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NTBG Plant Name:
Pittosporum kauaiense
Barcode:
PTBG1000012423
Specimen ID:
055431
Collector ID:
11424
Collector Name:
K. R. Wood
Collection Date:
August 4, 2005
Herbarium Name:
PTBG
Observers:
Robin Rice, David Boynton, Mark Query
Region:
Hawaii
Country:
US
Island Group:
HAWAIIAN ISLANDS
Island:
Kauai
State:
HI
County:
Kauai County
Elevation:
640
Locality:
KAUAI: Haupu summit region.
Plant Category:
dicot
Plant Description:
shrub, 2 m tall, moderatley branched, stems gray-brown, leaves glossy yellow-green above, flocculose below, with immature fruit, observed near P. gayanum, uncommon
Habitat:
Open shrubland/herbland with sparse tree cover of Metrosideros polymorpha.
Associated Species:
With Dicranopteris linearis, Cibotium glaucum, Sadleria pallida along with groupings of native trees such as Hedyotis terminalis; Psychotria mariniana; Antidesma platyphyllum var. hillebrandii; Bobea brevipes; Xylosma hawaiiense; Cheirodendron fauriei; Melicope feddei; and Tetraplasandra oahuensis.
Comments:
Upper Summit and Eastern Slopes. The upper summit vegetation of Ha`upu is composed of 95% open shrubland/fernland with a sparse tree cover of primarily Metrosideros polymorpha (‘ohi‘a) scattered throughout. This plant community is approximately 60% native with the remainder composed of non-native invasive species, the most common of which include Asian melastome (Melastoma septemnervium) and Paspalum conjugatum (Hilo grass). ‘Ohi‘a averages around 3m in height with the open shrubland/fernland extending down the gently sloped eastern gulches and ridges on the windward side of the summit. Matting ferns such as Dicranopteris linearis (uluhe) and Diplopterygium pinnatum (uluhe lau nui) dominate this region and other less common pteridophytes include Cibotium glaucum (hapu‘u); Sadleria pallida (‘ama‘u ‘i‘i); Nephrolepis exaltata subsp. hawaiiensis (ni‘ani‘au); Elaphoglossum crassifolium (hoe a Maui); Lycopodiella cernua (wawae‘iole); Sphenomeris chinensis (pala‘a); and Pteridium aquilinum var. decompositum (kilau). Scattered intermittently as single trees or rarely in small 10 m x 10 m groupings are native tree species such as Hedyotis terminalis (manono); Psychotria mariniana (kopiko); Antidesma platyphyllum var. hillebrandii (hame); Bobea brevipes (‘ahakea lau li‘i); Xylosma hawaiiense (maua); Cheirodendron fauriei (‘olapa); Melicope feddei (alani); Tetraplasandra oahuensis (‘ohe mauka); in addition to the sprawling woody climber Freycinetia arborea (‘ie‘ie) and the liana Ipomoea indica (koali ‘awa). These species each compose around 1% to 5% of the community. Sedges and grasses make up around 10% of the cover on the very top and increase along the moderately sloped ridges and gullies on the windward eastern slopes and include Machaerina angustifolia (‘uki); Machaerina mariscoides subsp. meyenii (‘ahaniu); and occasionally Rhynchospora sclerioides (kuolohia) and Eragrostis variabilis (kawelu). The very common sub-shrub Bidens valida (ko‘oko‘olau) can be seen throughout the summit and its windward eastern gulches and is also a common component on the north facing cliffs and slopes. Additional noteworthy species occasionally observed on the top of Ha`upu and its eastern windward slopes include: Cyanea fissa (haha); Cyanea hirtella (haha); Dubautia laxa subsp. pseudoplantaginea (na‘ena‘e pua melemele); Hibiscus kokio (koki‘o ‘ula); Isodendrion longifolium (aupaka); Melicope waialealae (alani wai); Pittosporum gayanum (ho‘awa); Schiedea perlmanii; Tetraplasandra bisattenuata (‘ohe‘ohe); and Lobelia sp. (see Rare Species section).
Date of Record Creation:
July 1, 2016
Date of Last Update:
April 26, 2022

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