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Euphorbia rockii
Also called Koolau Range Sandmat, Rock's Broomspurge
Euphorbia rockii (syn. Chamaesyce rockii) is a rare species of flowering plant in the euphorb family known by the common names Koolau Range sandmat and Rock's broomspurge. It is endemic to Oʻahu, Hawaii, where it is known only from the Koʻolau Mountains. There are 200 to 300 plants remaining. Like other Hawaiian euphorbs, this plant is known locally as ʻakoko.
The remaining plants exist in fewer than 10 subpopulations on the peaks of the Koʻolau Mountains, where they often grow in wet forests and shrublands. The plant is threatened by the destruction and degradation of its habitat. The main agents of damage to the habitat are feral pigs and non-native plant species such as strawberry guava (Psidium littorale) and Koster's curse (Clidemia hirta).
Marble Canyon spurge · Abd Al Kuri Euphorbia · Euphorbia abdita · Euphorbia abdulghafooriana · Abram's Spurge · Desert Candle · Euphorbia acalyphoides · Greek Spiny Spurge · Euphorbia actinoclada · Pointed Sandmat · Euphorbia adenopoda · Miniature Saguaro
Text excerpted from the Wikipedia article Euphorbia rockii by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
