| genus = Alectryon
| species = macrococcus
| authority = Radlk.
}}Alectryon macrococcus, known as {{okina}}Ala{{okina}}alahua or Māhoe in Hawaiian, is a species of flowering tree in the soapberry family, Sapindaceae, that is endemic to Hawaii.
Alectryon macrococcus var. auwahiensis has been found growing naturally only (endemic) in Maui, where it grows in Hawaiian tropical dry forests on the south slope of Haleakalā at elevations of {{convert|360|-|1070|m|ft|abbr=on}}.[2][3][4][5] It is threatened by habitat loss.
Alectryon macrococcus var. macrococcus inhabits mesic forests at elevations of {{Convert|365|-|1035|m|ft|-1|abbr=on}} on Kaua{{okina}}i, O{{okina}}ahu, Moloka{{okina}}i and western Maui.[4][5][8][9]These trees can reach {{Convert|11|m|ft|abbr=on}} tall. Their leaves are each made up of oval-shaped, asymmetrical, net-veined leaflets. Variety auwahiensis has leaflets with rusty-red undersides.[10] The fruits contain a seed with a bright red aril. The arils are sweet-tasting and were food for native Hawaiians.[10] The seeds also attract rats, whose consumption of them prevents the plants of this endangered species from reproducing.[10] The black twig borer (Xylosandrus compactus) destroys the twigs.[13]
References
1. ^1 {{Cite web | last1= Bruegmann | first1= M. M. | last2= Caraway | first2= V. | date= 30 April 2003 | url= http://oldredlist.iucnredlist.org/details/full/33574/0 | title= Alectryon macrococcus var. auwahiensis | work= IUCN Red List of Threatened Species | version= 2013, 2, online at www.iucnredlist.org | accessdate= 14 Dec 2013 }}
2. ^1 {{Cite web|url=http://www.state.hi.us/dlnr/dofaw/cwcs/files/Flora%20fact%20sheets/Ale_mac_auw%20plant%20NTBG_OK.pdf |format=PDF |title=ʻAlaʻalahua, mahoe; Alectryon macrococcus var. auwahiensis |work=Comprehensive Wildlife Conservation Strategy |publisher=State of Hawaiʻi |accessdate=14 Dec 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20131103132905/http://www.state.hi.us/dlnr/dofaw/cwcs/files/Flora%20fact%20sheets/Ale_mac_auw%20plant%20NTBG_OK.pdf |archivedate=2013-11-03 }}
3. ^1 {{Cite web | last1= Bruegmann | first1= M. M. | last2= Caraway | first2= V. | date= 30 April 2003 | url= http://oldredlist.iucnredlist.org/details/full/34045/0 | title= Alectryon macrococcus var. macrococcus | work= IUCN Red List of Threatened Species | version= 2013, 2, online at www.iucnredlist.org | accessdate= 14 Dec 2013 }}
4. ^1 {{Cite web | url= http://manoa.hawaii.edu/hpicesu/DPW/2003_MIP/Sec_1/AleMac.pdf | format= PDF | title= Taxon Summary: Alectryon macrococcus var. macrococcus | work= Final Implementation Plan for Mākua Military Reservation, Island of Oʻahu | publisher= University of Hawaii at Manoa | accessdate= 14 Dec 2013}}
5. ^1 2 3 {{Cite book | contribution= Alectryon macrococcus var. auwahiensis | contribution-url= http://www.centerforplantconservation.org/collection/cpc_viewprofile.asp?CPCNum=7620 | title= National Collection of Imperiled Plants - Plant Profiles | work= Center for Plant Conservation | accessdate= 14 Dec 2013 }}
6. ^1 {{Cite web | url= http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Alectryon+macrococcus | title= Comprehensive Report Species - Alectryon macrococcus | work= The Nature Conservancy | accessdate= 14 Dec 2013 }}
7. ^1 2 {{Cite journal | last1= Linney | first1= G. | year= 1987 | title= Nomenclatural and taxonomic changes in Hawaiian Alectryon (Sapindaceae) | journal= Pacific Science | volume= 41 | issue= 1–4 | pages= 68–73 | url= http://hdl.handle.net/10125/1021 | accessdate= 14 Dec 2013 }}
8. ^1 2 {{Cite journal | last1= St John | first1= H. | last2= Frederick | first2= L. | year= 1949 | title= A Second Hawaiian Species of Alectryon (Sapindaceae): Hawaiian Plant Studies 17 | journal= Pacific Science | volume= 3 | issue= 4 | pages= 296–301 | url= http://hdl.handle.net/10125/8938 | accessdate= 14 Dec 2013 }}