大萼球药隔重楼，湖南重楼属(黑药花科)一新变种

Paris fargesii Franch. var. macrosepala, A New Variety of Paris L. (Melanthiaceae) from Hunan, China

摘要:

报道了湖南重楼属(Paris L.)一新变种：大萼球药隔重楼(Paris fargesii Franch.var.macrosepala H.X.Yin&W.X.Rao&L.Zhao)，其与原变种球药隔重楼(P.fargesii Franch.var.fargesii)区别在于外轮花被片极为宽大，长6.5~11.0 cm，宽2.5~4.0 cm,叶-萼长度比常小于2.0(平均1.91)，叶-萼宽度比普遍小于3.0(平均2.86)，内轮花被片较短，2.0~5.3 cm，常平展于外轮花被片之上，药隔凸出部分呈扁平状，具明显裂痕，顶面观呈蝶形或双肾形。

Abstract:

Paris fargesii Franch. var. macrosepala H. X. Yin & W. X. Rao & L. Zhao, a new variety of Paris L. is reported in Hunan, China. It is different from P. fargesii Franch. var. fargesii by its outer tepals extremely broad, 6.5-11.0 cm long, 2.5-4.0 cm wide. The ratio of length of leaf to calyx is usually less than 2.0 (mean of 1.91), and the ratio of width of leaf to calyx is generally less than 3.0 (mean of 2.86). Inner tepals are shorter, 2.0-5.3 cm, often spread above the outer tepals. The free portion of connective is flat, with visible cracks, and the apical view looks like a butterfly or double kidney.