Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands

A new endemic species of Geniostoma from Kaua‘i, Hawaiian Islands, is described and illustrated with notes on its distribution, ecology, conservation status, and relationships to other members of the genus. A modification to the existing key for Hawaiian Geniostoma is provided along with a key to al...

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Main Authors: Kenneth R. Wood, David H. Lorence, Warren L. Wagner, Susan Fawcett
Format: Article
Language:English
Published: Pensoft Publishers 2025-06-01
Series:PhytoKeys
Online Access:https://phytokeys.pensoft.net/article/154236/download/pdf/
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author Kenneth R. Wood
David H. Lorence
Warren L. Wagner
Susan Fawcett
author_facet Kenneth R. Wood
David H. Lorence
Warren L. Wagner
Susan Fawcett
author_sort Kenneth R. Wood
collection DOAJ
description A new endemic species of Geniostoma from Kaua‘i, Hawaiian Islands, is described and illustrated with notes on its distribution, ecology, conservation status, and relationships to other members of the genus. A modification to the existing key for Hawaiian Geniostoma is provided along with a key to all Kaua‘i species. Geniostoma imadae sp. nov., differs from its Hawaiian congeners by its unique combination of glabrous stems, leaves and stipules, flowers 3–10 in open, paniculate cymes with peduncles up to 75 mm long, corolla salverform, lobes 9–11 mm long, calyx lobes 5–9 mm long, and capsules 2-valved with beak 2–4 mm long. Population estimates range from 800 to 1250 individuals distributed across the central northern and eastern windward ridges, slopes and valleys of Kaua‘i. Geniostoma imadae represents a new Vulnerable (VU) single-island endemic species.
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institution OA Journals
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publishDate 2025-06-01
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spelling doaj-art-7c3617c2cf5b4ebe92683fc8ae0defe22025-08-20T02:33:15ZengPensoft PublishersPhytoKeys1314-20032025-06-0125719120710.3897/phytokeys.257.154236154236Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian IslandsKenneth R. Wood0David H. Lorence1Warren L. Wagner2Susan Fawcett3National Tropical Botanical GardenNational Tropical Botanical GardenSmithsonian InstitutionUniversity of CaliforniaA new endemic species of Geniostoma from Kaua‘i, Hawaiian Islands, is described and illustrated with notes on its distribution, ecology, conservation status, and relationships to other members of the genus. A modification to the existing key for Hawaiian Geniostoma is provided along with a key to all Kaua‘i species. Geniostoma imadae sp. nov., differs from its Hawaiian congeners by its unique combination of glabrous stems, leaves and stipules, flowers 3–10 in open, paniculate cymes with peduncles up to 75 mm long, corolla salverform, lobes 9–11 mm long, calyx lobes 5–9 mm long, and capsules 2-valved with beak 2–4 mm long. Population estimates range from 800 to 1250 individuals distributed across the central northern and eastern windward ridges, slopes and valleys of Kaua‘i. Geniostoma imadae represents a new Vulnerable (VU) single-island endemic species.https://phytokeys.pensoft.net/article/154236/download/pdf/
spellingShingle Kenneth R. Wood
David H. Lorence
Warren L. Wagner
Susan Fawcett
Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
PhytoKeys
title Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
title_full Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
title_fullStr Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
title_full_unstemmed Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
title_short Geniostoma imadae (Loganiaceae), a new single-island endemic species from Kaua‘i, Hawaiian Islands
title_sort geniostoma imadae loganiaceae a new single island endemic species from kaua i hawaiian islands
url https://phytokeys.pensoft.net/article/154236/download/pdf/
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AT warrenlwagner geniostomaimadaeloganiaceaeanewsingleislandendemicspeciesfromkauaihawaiianislands
AT susanfawcett geniostomaimadaeloganiaceaeanewsingleislandendemicspeciesfromkauaihawaiianislands