用光镜和扫描电镜观察了麦冬〔Ophiopogon japonicus(L.f.)Ker-Gawl.〕、土麦冬(Liriope spicata Lour.)和阔叶土麦冬(L. platyphylla Wang et Tang)叶表皮显微结构、亚显微结构和角质层内表面的形态结构。结果表明,气孔主要分布于麦冬、土麦冬和阔叶土麦冬叶片的下表皮,气孔密度分别为76.4、114.3和99.8个.mm^-2;仅阔叶土麦冬叶片上表皮有少量气孔分布。3种植物的气孔器均不具有副卫细胞,并在叶脉间形成纵向气孔带。表皮细胞长方形,气孔带与非气孔带处表皮细胞的形态和大小差异较明显。麦冬气孔周围的表皮细胞平周壁具明显瘤状突起,导致气孔下陷;土麦冬气孔周围的表皮细胞平周壁呈波浪状突起,使气孔相对下陷;阔叶土麦冬气孔周围的表皮细胞平周壁基本无突起,气孔不下陷。3种植物的叶表皮均有发达的角质层和丰富的蜡质,且蜡质主要分布于下表皮气孔带处。这些结构特征可能与它们所具有的喜阳、耐阴和耐旱等特性有一定的相关性。 

Microscopic structure and submicroscopic structure of leaf epidermis and morphological structure of inner surface of leaf cuticle of Ophiopogon japonicus (L.f.)Ker-Gawl., Liriope spicata Lour. and L. platyphylla Wang et Tang were observed with LM and SEM. The results show that the stomata mainly distribute in lower epidermis of leaf of L. spicata, L. platyphylla and O. japonicus, and the stomata density is 114.3, 99.8and 76.4mm ^{- 2},respectively, but only a few stomata distribute in upper epidermis of L. platyphylla leaf. The stomata apparatus without subsidiary cells form. stomata bands between parallel veins. The shape of epidermis cell is long rectangular, and the shape and size of epidermis cells in stomatalb and are different from that in non-stomata band. The periclinal wall of epidermis cells around stomata on O. japonicus leaf has obviously strumous protuberances, which results in sunken stomata; the periclinal wall of L. spicata has wavyprotuberances and the stomata are sunken relatively; the periclinal wall of L. platyphylla almostly has no protuberances and the stomata are not sunken. The leaf surface of the three species are coated with well developed cuticle and rich wax, and the wax mainly distributes in stomata bands of lower epidermis. These features may relate to the heliophilic character, shade tolerance and drought tolerance of the three species.