三种爬山虎叶表皮附属物，海绵组织的疏松程度，叶片特征具有种间差异。
The epidermal appurtenances to three kinds of Parthenodssus tricuspidata, the loose degree of spongy tissue and the characteristics of leaves have varietals diversity.
三叶海棠下表皮有丝状表皮毛附属物，其它试验品种均无。
M. sieboldii have filamentous epidermal hairs under the abaxial, neither are experimental varieties.
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