The contrast of feature between Gymnospermae and Angiospermae
裸子植物与被子植物的比较特征
Plants of the class Gymnospermae having seeds not enclosed in an ovary.
种子不为子房所包被的裸子植物门。
SOME SPECIMENS OF GYMNOSPERMAE FROM THE LOWER PART OF XIANGSHAN GROUP IN JIANGSU AND ANHUI PROVINCES WITH STUDY ON THEIR CUTICULES
苏皖象山群下部一些裸子植物化石及其表皮构造的研究
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