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植物研究 ›› 2006, Vol. 26 ›› Issue (5): 513-515.doi: 10.7525/j.issn.1673-5102.2006.05.001

• 论文 •    下一篇

榧属(红豆杉科)一新种——四川榧

易同培1;杨 林1;隆廷伦2   

  1. (1.四川农业大学都江堰分校,都江堰 611830) (2.四川省野生动物资源调查保护管理站,成都 610081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-09-20 发布日期:2006-09-20
  • 通讯作者: 易同培
  • 基金资助:
     

Torreya parvifolia,a new species of the Taxaceae from Sichuan,China

YI Tong-Pei;YANG Lin;LONG Ting-Lun   

  1. (1.Dujiangyan Campus,Sichuan Agricultural University,Dujiangyan 611830) (2.Sichuan Province Wildlife Resource Survey and Conservation Station,Chengdu 610081)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-09-20 Published:2006-09-20
  • Contact: YI Tong-Pei
  • Supported by:
     

摘要: 本新种在种子形态上与云南榧Torreya yunnanensis Cheng et L.K. Fu 相似,不同在于体态为小乔木,高4~5 m,直径10~15 cm;叶较小,长(1.2)1.5~2 cm,宽2.2~3 mm,先端具短尖头,基部圆形或圆楔形,上面仅下部有2条不明显的纵槽,下面2条灰白色气孔带较宽,其宽度与中脉和绿色边带近相等;带假种皮种子倒卵球形或稀近圆球形,较小,直径1.6~2 cm(云南榧2~2.5 cm),易于区别。

关键词: 榧属, 四川榧, 新种, 四川, 中国

Abstract: Torreya parvifolia Yi, L. Yang et Long, a new species of the Taxaceae from Sichuan, China, is described and illustracted. The new species is closely related to Torreya yunnanensis Cheng et L. K. Fu, from which it differs apparently by the shorter and smaller stem, 4~5 m high, 10~15 cm diameter; smaller leaves, (1.2)1.5~2 cm long, 2.2~3 mm broad, acute on the apex with short acumen, rotund or rotundly cuneate at the base, upper surface only below with inconspicuous 2-canaliculates, under surface with 2 stomatic bands broader grey white, nearly as width as mitrib and green side; seeds with arillate obovoid or rare nearly globose, smaller, 1.5~2 cm diameter.

Key words: Torreya Arn., T. parvifolia Yi, L. Yang et Long, new species, Sichuan, China

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