Geniostoma


Geniostoma is a genus of around 49 species of flowering plants in the family Loganiaceae. They are shrubs or small trees, with inflorescences borne in the axils of the simple, petiolate, oppositely-arranged leaves. The flowers are arranged in cymes, and each is pentamerous.
The name Geniostoma derives from the Greek words wikt:γένειον and wikt:στόμα, referring to the hairs in the corolla tube of some species. The genus is widely distributed across the Pacific Ocean from Japan, Malesia to Australia in the west, and east to the Tuamotu Archipelago; one species is also found on the Mascarene Islands.
The Hawaiian endemic genus Labordia is included in Geniostoma by Plants of the World Online and other authors. The Hawaiian species are commonly known as labordias or as Kamakahala in Hawaiian. These two genera have been grouped together in the family "Geniostomaceae", but are considered by the Angiosperm Phylogeny Group to be part of a wider Loganiaceae.

Species

49 species are accepted.Geniostoma angustifolium – Mascarene IslandsGeniostoma antherotrichum – New GuineaGeniostoma balansanum – New CaledoniaGeniostoma borbonicum – Mascarene IslandsGeniostoma calcicola – Fiji Geniostoma celastrineum – New CaledoniaGeniostoma clavatum – Society Islands Geniostoma cyrtandrae – Hawaiian IslandsGeniostoma degeneri – Hawaiian IslandsGeniostoma densiflorum – New Caledonia and VanuatuGeniostoma erythrospermum – New CaledoniaGeniostoma fagraeoides – Ogasawara IslandsGeniostoma gagnae – Marquesas IslandsGeniostoma gaudichaudii – Hawaiian IslandsGeniostoma glaucescens – New CaledoniaGeniostoma grandifolium – VanuatuGeniostoma hallei – Marquesas IslandsGeniostoma hedyosmifolium – Hawaiian IslandsGeniostoma helleri – Hawaiian IslandsGeniostoma hirtellum – Hawaiian IslandsGeniostoma hosakanum – Hawaiian IslandsGeniostoma huttonii – Lord Howe IslandGeniostoma hymenopodum – Hawaiian IslandsGeniostoma imbricatum – New CaledoniaGeniostoma kaalae – Hawaiian IslandsGeniostoma leenhoutsii – eastern New Guinea and Bougainville IslandGeniostoma lorencianum – Hawaiian IslandsGeniostoma lydgatei – Hawaiian IslandsGeniostoma macrophyllum – FijiGeniostoma mooreanum – New Caledonia Geniostoma novae-caledoniae – New CaledoniaGeniostoma pedunculatum – Mascarene IslandsGeniostoma petiolosum – Lord Howe IslandGeniostoma pumilum – Hawaiian IslandsGeniostoma randianum – New GuineaGeniostoma rapense – Tubuai Islands Geniostoma rarotongense – Cook Islands Geniostoma rupestre – Taiwan and Malesia to New Guinea, Australia, and the western Pacific
  • * Geniostoma rupestre var. australianum
  • * Geniostoma rupestre var. crassifolium
  • * Geniostoma rupestre var. glaberrimum
  • * Geniostoma rupestre var. hoeferi
  • * Geniostoma rupestre var. lasiostemon
  • * Geniostoma rupestre var. ligustrifolium – hangehange
  • * Geniostoma rupestre var. rouffaeranum
  • * Geniostoma rupestre var. rupestre
  • * Geniostoma rupestre var. solomonense
  • * Geniostoma rupestre var. thymeleaceum Geniostoma stipulare Geniostoma sykesii – Cook IslandsGeniostoma tinifolium Geniostoma trichostylum Geniostoma triflorum Geniostoma umbellatum Geniostoma venosum Geniostoma vestitum Geniostoma waialealae Geniostoma waiolani
  • ''Geniostoma weinlandii''