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FOC | Family List | FOC Vol. 18 | Scrophulariaceae

30. Rehmannia Liboschitz ex Fischer & C. A. Meyer, Index Sem. Hort. Petrop. 1: 36. 1835.

地黄属 di huang shu

Herbs, perennial. Rhizomes present. Stems erect, simple or branched from base. Basal leaves rosulate, stem leaves alternate and petiolate; leaf blade varying in shape, often hairy, margin toothed or lobed. Inflorescences sometimes scapose. Flowers axillary and solitary or in terminal racemes, pedicellate. Bracteoles present or absent. Calyx 5(-7)-lobed. Corolla purple-red or yellow, tubular; tube slightly curved or straight, dorsiventrally compressed, with 2 plaits from tube base to throat; limb 2-lipped, 5-lobed. Stamens 4, didynamous, rarely 5 and 1 smaller than other 4, included; anthers coherent in pairs, locules fertile. Ovary base with a disc, 2-loculed, rarely 1-loculed; ovules numerous. Stigma 2-lamellate. Capsule with persistent calyx, loculicidal. Seeds minute; seed coat reticulate.

Six species: endemic to China.

Also see post-FOC publication: Li, Xiao-Dong et al. 2011. Taxonomic revision of the genus Rehmannia. Plant Sci. J. 29: 423-431.

1 Flowers with 1 or 2 bracteoles.   (2)
+ Flowers without bracteoles.   (3)
2 (1) Bracteoles narrowly elliptic, pinnately lobed   5 Rehmannia piasezkii
+ Bracteoles subulate   6 Rehmannia henryi
3 (1) Corolla 3-4.5 cm, tube narrow.   (4)
+ Corolla 5.6-7 cm, tube inflated.   (5)
4 (3) Basal leaves persistent; pedicel slender, ascending   1 Rehmannia glutinosa
+ Basal leaves caducous; pedicel stout, erect and subparallel to stem   2 Rehmannia solanifolia
5 (3) Flower including pedicel longer than bract   3 Rehmannia chingii
+ Flower including pedicel equal to or shorter than bract   4 Rehmannia elata

Lower Taxa


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