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  • 期刊

Begonia kui (sect. Coelocentrum, Begoniaceae), a New Species from Vietnam

越南產秋海棠屬側膜組一新種:麗紋秋海棠

摘要


本文報導秋海棠屬側膜組一新種:麗紋秋海棠(Begonia kui),提供線繪圖與彩色照片以資辨識。麗紋秋海棠與彩紋秋海棠(B. variegata)相似,區別在於葉片先端不呈短漸尖;葉面於脈間區有白色條斑、近葉緣處常有白色斑塊而非呈暗褐色環狀邊;外花被片帶紅色或粉紅色,遠軸面具短柔毛或近於光滑;雄蕊群兩側對稱或近似如此;子房與果實光滑無毛等特徵。該植物於台灣的花市出售,根據越南河內的生態與生物資源研究所Tien Hiep Nguyen教授提供之生態照片,本種植物可能原產於越南太原省。

並列摘要


Begonia kui, a new species of sect. Coelocentrum, is described and illustrated. Begonia kui is somewhat similar to B. variegata Y. M. Shui & W. H. Chen, differing in the leaf apex obtuse or rounded (vs. shortly acuminate); leaf margin with a white maculation (vs. with a dark brown band); inflorescences pilose (vs. glandular-hispid); outer tepals pinkish or reddish (vs. greenish or greenish-yellow), abaxially shortly pilose (vs. glandular-hispid); androecium zygomorphic or nearly so (vs. actinomorphic); and ovaries and fruits glabrous (vs. glandular-hispid). Begonia kui is available from floral markets in northern Taiwan, possibly originated from Thai Nguyen Province in northern Vietnam.

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