Psilotaceae Psilotum nudum (L.) Beauv. Nake Is., common on wet base of Cocos, No. 3233. Dixon whose collections were from the South Island alone did not collect or record this species. The author was unable to find Psilotum on any other island or islet on the atoll. Nake Island judging by the frequency of Psilotum and Tacca had received more precipitation before the visit of the Pacific Program party than the other portions of the atoll. The more robust mesic Cocos groves also support this obser- vation. FILICES Polypodiaceae Microsorum scolopendrium (Burm. f.) Merr. Reported by Dixon (as Polypodium phymatodes L.); Nake Is., groundcover under Cocos forests, No. 3244; Long Is., north end, under scattered Cocos, No. 3250; South Is., No. 3287. This widespread Pacific fern appears to be thriving even under very dry conditions. SPERMATOPHYTA Pandanaceae Pandanus tectorius Park. Tree 2.5 meters high, at edge of second islet south of Nake Is. (west side), No. 3227. Also observed on Nake Island (see Fig. 1.).—[illegible] Gramineae Lepturus repens (Forst. f.) R. Br. Tufts to 1.5 decimeters high, in coral sand, second is- let south of Long Island, No. 3211; islet northeast of South Island, No. 3221; growing in coral sand several meters above lagoon, common, Nake Island, No. 3236; on east windward side of Nake Island, exposed site, in sand, No. 3238; exposed site, in sand, Long Island, No. 3247; near lagoon shore, fourth is- let north of Bird Island, west side, No. 3259; numerous clumps