INDIGOFERA 



1645 



baceous perennials. A light, sandy loam, well enriched 

 and deeply worked, suits them well, and they like a 

 sheltered position in a rather warm, sunny place. 

 Prop, by division or seed. 



A. Lf.-segms. toothed or crenate. 



Delavayi, Bur. & Franch. Fig. 1955. Lvs. few, radi- 

 cal; Ifts. 4-5 in. long, not quite opposite: stamens in- 

 cluded. B.M. 7462. Gn. 54:430; 60, p. 229; 72, p. 421. 

 G. 23:157. Gn.W. 15:713. G.W. 15, p. 409. R.H. 

 1893:544. J.H. III. 30:449. Gt. 43:1398. Mn. 3, p. 

 26. G.C. III. 26:123. G.M. 38:306. 7. Delavayi is 

 a hardy plant with handsome pinnate foliage, each If. 

 being 1 ft. long, with as many as 15-20 dentate segms. : 

 scape 1-2 ft. high, bearing 2-12 large trumpet-shaped 

 rosy purple fls., each 2-3 in. long and as much wide. 

 These fls. are probably equal in decorative value to 

 many of the bignonias cherished in greenhouses. In 

 size and beauty they rank with those of catalpa, big- 

 nonia and tecoma, of the same family. The tube is 

 yellow inside and out, and the 2 upper lobes are smaller 

 than the 3 lower ones. 



lutea, Bur. & Franch. Two to 4 ft.: Ivs. mostly 

 radical, 8-15 in. long, pinnate, long-petioled ; Ifts. 

 broad-lanceolate, crenate: scapes stout and stiff, bear- 

 ing a few bracts and 6-20 yellow, somewhat pendulous 

 fls., with limb 2 in. across and paler yellow than the 

 tube. S. W. China, 10,000-12,000 ft. altitude. G.C. 

 III. 50, suppl. Aug. 19 (1911). 



AA. Lf.-segms. parted or dissected. 

 variabilis, Batalin. Subshrub: Ivs. 2- or 3-pinnate; 

 segms. parted or dissected, their lobes entire or slightly 

 lobed: fls. as many as 10, pale rose. Gt. 47, p. 222. 

 A strong-growing, bushy plant covered with fls. each 1 

 in. or more across, from May to Oct.: seedlings bloom 

 the first year. 



AAA. Lf.-segms. often entire or nearly so. 



Olgae, Regel (/. Koopmannii, W. Lauche). Subshrub, 

 2-3 ft. high: Ivs. 2-4 in. long; segms. linear-oblong or 

 lanceolate, narrower than in I. Delavayi, especially at 

 the base, entire or with a few distant teeth toward the 

 tip: fls. pale pink, veiny; tube \Y^ in. long; limb about 

 1 jn. across, the 5 lobes nearly equal. B.M. 6593 (throat 

 not yellow). G.C. II. 19:89. Gn. 28, p. 653. The 

 hardiest species. 



grandiflora, Bur. & Franch. Differs from /. Delavayi 

 in its shorter Ivs., more rounded Ifts., segms. ovate or 



broader, short scapes bearing only 1 or 2 fls. as large as 

 those of /. Delavayi, but with narrower calyx-lobes and 

 longer corolla-lobes, the color deep rose-red. Dried 

 specimens show about a dozen scapes on a plant. China 

 Gn. 56:22. J.H. III. 46:357. G. 27:349; 35:145. 



1956. Indigofera decora 

 var. alba. 



1955. Incarvillea Delavayi. 



G.M. 46:219. Var. brevipes, Sprague (7. Bonvalbtii, 

 Hort., not Bur. & Franch.), is offered abroad: "large 

 brilliant crimson fls., habit of 7. Delavayi:" pedicels 

 much shorter than the peduncle. Yunnan, China. 



compacta, Maxim. Handsome hardy perennial, 

 glabrous or somewhat pubescent : st. short, becoming 1 

 ft. or more high: Ivs. fleshy or thick, mostly radical, 

 pinnatisect; segms. subcordate-ovate, all more or less 

 decurrent, entire or nearly so: fls. at first congested near 

 the crown, but becoming elevated, purple, the corolla 

 2-2 Yi in. long and the limb l^ in. across; corolla-tube 

 dilated, the limb broad and with roundish lobes; calyx- 

 teeth deltoid, acuminate. N. W. China. Gt. 49:1479. 



L. H. B.f 



INDIAN BEAN: Catalpa. I. Cherry: Rhamnus caroliniana. I. 

 Corn : Zea Mays. I. Cress: Tropxolum. I. Cucumber-root: Medeola 

 virginica. I. Currant: Symphoricarpos vulgaris. I. Fig: Opuntia 

 wlgaris. I. Hemp: Apocynum cannabinum. I. Mallow: Abutilon. I. 

 Physic: Gittenia. I. Pipe: Monotropa. I. Rice: Zizania aquatica. 

 I. Shot: Canna. I. Tobacco: Lobelia inflata. I. Turnip: Arisxma 

 triphyUa. I. Wheat: Fagopyrum tataricum. 



INDIGO: Indigofera. False Indigo: Baptisia and Amorpha. 



INDIGOFERA (indigo-bearing}. Leguminosse. IN- 

 DIGO. Shrubs and perennial herbs sometimes grown for 

 ornament, and some species cultivated in various parts 

 of the world for indigo. 



Plants of differing habit, more or less silky-hairy: 

 Ivs. odd-pinnate (rarely digitate), or sometimes simple 

 (1-foliolate) : fls. usually small, in axillary racemes or 

 spikes, in color ranging from purple to rose and white, 

 papilionaceous; standard mostly roundish, often per- 

 sisting for some time; keel with a spur or swelling on 

 either side ; stamens 10, monadelphous, or 9 and 1 : pod 

 various, usually with thin partitions between the 

 seeds. The species are probably 300, in tropical 

 regions of the world, and extending to the Cape region 

 of S. Afr. Several species are native to the U. S. 



Indigo is mostly the product of 7. tinctoria, of Asia, 



