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(Trematolobelia kauaiensis)

Trematolobelia kauauiensis habit. Photo Credit: Kenneth R. Wood
Description
  • Global Rank: N/A
  • Legal Status: N/A
  • Family: Campanulaceae
  • State: ,HI
  • Nature Serve ID: 142585
  • Date Inducted in National Collection: 08/21/2019

Uunbranched monocarpic shrub up to 1 m tall. Leaves Leaves elliptic or narrowly elliptic. Inflorescence is raceme with 5-10 (rarely 1) with 20-32 pinkish flowers each (Wagner et al. 1999, 2005). 

Participating Institutions
Updates
  • 10/13/2020
  • Propagation Research

Initial viability tests commenced 5 June 2019 and will be monitored every two weeks until either every seed germinates or dies or until one year has elapsed. To date 40% (0.18 s.d.) of seeds sown have germinated (indicated by radicle emergence).

  • 10/13/2020
  • Orthodox Seed Banking

On 6 May 2019 National Tropical Botanical Garden (NTBG) Research Biologist, Kenneth R. Wood, collected fruit from Laau Ridge, Kauai, Hawaii (Metrosideros-Cheirodendron-Dicranopteris montane wet forest). There was only a single fruiting plant present (2 meters tall with single stem) yielding over 16,000 seeds. One-quarter of the seeds are backed up at NLGRP, with 12,000 seeds retained at NTBG. Of these, seeds were divided for real time longevity testing under three separate environmental conditions (relative humidity and temperature).

  • 10/13/2020
  • Orthodox Seed Banking

On 6 May 2019 National Tropical Botanical Garden (NTBG) Research Biologist, Kenneth R. Wood, collected fruit from Laau Ridge, Kauai, Hawaii (Metrosideros-Cheirodendron-Dicranopteris montane wet forest). There was only a single fruiting plant present (2 meters tall with single stem) yielding over 16,000 seeds. One-quarter of the seeds are backed up at NLGRP, with 12,000 seeds retained at NTBG. Of these, seeds were divided for real time longevity testing under three separate environmental conditions (relative humidity and temperature). With funding through Kew Millennium Seed Bank via CPC, we have initiated investigations into ex situ seed storage behavior, specifically with regards to -18C sensitivity.

  • 10/13/2020
  • Seed Collection

On 6 May 2019 National Tropical Botanical Garden (NTBG) Research Biologist, Kenneth R. Wood, collected fruit from Laau Ridge, Kauai, Hawaii (Metrosideros-Cheirodendron-Dicranopteris montane wet forest). There was only a single fruiting plant present (2 meters tall with single stem) yielding over 16,000 seeds. One-quarter of the seeds are backed up at NLGRP, with 12,000 seeds retained at NTBG. Of these, seeds were divided for real time longevity testing under three separate environmental conditions (relative humidity and temperature). Associated species included Leptecophylla tameiameiae, Broussaisia arguta, Coprosma kauensis, Perrottetia sandwicensis, Psychotria hexandra, Nertera granadensis, Astelia argyrocoma, Cyrtandra longifolia, Stenogyne purpurea, Melicope clusiifolia, M. kavaiensis, Myrsine wawraea, M. lessertiana, Kadua affinis, Smilax melastomifolia, Pittosporum gayanum, Vaccinium calycina, V. dentatum, Ilex anomala, Dubautia laxa, D. paleacea, Clermontia fauriei, Lobelia villosa, Trematolobelia kauaiensis, Gahnia vitiensis, var. kauaiensis, Cibotium menziesii, C. glaucum, Sadleria pallida, S. cyatheoides, Dryopteris glabra, Athyrium microphyllum, terrestrially dominated by Peperomia hesperomannii with a great diversity of bryophytes. Threats include Pigs, Hedychium gardnerianum, Juncus planifolius, Sacciolepis indica, Andropogon glomerata, Rubus rosifolius, R. argutus, Ageratum conyzoides, Erechtites valerianifolia, Conyza bonariensis, Emilia fosbergii, Erigeron karvinskianus, Youngia japonica, Sphaeropteris cooperi, Clidemia hirta.

Dustin Wolkis
  • 09/03/2019

On 6 May 2019 National Tropical Botanical Garden (NTBG) Research Biologist, Kenneth R. Wood, collected fruit from Laau Ridge, Kauai, Hawaii (Metrosideros-Cheirodendron-Dicranopteris montane wet forest). There was only a single fruiting plant present (2 meters tall with single stem) yielding over 16,000 seeds. One-quarter of the seeds are backed up at NLGRP, with 12,000 seeds retained at NTBG. Of these, seeds were divided for real time longevity testing under three separate environmental conditions (relative humidity and temperature).

Associated species included  Leptecophylla tameiameiae, Broussaisia arguta, Coprosma kauensis, Perrottetia sandwicensis, Psychotria hexandra, Nertera granadensis, Astelia argyrocoma, Cyrtandra longifolia, Stenogyne purpurea, Melicope clusiifolia, M. kavaiensis, Myrsine wawraea, M. lessertiana, Kadua affinis, Smilax melastomifolia, Pittosporum gayanum, Vaccinium calycina, V. dentatum, Ilex anomala, Dubautia laxa, D. paleacea, Clermontia fauriei, Lobelia villosa, Trematolobelia kauaiensis, Gahnia vitiensis, var. kauaiensis, Cibotium menziesii, C. glaucum, Sadleria pallida, S. cyatheoides, Dryopteris glabra, Athyrium microphyllum, terrestrially dominated by Peperomia hesperomannii with a great diversity of bryophytes. Threats include Pigs, Hedychium gardnerianum, Juncus planifolius, Sacciolepis indica, Andropogon glomerata, Rubus rosifolius, R. argutus, Ageratum conyzoides, Erechtites valerianifolia, Conyza bonariensis, Emilia fosbergii, Erigeron karvinskianus, Youngia japonica, Sphaeropteris cooperi, Clidemia hirta.


Initial viability tests commenced 5 June 2019 and will be monitored every two weeks until either every seed germinates or dies or until one year has elapsed. To date 40% (0.18 s.d.) of seeds sown have germinated (indicated by radicle emergence).

Dustin Wolkis
  • 08/22/2019

With funding through Kew Millennium Seed Bank via CPC, we have initiated investigations into ex situ seed storage behavior, specifically with regards to -18C sensitivity.

Dustin Wolkis
  • 08/22/2019

In April 2019, NTBG Science and Conservation Intern, Shyla Villanueva was awarded a grant through Kew Millennium Seed Bank via CPC to collect and store seeds.

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Photos
Nomenclature
Taxon Trematolobelia kauaiensis
Authority (Rock) Skottsb.
Family Campanulaceae
CPC Number 38721
ITIS 505565
USDA TRKA2
Common Names Koli‘i
Associated Scientific Names Trematolobelia kauaiensis | Trematolobelia macrostachys var. kauaiensis
Distribution Endemic to Kauaʻi Island (Wagner et al. 1999, 2005).
State Rank
State State Rank
Hawaii
Habitat

Found in Hawaiian wet forests, and occasionally in diverse mesic forests on Kaua'i (Wagner et al. 1999, 2005).

Ecological Relationships

Pollinators
Common Name Name in Text Association Type Source InteractionID

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