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5. Gentiana Sect. Pneumonanthe Gaudin, Fl. Helv. 2: 269. 1828.
龙胆草组 long dan cao zu
Perennials. Rhizomes horizontal to vertical, short, thick, ± fleshy. Stems branching sympodially, with 1 to few erect simple flowering stems but nonflowering basal rosette usually absent. Lowermost stem leaves scalelike. Bracts 2 per flower, well developed. Capsules broadly ellipsoid. Seeds linear to fusiform, winged at both ends; seed coat coarsely reticulate.
Thirty-eight species: North America, Asia, Europe; four species in China.
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| 1 |
Leaf margin and veins on abaxial surface slightly rough |
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76 Gentiana scabra |
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Leaf margin and veins smooth. |
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(2) |
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| 2 (1) |
Flowers solitary (or 2) and terminal (flowers occasionally also solitary in axils of upper leaves); corolla lobes acuminate; stamens inserted at basal part of corolla tube |
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79 Gentiana manshurica |
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Flowers (1-3 to) many in axillary or terminal clusters; corolla lobes obtuse to rounded; stamens inserted at middle of corolla tube. |
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(3) |
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| 3 (2) |
Bracts ovate-lanceolate, 2-3 cm; calyx tube 1.4-1.6 cm |
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77 Gentiana uchiyamae |
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Bracts linear-lanceolate to lanceolate, 0.8-1.2 cm; calyx tube 0.8-1.2 cm |
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78 Gentiana triflora |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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