几种挺水植物叶表皮细胞结构的观察

本文对芦竹、水龙、喜旱莲子草、慈菇等4种挺水植物叶的表皮细胞进行了显微观察。这4种挺水植物的根虽然生长在浸水的土壤里，它们的茎、叶仍伸展在空气中。它们的叶的表皮细胞受水的影响不如漂浮植物、浮叶植物和沉水植物叶表皮细胞受水的影响大。这4种挺水植物叶的表皮细胞结构与沉水植物、漂浮植物叶的表皮结构不一样，而和陆生植物叶的表皮细胞结构比较相似，均具有气孔、气孔器，有的植物表皮还长有表皮毛。

OBSERVATION ON EPIDENMIS CELLS OF SERVERAL EMERGING PLANT'S LEAVES

It is well known that the roots of emerging plant grow in soil immersed inwater, but their stems and leaves spread out in air. The epidermis cells of the leaves of 4emerging plants have been observed by the microscope. It is discovered that water can notaffect so obviously the epidermis cells of them as that of floating and submerged plants.Constitution of epidermis cells of these emerging plants is different from that of submergedand floating plants, but similar to that of terrestrial plants. That is to say, stomata andstomatal apparatus exist in epidermis of emerging and terrestrial plants and there areepidermal hair on some epidermis.