Myrsine linearifolia is a rare species of flowering plant in the myrsine family

Myrsinaceae

Myrsinaceae, or the Myrsine family, is a rather large family from the order Ericales. It consists of 35 genera and about 1000 species....

 known by the common name narrowleaf colicwood. It is endemic to 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...

, where it is known only from the island of Kauai

Kauai

Kauai or Kauai, known as Tauai in the ancient Kaua'i dialect, is geologically the oldest of the main Hawaiian Islands. With an area of , it is the fourth largest of the main islands in the Hawaiian archipelago, and the 21st largest island in the United States. Known also as the "Garden Isle",...

. There are 12 populations remaining, for a total of fewer than 200 plants. Like other Hawaiian Myrsine this plant is called kōlea. It is a federally listed threatened species of the United States.

This is a shrub

Shrub

A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...

 or tree

Tree

A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...

 growing up to 8 meters tall. There are narrow leaves and clusters of flowers along the branches. It grows in moist and wet habitat on mountain ridges. It is found alongside other forest plants including 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...

(hame), Broussaisia arguta (kanawao), Chamaesyce remyi (akoko), Cheirodendron fauriei (olapa), Cyanea fissa (haha), Cyrtandra pickeringii (haiwale), Dubautia laxa (naenae pua melemele), Embelia pacifica (kilioe), Freycinetia arborea

Freycinetia arborea

The Ieie is a densely branched, brittle, woody climber in the screwpalm family, Pandanaceae that is endemic to the Pacific Islands. Ieie is found in moist forest on the Hawaiian, Marquesas, Austral, Society, and Cook Islands. It grows into the forest canopy, attaching itself to a host tree using...

('ie 'ie), Kadua affinis (manono), Lobelia kauaiensis (pue), Machaerina angustifolia (uki), Melicope feddei (alani), Melicope waialealae

Melicope waialealae

Melicope waialealae is a species of flowering plant in the Rutaceae family that is endemic to the island of Kauai in Hawaii.-Source:* World Conservation Monitoring Centre 1998. . Downloaded on 12 March 2011....

(alani wai), Perrottetia sandwicensis (olomea), Psychotria hexandra (kopiko), Psychotria mariniana

Psychotria mariniana

Psychotria mariniana, or Kōpiko, is a tree endemic to Hawaii. The plant belongs to the Rubiaceae family, subfamily Rubioidae...

(kopiko), Psychotria wawrae (kōpiko), Sphenomeris chinensis (palaa), and
Syzygium sandwicensis

Syzygium sandwicensis

Syzygium sandwicensis is a species of flowering plant in the myrtle family, Myrtaceae, that is endemic to Hawaii. Common names include Ōhia ha, Hā, and Pāihi. It is normally a large tree, reaching a height of and a trunk diameter of , but is a shrub on exposed ridges...

(ʻŌhiʻa ha).