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Rhynchoglossum Blume 1826, from Greek rhynchos, beak, and glōssa, tongue. The second part of the name clearly alludes to the broad, tongue-like lower lip of the corolla, the first part perhaps to the narrow corolla tube or to the pointed petal tips.
The type species of Rhynchoglossum: R. obliquum Blume
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線柱苣苔/ 同 蕊 草
Rhynchotechum ellipticum
Rhynchotechum Blume 1826, from Greek rhynchos, beak, and toichos, wall; the meaning is obscure.
The type species of Rhynchotechum: Rhynchotechum parviflorum Blume
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Rhytidophyllum Mart. 1829, from Greek rhytis, rhytidos, wrinkle, phyllon, leaf; alluding to wrinkled and blistered leaves.
The type species of Rhytidophyllum: R. tomentosum (L.) Mart.
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Titanotrichum oldhamii / 台閩苣苔/ 俄 氏 草 .. pic from 中國植物志
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Titanotrichum Soler. 1909, from Greek titanos, lime, chalk, and thrix, hair; means studded with chalk-incrusted hairs.
The type and only species of Titanotrichum:
Titanotrichum oldhamii Soler.
type specimens from: 模式標本取自 台灣淡水
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Đistribution of Rhynchoglossum, Rhynchotechum and Titanotrichum: including SW & S China and Taiwan.
Đistribution of Rhytidophyllum: Caribbean region. Rhytidophyllum is closely related to Gesneria.
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