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75. Sonchella Sennikov, Bot. Zhurn. 92: 1753. 2007.
小苦苣菜属 xiao ku ju cai shu
Authors: Zhu Shi & Norbert Kilian
Herbs, perennial, of ± saline habitats. Stem erect, ± leafy. Synflorescence narrowly racemiform or paniculiform. Capitula with ca. 10 florets. Involucre cylindric. Outer phyllaries imbricate, gradually longer centripetally with longest ca. 1/3 of inner ones, glabrous; inner phyllaries linear-lanceolate, equal in length, margin scarious. Receptacle naked. Florets yellow. Achene cylindric to fusiform, subcompressed, with 5 main ribs alternating with (1 or)2 slender secondary ribs, apex truncate. Pappus white, caducous.
Two species: N China, Mongolia, E Russia; two species in China.
Sonchella unites Youngia stenoma, the single species of Babcock and Stebbins’s (not validly published) "Y. sect. Stenophytum" (Publ. Carnegie Inst. Washington 484: 42. 1937), and a species formerly treated as Prenanthes angustifolia or Crepis pratensis. They are strikingly similar to each other except for their different synflorescence shape. Sonchella has been confirmed in the molecular phylogenetic analyses of subtribe Crepidinae by J. W. Zhang et al. (in prep.) as being rather distant from Youngia.
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Synflorescence racemiform, branches 1-3(-5) cm, appressed, upper secondary branches not exceeding main axis and primary branches; midvein of inner phyllaries subapically often conspicuously crested or carinate. |
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1 S. stenoma |
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Synflorescence paniculiform, branches 3-10 cm, arcuate-spreading, upper secondary branches exceeding main axis and primary branches; midvein of inner phyllaries subapically inconspicuously crested or plane. |
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2 S. dentata |
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Lower Taxa
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