Floral morphology and relationships of Kingdonia

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  • キングドニアの花の形態と類縁
  • キングドニアの花の形態と類縁〔英文〕
  • キングドニア ノ ハナ ノ ケイタイ ト ルイエン エイブン

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Abstract

The flowers of Kingdonia uniflora, collected in Sechuan Province of China, were studied morphologically and anatomically. The carpel primordium develops into an obliquely cup-shaped structure and the carpel margin is unsealed at anthesis. A single carpel trace is divided into a dorsal bundle and a ventral bundle, and the latter further divided into 3 divisions. The unitegmic ovule is attached at the middle of adaxial carpel margin and seems to be hemianatropous. Flowers are protandrous and the integument covers only half of the ovule at the time of another dehiscence. Judging from many morphological characters, Kingdonia seems to be not closely related to Circaeaster but to the Renunculaceae, especially Anemoneae.

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