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Sapindus oahuensis

PTBG1000091392

087243

9992

K. R. Wood

October 4, 2002

PTBG

BISH

David Boynton

Hawaii

US

HAWAIIAN ISLANDS

Kauai

HI

Kauai County

Waimea District

351

Waimea Canyon, just west of Poo Kaeha,

dicot

tree, 7 m tall, many branched, dark brown trunk, branches strong and spreading, ca 400 trees in area, seed collection

Yes

Sapindus oahuensis-Erythrina sandwicensis lowland dry forest

w/ Metrosideros polymorpha var. glaberrima, Diospyros sandwicensis, Psydrax odorata, Acacia koa, Nesoluma polynesicum, Charpentiera obovata, Rauvolfia sandwicensis, Peperomia blanda var. floribunda, Korthalsella complanata, Alyxia oliviformis

Based on field book, collection date changed from 10/5/2002 to 10/4/2002 - 23 November Tim Flynn K. R. Wood Accession Data NTBG Project: NAT HAW Date: 4-5 Oct 2002 Island: Kaua`i Origin: Waimea Canyon, just west of PooKaehu Elevation: 1100—1200 ft GPS [UTM]: 432664 - 2440826 Species Name: Sapindus oahuensis Collector #: K. R. Wood 9992 Co-Collector: D. Boynton Individual Tag: no Photo: yes Seed/Cuttings/Other: seed Recommendation: Propagate: a few Store: remainder Distribute: upon request Description of Plant: 7 m tall, many branched tree, dark brown trunk, branches strong and spreading Flowers: monoecious Plant/Animal Interaction: none observed Substrate: powdery brown soil with various sized basalt talus Aspect: north Slope: 45? Closure: open to light ca. 50 % of the day Moisture: dry Topography: near canyon bottom Phenology: in flower and fruit Vigor: normal Frequency: ca 400 trees Population Structure: Mature: 95% Immature: 5% Seedling: few observed Population Area: 40,000 sq meters Natural Community: Sapindus oahuensis-Erythrina sandwicensis lowland dry forest Associates: Metrosideros polymorpha var. glaberrima, Diospyros sandwicensis, Psydrax odorata, Acacia koa, Nesoluma polynesicum, Charpentiera obovata, Rauvolfia sandwicensis, Peperomia blanda var. floribunda, Korthalsella complanata, Alyxia oliviformis, Ipomoea sp., Carex meyenii, Bromus sp, Eragrostis variabilis, Microlepia strigosa, Psilotum nudum, Pteridium decompositum, Doryopteris decora, Macrothelypteris torresiana. Adjacent cliffs with Nototrichium sandwicense, Artemisia australis, Bidens sandvicensis, Lipochaeta connata var. acris, Lobelia niihauensis, Schiedea spergulina, Chamaesyce celastroides var. hanapepensis Major Threats: The main threats to this ecosystem include habitat degradation by feral goats, competition with non-native plant taxa such as Grevillea robusta, Melia azedarach, Aleurites moluccana, Hyptis pectinata, Ageratum conyzoides, Kalanchoë pinnata, Rubus rosifolius, Adiantum hispidulum, Abutilon grandifolium, Crotalaria pallida, Triumfetta semitriloba, Stachytarpheta jamaicensis, and fire.

March 23, 2023