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油桐属与石栗属叶解剖和花粉形态的比较观察

吴翰   

  1. (华南农业大学,广州)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1985-06-18 发布日期:1985-06-18
  • 通讯作者: 吴翰

Comparative Observation on Leaf Anatomy and Pollen of Vernicia Lour. and Aleurites J. R. et G. Forst.

Wu Han   

  1.  (South China Agriculture University, Guangzhou)
  • Received:1900-01-01 Revised:1900-01-01 Online:1985-06-18 Published:1985-06-18
  • Contact: Wu Han

摘要:

本文作者用光学显微镜和扫描电镜比较观察了石栗属Aleurites J.R.et G.Forst.一
 种和油桐属Vernicia Lour.两种叶的解剖和花粉形态。  前者特点为具刺脊的花粉壁雕纹,表
 皮具外气孔缘突和弯曲角质隆凸的气孔周缘,以及粗结节状纹饰,表皮下无皮下层。后者特
 点为具瘤网脊的花粉壁雕纹,表皮具角质条纹饰,表皮下具一层皮下层,虽然两者的气孔均为平列型以及花粉均为巴豆型。油桐属Vernicia Lour.很久不被承认,这些微观性状提供了另
 一个方面的证据,证明Airy shaw[6]最近又将Vernicia与Aleurites重新分开是正确的。
两属叶片均具有极相似的旱生生态形态,本文称之为圆闪光点orbicular lustrous spot。

关键词: 油桐属, 石栗属, 叶的解剖, 花粉形态

Abstract:

The folial anatomy and pollen of one species of Aleurites and two spe-
cies of Vernicia were studied. The former genus is characterized by the presence of ech-
inolophate sculpture of pollen and a single outer stomatal ledge, curved cuticular ridges
of peristomatal rim as well as large nodular ornamentation on the surface of epider-
mis beneath which there is no hypodermis. The latter one is characterized by the verru-
ca-murate sculpture of pollen and the cuticular striate ornamentation on leaf surface of
epidermis beneath which there is one layer of hypodermis, although they both have pa-
racytic stomata and the Crotonic type of pollen. The genus Vernicia has not been accep-
ted for a long time, but these micromorphological characters show as additional eviden-
ce that recent separation of the two genera by Airy Shaw (1966)[6] is reasonable.
  Both genera possess very similar xeromorphic feature designated here as orbicular
lustrous spot.

Key words: Vernicia, Aleurites, Leaf anatomy, Pollen