Cyathea lunulata subsp. vitiensis
Cyathea lunulata is an absolutely magnificent, large tree fern native to forests in the western Pacific, namely in the Mariana and Caroline Islands, the Bismarck Archipelago, the Solomon Islands, Vanuatu, New Caledonia, Fiji, Tonga and Samoa. Its massive trunk can grow to 20 m (67 ft.) tall, the flat, spreading crown of tripinnate fronds with slightly drooping pinnules can reach a diameter of about 10 m (33 ft.). The leafbases are densely covered in pale brown scales. Despite its tropical origin, C. lunulata is surprisingly tolerant of cool conditions though not hardy to much frost. It can handle coastal conditions reasonably well. When small it should be grown in shade, but mature plants develop best in full sun or lightly shaded in drier climates. Cyathea lunulata subsp. vitiensis is native to Fiji and has dark, bluish glaucous leafstalks that are covered in large, pale scales at the base and when young.