沿阶草亚科植物的叶表皮特征及其在分类学上的意义

中国科学院大学学报

沿阶草亚科植物的叶表皮特征及其在分类学上的意义

戴伦凯, 梁松筠

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-07-10 发布日期:1991-07-10
通讯作者: 戴伦凯

Epidermal Features of Leaves and Their Taxonomic Significance in Subfamily Ophiopogonoideae (Liliaceae)

Dai Lun-Kai, Liang Song-Yun

Received:1900-01-01 Revised:1900-01-01 Online:1991-07-10 Published:1991-07-10
Contact: Dai Lun-Kai

摘要/Abstract

摘要：

本文用扫描电镜和光学显微镜观察研究了沿阶草亚科(Ophiopogonoideae)3属39种1变种叶

片远轴面的表皮特征。认为这些气孔器周围的邻近细胞和表皮细胞特征在分类上有比较重要的意义，主要是：(1)有助于沿阶草属、山麦冬属和球子草属种间和属间种类的鉴别；(2)给这些植物类群的分类提供了有用的性状；(3)对沿阶草属的归类有着比较重要的意义；(4)为探讨沿阶草亚科内3个属间的亲缘关系提供了有益的证据。并认为，这三个属的气孔器邻近细胞和表皮细胞特征的演化趋势为无气孔带类型→无角质突起类型→具角质突起类型(具气孔带)。根据这些特征和外部形态性状认为这三个属的亲缘关系比较密切，应归属于同一个大类群—沿阶草亚科。

关键词: 沿阶草亚科, 沿阶草族, 球子草族, 沿阶草属, 山麦冬属, 球子草属, 叶表皮, 分类学

Abstract:

This paper reports epidermal features of leaves in Ophiopogonoideae. Thirty-nine

species and one variety (29 species, 1 variety in Ophiopogon, 6 species in Liriope, 4 species

in Peliosanthes)were examined under scanning electron microscope. In addition, transections

of stomatal apparatuses of six species (Ophiopogon: 3 species; Liriope: 2 species;

Peliosanthes: 1 species) were made and examined under light microscope.

The stomatal apparatus in Liriope, Ophiopogon and Peliosanthes is of the anomocytic

type. These types of epidermal features of leaves in these genera are recognized: Cuticular

processes type, No cuticular processes type and No stomatal band type. The cuticular

processes type can be further divided into three patterns: Fibrillose, Massive and

Wrinkled-massive. The taxonomic value of the epidermal features of leaves in

Ophiopogonoideae is rather evident. (1)These epidermal features can be used to distinguish

among those species of Ophiopogon, Liriope and Peliosanthes, even in their vegetative state;

(2) The different patterns of cuticular processes are helpful to reasonable classification of

some species in Ophiopogon, (3)They are of great value for recognizing some sections, (4)

These epidermal features of leaves also provide evidence for further discussion on relation-

ships among Ophiopogon, Liriope, and Peliosanthes.

The evolutionary trend of the epidermal features of leaves in Ophiopogonoideae

is No stomatal band type→No cuticular process type(stomatal band)→Cuticular process

type (stomatal band). According to the epidermal features of leaves, flowers and

fruits, Ophiopogon, Liriope and Peliosanthes are closely related, forming a subfamily

Ophiopogonoideae. Ophiopogon is more close to Liriope than to Peliosanthes, and they

should be grouped into the same tribe-Ophiopogoneae. Liriope seems to be more prim-

itive than Ophiopogon. Peliosanthes, which constitutes another tribe of its own-

Peliosantheae, is more advanced than Ophiopogon and Liriope, and it might have been

derived from its ancestor early.

Key words: Ophiopogonoideae, Ophiopogoneae, Peliosantheae, Ophiopogon Liriope, Peliosanthes, leaf epidermis, taxonomy.

戴伦凯, 梁松筠. 沿阶草亚科植物的叶表皮特征及其在分类学上的意义[J]. 中国科学院大学学报.

Dai Lun-Kai, Liang Song-Yun. Epidermal Features of Leaves and Their Taxonomic Significance in Subfamily Ophiopogonoideae (Liliaceae)[J]. .

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