Maile-scented Fern (Phymatosorus Grossus) 10,000+ Spores This naturalized ornamental garden plant is native to parts of Oceania and tropical Asia. The fronds emerge from creeping, black or brown-scaled rhizomes and are glossy, dark green to bright green, erect, oval to oblong in shape, and deeply pinnatifid with usually 2 to 10 pairs of pinnate lobes. O hese abundant ferns are mostly terrestrial and grow as a ground cover in disturbed, lower elevation forests, but they can also grow on rocks and trees.