GENERAL CHARACTERISTICS OF THE LEGUMINOS^E 185 



Drugs. The important drugs of this family are abrus (Abrus precat- 

 orius), gum arabic (Acacia arabica), gum Senegal (Acacia Senegal), balsam 

 of Peru (Toluifera Pereira), wild indigo (Baptism tinctoria}, purging cassia 

 (Cassia fistula), copaiba (Copaiba oblongifolia, C. officinalis) , fenu- 

 greek (Trigonella Foeno-groecum), liquorice (Glycyrrhiza glabra), indigo 

 (Indigofera tinctoria), physostigma (Physostigma venenosum), senna (Acacia 

 senna), tamarind (Tamarindus indicus) and tragacanth (Astragalus 

 gummiftr). The poisonous plants of the family, such as the loco weeds, 

 have been described in a previous chapter. 



Garden Plants. A large number of beautiful garden plants belong to 

 this family. Such are the sweet pea (Lathyrus odoratus), genista 

 (Cytisus canariensis) , lupine (Lupinus pcrennis, etc), wistaria (Wis- 

 taria sinensis), black locust (Robinia pseudacacia) , flamboyant tree 

 (Poinciana regia), acacia (Acacia), etc. 



BIBLIOGRAPHY 



ENGLER, A. and PRANTL, K.: Die naturlichen Pflanzenfamilien III, Teil, 3 Abteilung, 



1894, 7o-3 8 4- 

 GRAY, ASA, revised by ROBINSON, B. H. and FERNALD, M. L.: A Handbook of the 



Flowering Plants and Ferns of the Central and Northeastern United States and 



Adjacent Canada. (Seventh Edition), 1908, 499-530. 



HARE, HOBART A., CASPARI, CHARLES and RUSBY, H. H.: The National Standard Dis- 

 pensatory. (Eighth Revision), 1905. 



KRAEMER, HENRY: Applied and Economic Botany. 1914, 567-577. 

 LE MAOUT, EMM. and DECAISNE, J.: A General System of Botany, Descriptive and 



Analytical. London, 1873, 364-374. 

 ROBBINS, WILFRED W.: The Botany of Crop Plants. Philadelphia, P. Blakiston's 



Son & Co., 1917, 413-468. 

 WARMING, Eug. transl. by POTTER, M. C.: A Handbook of Systematic Botany. 1895, 



466-475. 

 WETTSTEIN, RICHARD R. V.5 Handbuch der Systematischen Botanik. (Zweite 



Auflage), 1911, 656-666. 



LABORATORY WORKS 



Suggestion to Teachers. During the winter months when this family will be 

 studied probably by the class in botany, only a relatively few plants will be available. 

 They are sweet peas (Lathy nis odoratus), genista (Cytisus canariensis) , chorizeme (Chori- 

 zema ilicifolia), and if large greenhouses are conveniently located, several species of 

 Acacia and Mimosa may be utilized. In California and the west lupines (Lupinus), 

 clovers (Trifolium) and alfalfa (Medicago), etc., can be had. Flowers of a number of 

 wild and cultivated species of this family, as locally obtainable, may be kept in alcohol. 



