Vascular plants recorded from Christmas Island by C. R. Long Sixty-three species of vascular plants are recorded for Christmas Island. One known hybrid is noted. Collections of vascular plants from Christmas Island have been made by the following: Dr. Streets, 1873; Mr. Dall, 1873; H. F. Bergman, August 1924; G. P. Wilder, December 1924; H. St. John and F. R. Fosberg, October 1934; H. St. John and C. M. Cooke, Jr., October 1934; F. R. Fosberg, August 1936; F. R. Fosberg and A. M Metraux, August 1936; F. R. Fosberg and E. M. Metroux, August 1936; M. D. Gallagher (RAF Natural History Society), October 1958; D. C. Hamilton, April 1962; and C. R. Long, June and November 1964, June 1965. The specimens, as designated below, are deposited in the United States National Museum (USNM), the B. P. Bishop Museum (BISH) and the University of Hawaii (UH). Pandanaeae Pandanus tectorius Sol. Bergman 32 (BISH). Apparently all of the Pandanus sp. and var. have been introduced to the island. Rougier (1914) mentions the introduction of a taxon which he called P. odoratissimus by the Lewers Company who worked the island for copra. Since the importation of Gilbertese labor species or cultivars from the Gilbert Islands may be expected. The plants observed in the village of London in 1965 were used for plaiting and food according to three informants. Gramineae Cenchrus echinatus L. Hamilton 2 (BISH). Probably introduced after 1936 as Fosberg (1943) does not list this species. This species was observed in 1964 and 1965 in the village of London and near the abandoned military installations on the north side of the island. Digitaria pacifica Stapf. Bergman 7 (BISH), Fosberg 13218, 13231, 13262 (BISH); St. John and Fosberg 17492 (BISH); Long 1850, 1903, 3424, 3470 (UH). Mentioned by Rougier (1914) as "Paragrass". This species has naturalized over the north and southeast portions of the island forming a grassland type vegetation with Lepturus. Probably of nineteenth century introduction. Eleusine indica (L.) Gaertn. Hamilton 17 (BISH); Long 3407 (UH). Probably introduced during the second world war or later as it is not present in earlier collections or mentioned by Fosberg (1943). Naturalized along the northwest portion but not abundant.