用掃描電子顯微鏡研究蕨類植物之孢子——七、瘤足蕨科

Scanning Electron Microscopical Studies on the Spores of Pteridophytes. VII. The Family Plagiogyriaceae

The spores of nine taxa of Formosan Plagiogyria arc studied by scanning electron microscope. They are found to have trilete spores of medium size (30-36µ × 38-65µ, in polar × equatorial diameters), mostly with rounded or hemispherical processes, and with raised laesurae having thin or thick margos. Based upon sculptine ornamentations five major types of spores can be discerned. A key to the taxa based on palynological data alone is given. Comparison with other species of Plagiogyria found elsewhere are also made. Possible use of spore characteristics in species differentiation and the course of the development of the perispore are discussed. Some outstanding potential of the inherent capacity of scanning electron microscope in palynological studies are pointed out.