%0 Journal Article %T Two Angiosperm Reproductive Organs from the Early Cretaceous of China
中国早白垩纪被子植物生殖器官 %A Tao Jun-Rong %A Zhang Chuan-Bo %A
陶君容 %A 张川波 %J 中国科学院研究生院学报 %D 1992 %I %X Two fossil reproductive organs of early angiosperms were collected from the Yanji Basin, Jilin Province of China. The assemblage of fossil plants consist mainly of pteridophytes, gymnosperms and a few angiospoermms. The present paper only reports the two reproductive organs of angiosperms. They are Archimagnolia rostrato-stylosa gen.et sp. nov., Eucommioites orientalis sp.nov. The first is a slightly elongated floral axis(receptacle), with about 20 carpels helically arranged. The carpels are free from each other and attenuated into a beak-like structure at the apex, with the base inserted into the receptacle. A com- parison with living plants indicated its close relationship with some members of the Magnoliaceae. The second is a samara, similar to a fruit of the genus Eucommia, narrow-oblong, 2-lobed at the apex with the lobes stigmatic on theinner side. The seed is situated at the middle of fruit, oblong in shape. %K Reproductive organs %K Angiosperm %K Early Cretaceous
生殖器官 %K 被子植物 %K 早白垩纪 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=6D701EBCA602F04674CDB8124C29AAEE&yid=F53A2717BDB04D52&vid=340AC2BF8E7AB4FD&iid=94C357A881DFC066&sid=F27A401E323B6FAD&eid=BA48F0B914ED890A&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=0