Amorpha LEGUMINOSAE Indigofera 



white, blue or purple, not papilionaceous; wings and keel of the corolla wanting', pod 

 short, indehiscent, usually 1-seeded. 15 species, in North America, 1 cultivated in 

 China. (Greek: amorphos, deformed, referring to the incomplete corolla.) 



1. Amorpha fruticosa Linn. Bastard Indigo WiVcM (Tzu Hua Huai; Purple- 

 flowered Sophora) (R.M. 505). Shrub, to 3m.; fls. purple, V-VIII; fr. X; pod 

 curved. Introduced from eastern United States; locally in Ku. Planted, orna- 

 mental. 



21. Wisteria Nutt. ^MM (Tzu T'eng Shu) 

 Woody twining vines with deciduous pinnate Ivs.: fls. in long drooping racemes, 

 lilac-purple, blue or white; corolla complete: pods flat, dehiscent, several-seeded, some- 

 times more or less constricted between the seeds. 7 species, in eastern North America 

 and eastern Asia; 2 in China. (For Caspar Wistar, Professor of Anatomy, University 

 of Pennsylvania, 1761-1818.) 



1. Wisteria sinensis (Sims) Sweet Chinese Wisteria §S$g (Tzu T'eng; Purple Vine) 

 (R.M. 507). Woody vine; fls. purple or white, IV-V; fr. IX-X; lfts. 7-13. China; 

 locally in An., Che., Ki., Ku. Woodland and planted ornamental. Fig. 179. 



22. Robinia Linn. Locust WW.U (Yang Huai Shu) 

 Trees or shrubs with alternate pinnate Ivs., the stipules often modified as spines: 

 fls. white, in pendulous racemes: pod flat, several-seeded: about 20 species, in North 

 and Central America; 1 planted in China. (For Jean Robin, 1550-1629; and Vespesian 

 Robin, 1579-1600; herbalists to the king of France.) 



1. Robinia pseudoacacia Linn. Black Locust #$| (Yang Huai; Foreign Pagoda- 

 tree) (R.M. 509). Tree, to 15m.; fls. white, IV-V; fr. VIII-X. Introduced and 

 naturalized from eastern United States; locally in An., Che., Ki., Ku. Planted, 

 ornamental, woodland; naturalized, waste ground. Fig. 180. 



23. Caragana Lam. Pea Tree $%lg-$M (Chin Chi Erh Shu) 

 Deciduous shrubs: Ivs. fascicled, pinnate, the tip of the rachis and the stipules 

 often spiny: fls. solitary or fascicled, usually yellow: pod linear, terete, several-seeded. 

 About 50 species, in central, northern and eastern Asia; 40 in China. (From Caragan, 

 the Mongolian name of the plant.) 



1. Caragana chamlagu Lam. i$H^ fChin Chi Erh; Golden Pheasant) (R.M. 516). 

 Spiny shrub, to 2 m.; fls. yellow, IV-V; fr. V-VI. China; locally in Ki., Ku. 

 Woodland. 



24. Indigofera Linn. Indigo /fclijg (Mu Lan Shu; Woody-indigo Genus) 

 Shrubs and perennial herbs, often pubescent with hairs attached at the middle: 

 Ivs. usually pinnate: fls. in spikes or racemes, pink or purple; anthers apiculate, cen- 

 trally attached: pod usually cylindrical, often curved. About 300 species, in the warm 

 countries of the world; 50 in China. (Latin terms meaning "indigo-bearing." Some 

 species yield indigo.) 



Key to the Species 

 a. Fls. 1 cm. or more long. 



188 



