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Arnebia Forssk.

软紫草属

Description from Flora of China

Ulugbekia Zakyrov.

Plants annual or perennial, bristly or pubescent. Roots frequently containing purple dye. Stems erect or prostrate. Leaves alternate. Cymes bracteate. Flowers often heterostylous. Calyx 5-parted to base, slightly enlarged, base sometimes hardened. Corolla funnelform, usually with hairs outside; tube straight or slightly curved; throat unappendaged; limb usually shorter than tube; lobes spreading. Ovary 4-lobed. Style 2- or 4-branched, each branch terminated with 1 stigma. Gynobase flat. Long-styled flowers with included stamens inserted at middle of corolla tube; style long, slightly exserted. Short-styled flowers with stamens inserted at throat; style shorter, reaching to middle of corolla tube. Nutlets oblique-ovate, tuberculate, adaxially flat or slightly concave; attachment scar at base.

About 25 species: N Africa, Europe, C and SW Asia, Himalaya; six species in China.


 

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