Images taken on Nahhap motu in Pohnpei on 31 July 2007 by Dana Lee Ling. Plant growing near ground on the base of a coconut tree under dense overhead foliage.
Same plant 29 July 2008. Note bifurcating stems that is typical of psilotum and lycopodium.
PLANTS Profile for Psilotum nudum (whisk fern) | USDA PLANTS
Kingdom Plantae - Plants Subkingdom Tracheobionta - Vascular plants Division Psilophyta - Whisk-ferns Class Psilopsida - Order Psilotales - Family Psilotaceae - Whisk-fern family Genus Psilotum Sw. - whisk fern Species Psilotum nudum (L.) Beauv. - whisk