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7. Gentiana Sect. Isomeria Kusnezow, Trudy Imp. S.-Petersburgsk. Obshch. Estetvoisp., Otd. Bot. 24(2): 198. 1894.
匍茎组 pu jing zu
Description from Flora of China
Perennials, with stolons, without well-developed caudices, stout rhizomes, or persistent taproots. Stems branching sympodially; flowering stems arising singly from slender stolons, often creeping and rooting at lower nodes. Inflorescences terminal. Flowers usually sessile, solitary or in few-flowered clusters. Stigma lobes free, recurved, linear or oblong. Seed coat alveolate, with simple and shallow or spongy and complex hexagonal pits.
Eighteen species: North America, Asia; 16 species in China.
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