 

 cit., 999. general account thereof; it would need a special 



3 See p. 218, note 2, figs. 195, 196. study, one of the most interesting possible. 



4 See p. 359, note 7. 9 See Guib., op. cit., ed. 6, iii. 355. We have 

 6 See H. Bn., in Diet. JSncycl. des Sc. Med., seen (p. 157) that the racemose Angelin (Angelina 



viii. 338. grajipes) or so-called Andira racemosa is a 



6 Robinia Pseudacacia L., Spec, 1043 (see Vouacapoaa. 



above, p. 203, fig. 159), R. viscosa Vent., R. 10 A. spectabilis ? Saluanha, Config. . . . d. 



hispida L. (see DC, Prodr., ii. 261). All these Princ. Mad., t. 3. 



plants are perhaps only varieties of a single " Pterocarpus suberosus Peks., Syn., ii. 277. 



species. Its wood is not tough. 



7 Cytisus alpinus Mill., Laburnum L., &c. ls Guib., op. cit., ed. 6, iii. 342-345. Calia- 

 (p. 330, note 7). tour wood is also attributed to P. santalinus ; 



s Sauot, in Revue Mar. el Comm. (1869). Bar wood or lied Sandal wood of Africa to P. 



