台灣鴛鴦湖自然保留區花粉誌（II）

Pollen Flora of Yuenyang Lake Nature Preserve, Taiwan (II)

鴛鴦湖為酸性湖泊，位於台灣北部的自然保留區內。本研究採集該區隸屬十一科二十種植物的新鮮花粉，經處理後，以光學顯微鏡和掃瞄式電子顯微鏡觀察這些花粉的形態。依花粉萌芽口的不同，分為八群：無萌發孔、三至六孔、散孔、三溝、四至七溝、三溝孔、異溝孔和四分體具三孔的花粉。這些結果可作為研究鴛鴦湖湖積物內之花粉，並進而作為重建鴛鴦湖周邊植群史的基本資料。

This study is a supplement to previous report (Chen and Wang, 1999). Yuanyang Lake is an acidic lake situated within a nature preserve in northern Taiwan. The pollen morphology of twenty taxa belonging to eleven families collected from this nature preserve was studied under light microscope and scanning electron microscope in the present study. A total of eight pollen classes was grouped on the basis of the aperture on the pollen wall. They were inaperturate, 3-6-porate, pantoporate, 3-colpate, 4-7- colpate, 3-colporate, heterocolpate and tetrad pollen with monads 3-porate pollen.