Rehmannia

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Read about Rehmannia in the Standard Cyclopedia of Horticulture 

Rehmannia (Jos. Rehinann, 1799-1831).Scro-phulariaceae. Phulariaceae. Perennial viscous-villous herbs suitable for the cool greenhouse, grown for the showy bloom.

Stems leafy, branched from the base, either low, scapiform and almost leafless, or (especially in cult.)tall and few-lvd.: lvs.:lvs. alternate, obovate or oblong, coarsely dentate: fls. rather large, borne in terminal racemes and short-pedicelled, brownish purple or pale, the throat intensely colored; calyx ovoid-campanulate, 5-cleft at the top; corolla pilose, slightly incurved, tube rather broadly subventricose, limb obliquely 2-lobed, the lobes spread, the rear or inner one deeply 2-cleft, the front one 3-cleft; stamens 4:caps. broad, partly included in the calyx; seeds numerous.- About 5 species, China and Japan.


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