【摘要】 由于植物的泛胚性，叶形与植株轮廓表现出了全息对应关系，即使在不同发育时期，植株轮廓变了，叶形也有相应的变化。蕨叶的异形叶性也不例外，例如未次羽片基部小羽片的变异、间小羽片或间羽片的形成，以及变态叶的相关出现等，也符合全息胚学说。从而，叶在总体形态特征上与整个植株是相似的，叶是整个植株的缩影，即部分变异是整体变异的缩影。更多还原

【Abstract】 The leaf shape and Plant outline have shown holographic corresponding relation, be-cause of pan-embryonic properties of the fossil plants,As an independent individual, namely an ECTWO, a leaf or a leaf1et or a loba constituting a leaf stops its autonomous development at a stage corresponding to the stage of the ontogenesis of the whole plant, its total character will be similar to the whole Plant at this corresponding developmental stage。If the autonomous devel·opment of leaf as a small plant, namely an ECIWO,can reach a stage corresponding to a Iater stage of the ontogenesis of the Plant,then the leaf will be similar in total shape tO the plant at the later stage of ontogenesis. The autonomous developments of different leaves of the same plant may stop at different stages,so they may have different leaf shapes,such as variation of basal pinnule of uItimate pinna,fomation of intercalated pinnule( or intercalated pinna ) and corre-sponding appearance of aphlebia, namely heterophlly of frond which also corresponds with the ECIWO theory。 So a leaf is similar in total morphorgical character to the whole plant,an epitome of the whole plant,that is variation of a part being an epitome of variation of the whole 60dy.更多还原