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題 名 | Sinosenecio sichuanicus (Asteraceae), a New Species from Sichuan, China=中國四川產蒲兒根屬一新種:四川蒲兒根 |
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作 者 | 劉瑩; 楊親二; | 書刊名 | Botanical Studies |
卷 期 | 52:2 2011.04[民100.04] |
頁 次 | 頁219-223 |
分類號 | 377.2215 |
關鍵詞 | 菊科; 染色體數目; 千里光族; 四川蒲兒根; Asteraceae; Chromosome number; Senecioneae; Sinosenecio sichuanicus; |
語 文 | 英文(English) |
中文摘要 | 本文描述了中國四川產蒲兒根屬一新種:四川蒲兒根(Sinosenecio sichuanicus Y. Liu & Q. E. Yang)。本新種在葉片形狀,成熟瘦果通常無冠毛方面與雨農蒲兒根 (Sinosenecio chienii (Hand.-Mazz.) B. Nord.)相似,但以具2-3莖生葉,葉片兩面及葉柄被柔毛,舌片較大(18-20 × 4-5 mm)而與後者相區別。其體細胞染色體數目為2n = 60。本文提供了四川蒲兒根以及雨農蒲兒根的彩色圖版、四川蒲兒根的線繪圖、花部微觀性狀的光鏡照片以及地理分佈圖。 |
英文摘要 | Sinosenecio sichuanicus Y. Liu & Q. E. Yang, a new species from Sichuan, China, is described and illustrated. The new species is similar to S. chienii (Hand.-Mazz.) B. Nord. in the leaf shape and the mature achenes usually epappose, but differs by having 2-3 cauline leaves, the leaf-lamina pubescent on both surfaces, the petioles pubescent, and the rays larger, 18-20 × 4-5 mm. Its somatic chromosome number (2n = 60) is reported here. Photographs of both S. sichuanicus and S. chienii, line drawings, distribution map, and light microscope (LM) microphotographs of floral characters of S. sichuanicus are provided. |
本系統中英文摘要資訊取自各篇刊載內容。