Flora of Northwestern Pacific

Epipremnum carolinense is a flowering plant. Epipremnum carolinense belongs to the genus Epipremnum, and family Araceae. This species' native range is the Caroline Islands, part of Micronesia and Palau.

Bulbophyllum guamense is a species of orchid in the genus Bulbophyllum. It is native to the islands of Guam and Rota in the Mariana Islands.

Serianthes nelsonii is a large tree endemic to Guam and Rota of the Mariana Islands. Only one mature tree existed on Guam (until November 2024, when it was announced it perished to the consequences of deforestation by the U.S. Military and the 2023 Typhoon Mawar), while 121 mature trees have been identified on Rota since 1984. The tree is found in limestone forests in Rota and Guam. It has bipinnately compound leaves and brush-like flowers with long pinkish filaments. Seedpods contain one to seven smooth brown seeds.

Rhaphidophora guamensis is a climbing plant in the family Araceae that is endemic to the island of Guam in the Mariana Islands.

Horsfieldia palauensis is a species of flowering plant in the family Myristicaceae. It is a tree endemic to Palau.

Eugenia palumbis (Chamorro: agate'lang) is a shrub with edible fruits in the family Myrtaceae. It is endemic to the Mariana Islands, including Guam and the Commonwealth of the Northern Mariana Islands.

Bulbophyllum micronesiacum is a species of orchid in the genus Bulbophyllum.

Bulbophyllum kusaiense is a species of orchid in the genus Bulbophyllum from the Caroline Islands at elevations around 500 meters.

Bulbophyllum hatusimanum is a species of orchid in the genus Bulbophyllum from the Caroline Islands.

Bulbophyllum fukuyamae is a species of orchid in the genus Bulbophyllum.

Parkia parvifoliola is a species of flowering plant in the family Fabaceae that is endemic to Palau.

Metroxylon amicarum (amicarium Latin – 'of friends' also known as the Caroline ivory-nut palm) is a species of flowering plant in the family Arecaceae, endemic to the Caroline Islands. It was named for the Friendly Islands, now Tonga, from where it was first thought to have descended. It is the only species in the Metroxylon genus which is not hapaxanthic.

Dendrobium guamense is a species of epiphytic orchid endemic to Guam and the Commonwealth of the Northern Mariana Islands. It is currently known from nine occurrences totaling 550 individuals across the islands of Guam, Rota, Tinian, and Saipan.

Schleinitzia fosbergii is a species of flowering plant in the legume family known by the common name strand tangantangan. It is native to Guam and other islands in the Mariana Islands chain. This plant is a large shrub generally growing up to 2 meters tall, sometimes becoming treelike and reaching 6 meters. The leaves are made up of a few pairs of pinnae, each of which is lined with several pairs of leaflets up to a centimeter long. The inflorescence is a small globular cluster of tiny white five-petaled flowers which may be bisexual or functionally male. The fruit is a hard, flattened, brown

Parkia korom is a species of flowering plant in the family Fabaceae that is endemic to the Federated States of Micronesia.

Osmoxylon mariannense is a rare species of tree in the family Araliaceae. It is endemic to Rota, one of the Northern Mariana Islands. A 2002 survey found only eight mature trees remaining on the island. A resident of the commonwealth, the tree is federally listed as an endangered species of the United States.

Nesogenes rotensis is a rare species of flowering plant in the family Orobanchaceae. It is endemic to Rota, one of the Northern Mariana Islands in the Pacific Ocean. An inhabitant of the commonwealth, it was federally listed as an endangered species of the United States in 2004. This plant has oppositely arranged lance-shaped leaves and white flowers which occur in the leaf axils. It grows on coastal limestone outcrops with several other plants, including nanaso (Scaevola taccada), talisai ganu (Terminalia samoensis), paodedo (Hedyotis strigulosa), and gausali (Bikkia tetrandra). Little else

Hedyotis megalantha is an herb or small shrub in the Rubiaceae family that is endemic to the volcanic soils of southern Guam. The species was described in 1914 by Elmer Drew Merrill.

Discocalyx megacarpa (Chamorro: ottot) is a species of plant in the family Primulaceae. It is endemic to Guam and the islands of Rota and Saipan within the Commonwealth of the Northern Mariana Islands. It is an understorey shrub, growing to 2 m tall, with lanceolate green leaves, paniculate, cream-coloured, unisexual flowers, and globose, red fruits each containing a single large ribbed seed.

Dischidia puberula is a climbing epiphytic subshrub in the Asclepiadaceae (milkweed) family that is endemic to the Mariana Islands of Guam, Rota and Saipan. There is no known common name.

Dipodium freycinetioides is an orchid species that is native to Palau. The species was formally described in 1937 by Japanese botanist Noriaki Fukuyama. Fukuyama described the species as climbing up trees in Aimeliik on the island of Babeldaob and distinguishes it from D. pictum by the shape of the labellum and flower color. Specimens cited by Fukuyama in his description of D. freycinetioides were collected while producing flowers and fruits in August and September 1932 and 1933. Dipodium freycinetioides is named for its resemblance to the vegetation in the genus Freycinetia.

Callicarpa lamii (Chamorro: hamlag) is a plant in the mint family that is endemic to the Mariana Islands. It is one of two Callicarpa plants endemic to the Mariana Islands, the other being Callicarpa candicans var. paucinervia.

Terminalia carolinensis, commonly known as the ka tree or keima tree, is a tree that grows on the Micronesian islands of Kosrae and Pohnpei. The trees have umbrella shaped crowns and mossy buttressed bases. The trees are found in the Yela Forest. Known as Keima on Pohnpei and Ka on Kosrae, it is used for timber, canoe manufacture, cabinetry, flooring, for medicine and for its edible nuts.

Semecarpus kraemeri, or Chuuk poisontree, is a species of plant in the family Anacardiaceae. It is endemic to the island of Chuuk within the Federated States of Micronesia. A fellow endemic, the great Truk white-eye is thought to depend on this plant for survival.

Hedyotis scabridifolia is an herb or small shrub that is endemic to the volcanic soils of the Mariana Islands of Guam, Rota and Saipan.

Terminalia rostrata is a large tree found only on the Mariana Island of Asuncion. It is a part of the "Terminalia and ravine forest" on the western and southwestern slopes of the island, consisting of scattered Terminalia rostrata in association with Premna serratifolia, Morinda citrifolia, Hibiscus tiliaceus, and Pandanus tectorius. This forest type is described as the best-developed forest in the Mariana Islands north of Saipan, owing to its protection on the lee side of the mountain. The leaves of Terminalia rostrata are most similar to Terminalia catappa, but they have soft hairs similar

Leptecophylla mariannensis is a plant in the Ericaceae family (heath or heathers) and is only known to exist on the tiny island of Alamagan in the Mariana archipelago. The species was first collected in 1933 by Japanese botanist, Ryōzō Kanehira, who described it in 1934 as Cyathodes mariannensis in The Botanical Magazine (Tokyo) (植物學雜誌, Shokubutsugaku zasshi). An isotype fragment, also collected in 1933, was named Styphelia mariannensis, and reportedly found in mossy thickets and open places up to 700 meters elevation. Another specimen was collected from Alamagan in 1934 by Japanese botanist,

Drypetes dolichocarpa (Chamorro: mwelel) is a species of tree in the family Putranjivaceae found in the Mariana Islands.

Syzygium thompsonii (Chamorro: atoto) is an endemic tree of the Mariana Islands of Guam, Rota, and Saipan with a striking appearance due to its abundance of white flowers and edible fruit that grow directly from the trunk. It is related to the Malay apple but bears smaller tart fruit.

Piper guahamense, the Guam pepper (Chamorro: pupulun aniti), is a plant in the family Piperaceae, and is endemic to the Mariana Islands.