Gymnosphaera acrostichoidesGymnosphaera acrostichoides is a species of tree fern found in forests of eastern Indonesia and Papua New Guinea.DescriptionThe trunk is erect and usually tall. Fronds are bipinnate and long. The stipe is slender and covered with spines. It is sparsely covered with medium brown scales. Sori cover most of the underside of fertile pinnules. G. acrostichoides lacks indusia.Distribution and habitatGymnosphaera acrostichoides is native to the Maluku Islands and New Guinea, where it grows in forest and disturbed sites at an elevation of.