Endemics in Family Order

Annonaceae
Guamia
Guamia mariannae

Apocynaceae
Ochrosia mariannensis

Araliaceae
Osmoxylon mariannense

Celastraceae
Maytenus thompsonii

Combretaceae
Terminalia rostrata

Cyathaceae
Sphaeropteris aramaganensis

Ericaceae
Leptecophylla mariannensis

Euphorbiaceae
Claoxylon marianum
Croton saipanensis
Macaranga thompsonii

Fabaceae
Canavalia megalantha
Derris mariannensis
Mucuna pacifica
Rhynchosia calosperma
Serianthes nelsonii

Hemerocallidaceae
Dianella saffordiana

Lamiaceae
Callicarpa lamii

Melastomataceae
Medinilla medinilliana

Myrtaceae
Eugenia bryanii
Eugenia palumbis
Syzygium thompsonii

Oleaceae
Jasminum marianum

Orchidaceae
Bulbophyllum guamense
Dendrobium guamense
Dendrobium oblongimentum
Malaxis alamaganensis
Nervilia jacksoniae
Zeuxine ovata

Phyllanthaceae
Glochidion marianum
Phyllanthus saffordii

Piperaceae
Peperomia mariannensis
Piper guahamense

Poaceae
Digitaria gaudichaudii
Digitaria mezii
Ischaemum longisetum

Potamogetonaceae
Potamogeton marianensis

Primulaceae
Discocalyx ladronica
Discocalyx megacarpa
Maesa walkeri

Pteridaceae
Ceratopterus gaudichaudii

Putranjivaceae
Drypetes dolichocarpa
Drypetes rotensis

Rubiaceae
Hedyotis kanehirae
Hedyotis laciniata
Hedyotis megalantha
Hedyotis scabridifolia
Psychotria andersonii
Psychotria malaspinae

Sapindaceae
Allophylus holophyllus

Solanaceae
Solanum guamense
Solanum mariannense

Thelypteridaceae
Cyclosorus gretheri
Cyclosorus guamensis

Urticaceae
Elatostema stenophyllum


Endemics in Alphabetical Order

Allophylus holophyllus
Bulbophyllum guamense
Callicarpa lamii
Canavalia megalantha
Ceratopterus gaudichaudii
Claoxylon marianum
Croton saipanensis
Cyclosorus gretheri
Cyclosorus guamensis
Dendrobium guamense
Dendrobium oblongimentum
Derris mariannensis
Dianella saffordiana
Digitaria gaudichaudii
Digitaria mezii
Discocalyx ladronica
Discocalyx megacarpa
Drypetes dolichocarpa
Drypetes rotensis
Elatostema stenophyllum
Eugenia bryanii
Eugenia palumbis
Glochidion marianum
Guamia
Guamia mariannae
Hedyotis kanehirae
Hedyotis laciniata
Hedyotis megalantha
Hedyotis scabridifolia
Ischaemum longisetum
Jasminum marianum
Leptecophylla mariannensis
Macaranga thompsonii
Maesa walkeri
Malaxis alamaganensis
Maytenus thompsonii
Medinilla medinilliana
Mucuna pacifica
Nervilia jacksoniae
Ochrosia mariannensis
Osmoxylon mariannense
Peperomia mariannensis
Phyllanthus saffordii
Piper guahamense
Potamogeton marianensis
Psychotria andersonii
Psychotria malaspinae
Rhynchosia calosperma
Serianthes nelsonii
Solanum guamense
Solanum mariannense
Sphaeropteris aramaganensis
Syzygium thompsonii
Terminalia rostrata
Zeuxine ovata


Summary

Included here is the Mariana Islands (also know as the Marianas) in the north-western Pacific. They consists of two subgroups, the Northern Marianas, a group of ten volcanic main islands, currently uninhabited, and the Southern Marianas, a group of five coralline islands (Aguijan, Guam, Rota, Saipan and Tinian). These form part of the larger island group of Micronesia.

Of the endemic vascular plants so far recorded there are about 55 species in 44 genera and 27 families. There is also 1 endemic genus (marked red) but no endemic families. This list has recently been revised by Costion & Lorence (2012).

References

Costion, C. M. & Lorence, D. H. 2012. The Endemic Plants of Micronesia: A Geographical Checklist and Commentary. Micronesica, 43: 51-100.

Fosberg, F. R., Falanruw, M. V. C. & Sachet , M. H. 1975. Vascular Flora of the Northern Marianas Islands. Smithsonian Contributions to Botany. Number 22.

Fosberg, F. R., Sachet, M. H. & Oliver, R. 1979. A Geographical Checklist of the Micronesian Dicotyledonae. Micronesica, 15: 41-295.

Fosberg, F. R. 1984. Phytogeographic comparison of Polynesia and Micronesia. In: Biogeography of the Tropical Pacific (Proceedings of a Symposium). Eds. F. J. Radovsky, P. H. Raven and H. Sohmer. Bishop Museum Special Publication No. 72.

Stone, B. C. 1970-71. The Flora of Guam. Micronesica, 6: 1-659.