《中国植物志》|| 豆科 LEGUMINOSAE ||木蓝亚组 Subsect. Indigofera ||野青树 Indigofera suffruticosa Mill.

63.野青树（中国主要植物图说•豆科）假蓝靛（海南）图版91：8-16
Indigofera suffruticosa Mill. Gard. Dict. ed. 8, no. 28. 1768; Prain et Baker in Journ. Bot. 40: 137. 1902; Merr. Enum. Philip. Fl. Pl. 2: 275. 1923, et in Contr. Arn. Arb. 8: 75. 1934; Craib, Fl. Siam. Enum. 1: 381. 1928; Merr. et Chun in Sunyatsenia 5: 5. 1940; 中国主要植物图说•豆科249.图240. 1955; Gillett in Kew Bull. Add. ser. 1: 105. 1958; 海南植物志2: 257. 1965; 中国高等植物图鉴2: 388.图2505. 1972; 台湾植物志3: 305. 1977; Verdc. Man. New. Guinea Leg. 355. 1979; de Kort. et Thijsse in Blumea 30: 134. 1984; Sanjappa in Reinwardtia 10: 237. 1985; Y. Y. Fang et C. Z. Zheng in Act. Phytotax. Sin. 27: 170. 1989.——I. anil Linn. Mant. 272. 1771; DC. Prodr. 2: 225. 1825; Benth. Fl. Hongk. 77. 1861; Forb. et Hemsl. in Journ. Linn. Soc. Bot. 23: 155. 1886; Dunn et Tutch. in Kew Bull. Add. ser. 10: 65. 1912; Craib in Not. Bot. Gard. Edinb. 8: 69. 1913; Gagnep. in Lecomte, Fl. Gen. Indo-Chine 2: 427. 1916.
直立灌木或亚灌木，高0.8-1.5米；少分枝。茎灰绿色，有棱，被平贴丁字毛。羽状复叶长5-10厘米；叶柄长约1.5厘米，叶轴上面有槽，被丁字毛；托叶钻形，长达4毫米；小叶5-7 (-9)对，对生，长椭圆形或倒披针形，长1-4厘米，宽5-15毫米，先端急尖，稀圆钝，基部阔楔形或近圆形，上面绿色，密被丁字毛或脱落近无毛，下面淡绿色，被平贴丁字毛。总状花序呈穗状，长2-3厘米；总花梗极短或缺；苞片线形，长约2毫米，被粗丁字毛，早落；花萼钟状，长约1.5毫米，外面有毛，萼齿宽短，约与萼筒等长；花冠红色，旗瓣倒阔卵形，长4-5毫米，外面密被毛，有瓣柄，翼瓣与龙骨瓣等长，龙骨瓣有距，被毛；花药球形，顶端具短尖头，无髯毛；子房在腹缝线上密被毛。荚果镰状弯曲，长1-1.5厘米，紧挤，下垂，被毛，有种子6-8粒；种子短圆柱状，两端截平，干时褐色。花期3-5月，果期6-10月。
江苏、浙江、福建、台湾、广东、广西、云南有栽培。生于低海拔山地路旁、山谷疏林、空旷地、田野沟边及海滩沙地。原产热带美洲，现广布于世界热带地区。
叶可提取蓝靛；全草药用，治喉炎。

《云南植物志》|| 蝶形花科 Papilionaceae ||木蓝属 Indigofera Linn. ||野青树 Indigofera suffruticosa Mill.

16. 野青树（豆科图说）
Indigofera suffruticosa Mill. (1768); 豆科图说 (1955)*; 图鉴 (1972)*; Kort et Thijsse (1984); 云南种子植物名录 (1984); 方云亿等 (1989); 中国植物志(1994)*.
灌木。茎被平贴丁字毛。羽状复叶长5-10厘米；叶柄长约1.5厘米；小叶5-7（-9）对，对生，长圆形或倒披针形，长1-4厘米，宽5-15毫米，先端急尖，稀圆钝，基部阔楔形或近圆形，上面绿色，密被丁字毛或脱落近无毛，下面淡绿色，被平贴丁字毛。总状花序呈穗状，长2-3厘米；总花梗极短或缺；苞片线形，长约2毫米，被粗丁字毛，早落；花萼钟状，长约1.5毫米，外面有毛，萼齿短宽，约与萼筒等长；花冠红色，旗瓣倒阔卵形，长4-5毫米，外面密被毛，有瓣柄，翼瓣与龙骨瓣等长，龙骨瓣有距，被毛；花药球形，顶端具短尖头，无髯毛；子房在腹缝线上密被毛。荚果镰状弯曲，长1-1.5厘米，紧挤，下垂，被毛，有种子6-8粒；种子短圆柱状，两端截平，干时褐色。花期3-5月，果期6-10月。
产西双版纳；生于山坡疏林或栽培。广西、广东、江苏、浙江、福建、台湾有栽培或逸生。原产热带美洲，现广布于世界热带地区。

《Flora of China》|| Fabaceae || Indigofera ||野青树 Indigofera suffruticosa

27. Indigofera suffruticosa Miller, Gard. Dict., ed. 8. Indigo­fera no. 2. 1768.

野青树 ye qing shu

Shrubs or shrublets, erect, 0.8-1.5 m tall. Stems grayish green, with appressed medifixed symmetrically 2-branched tri­chomes. Stipules narrowly triangular, ca. 4 mm. Leaves 5-10 cm, 11-15(-19)-foliolate; petiole and rachis adaxially grooved, with appressed medifixed trichomes; petiole ca. 1.5 cm; leaflet blades oblong to oblanceolate, 1-4 × 0.5-1.5 cm, abaxially pale green and with appressed medifixed trichomes, adaxially green and with dense appressed medifixed trichomes or glabrescent, base broadly cuneate to rounded, apex acute to rarely rounded. Racemes 2-3 cm, densely flowered; peduncle very short or ab­sent; bracts linear, ca. 2 mm, caducous, abaxially with ap­pressed medifixed trichomes. Pedicel reflexed in fruit. Calyx ca. 1.5 mm, outside hairy; teeth broadly triangular, as long as tube. Corolla red; standard obovate, 4-5 mm, outside with dense brown trichomes; keel as long as wings, hairy. Stamens 3-4 mm; anthers globose, glabrous, apex mucronate. Ovary densely hairy. Legume deflexed and upwardly falcate, 1-1.5 cm, hairy; endocarp blotched. Seeds 6-8, brown, shortly cylin­dric, both ends truncate. Fl. Mar-May, fr. Jun-Oct. 2n = 16, 32.

Cultivated or naturalized in Fujian, Guangdong, Guangxi, Jiangsu, Taiwan, Yunnan, and Zhejiang [native to tropical America; widely cultivated in tropical and subtropical Asia].

Indigofera suffruticosa is cultivated as an alternative to I. tinctoria for the production of the dye indigo.