I’ve decided to post the photograph from what I believe to be accurate orientation as well as the flip; a visit to the image on Flickr will also show it in a horizontal perspective. The strong lines of the image gave me a few minutes of enjoyment as I examined the photo in different orientations, so that was my reason for posting it like this.
Commonly known as amau or ‘ama‘u in Hawaiian (and sometimes known as rasp fern), Sadleria cyatheoides is an endemic to the archipelago. It is a plant of wet habitats that can be found from near sea-level to 2135m (7000 ft.). For a small factsheet about the plant, visit Plants of Hawaii Volcanoes National Park. Many more photographs are available from the Plants of Hawaii site, Sadleria cyatheoides.