Alsinidendron trinerve (also called Three Nerved Alsinidendron) is a species of flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

 in the carnation family, Caryophyllaceae

Caryophyllaceae

The Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactaceae and Polygonaceae...

, that is endemic to island of Oahu

Oahu

Oahu or Oahu , known as "The Gathering Place", is the third largest of the Hawaiian Islands and most populous of the islands in the U.S. state of Hawaii. The state capital Honolulu is located on the southeast coast...

 in Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

. It is a subshrub

Subshrub

A subshrub or dwarf shrub is a short woody plant. Prostrate shrub is a similar term.It is distinguished from a shrub by its ground-hugging stems and lower height, with overwintering perennial woody growth typically less than 10–20 cm tall, or by being only weakly woody and/or persisting...

, reaching a height of 30–80 cm (11.8–31.5 in).

Three-Nerved Alsinidendron inhabits mixed mesic and wet forests on the slopes of the Waianae Range

Waianae Range

Waianae Range is the eroded remains of an ancient shield volcano that comprises the western half of the Hawaiian Island of Oahu...

 at elevations of 900–1230 m (2,952.8–4,035.4 ft). Associated plants include pilo (Coprosma

Coprosma

Coprosma is a genus of 108 species that are found in New Zealand , Hawaii , Borneo, Java, New Guinea, islands of the Pacific Ocean to Australia and the Juan Fernández Is. Many species are small shrubs with tiny evergreen leaves, but a few are small trees and have much larger leaves...

spp.), apeape (Gunnera

Gunnera

Gunnera is a genus of herbaceous flowering plants, some of them gigantic. The genus is the only member of the family Gunneraceae.The 40-50 species vary enormously in leaf size...

 petaloidea), alani (Melicope

Melicope

Melicope is a genus of about 230 species of shrubs and trees in the family Rutaceae, occurring from the Hawaiian Islands across the Pacific to tropical Asia, Australia and New Zealand...

spp.), hāpuu (Cibotium

Cibotium

Cibotium is a genus of eleven species of tropical tree fern—subject to much confusion and revision—distributed fairly narrowly in Hawaii , Southeast Asia , and the cloud forests of Central America and Mexico...

spp.), hame (Antidesma platyphyllum

Antidesma platyphyllum

Antidesma platyphyllum is a species of flowering tree in the leafflower family, Phyllanthaceae, that is endemic to Hawaii. Common names include Hame, Haa, Mehame, Hamehame, Mehamehame, and Haāmaile. It inhabits coastal mesic forests, mixed mesic forests, wet forests, and bogs at elevations of on...

), and māmaki (Pipturus albidus

Pipturus albidus

Pipturus albidus, known as Māmaki in Hawaiian, is a species of flowering plant in the nettle family, Urticaceae, that is endemic to Hawaii. It inhabits coastal mesic, mixed mesic, and wet forests at elevations of...

). It is threatened by habitat loss.