在爭議上的還有,買麻藤門會是被子植物的旁支,亦或是其他已滅絕的裸子植物之旁支,或同源。 Cycadophyta, Ginkgophyta, Gnetophyta, and Pinophyta (also known as Coniferophyta) phyla are still in existence
and globoids in embryos of seeds from phyla Coniferophyta, Cycadophyta, Gnetophyta, and Ginkgophyta: characteristics of early seed plants. Canadian Journal