Gouania meyenii

Gouania meyenii is a rare species of flowering plant known by the common name smoothfruit chewstick. It is endemic to Hawaii, where it is known only from Oahu and Kauai.[1] It is estimated that there are between 38 and 63 individuals of this species remaining in the wild.[2] It is a federally listed endangered species of the United States.

Gouania meyenii

Critically Imperiled  (NatureServe)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Gouania
Species:
G. meyenii
Binomial name
Gouania meyenii

This is a shrub with stems growing erect or spreading and growing one half to over two meters in length. The leaves have oval blades up to 7.5 centimeters long by 4.5 wide borne on short petioles. The inflorescence is a cyme of several flowers with tiny white petals and slightly larger white sepals no more than 3 millimeters long. The small winged fruit contains shiny brown seeds.[1]

This shrub grows in dry or moist forest and shrubland habitat in the Waianae Mountains of Oahu and Nā Pali Coast State Park on Kauai. It is associated with other plants such as koa (Acacia koa), maile (Alyxia stellata), kookoolau (Bidens torta), lama (Diospyros sandwicensis), aalii (Dodonaea viscosa), and naenae (Dubautia plantaginea).[2]

Threats to this rare species and its habitat include introduced plant species, such as mistflower (Ageratina riparia), silk oak (Grevillea robusta), airplant (Kalanchoe pinnata), lantana (Lantana camara), haole koa (Leucaena leucocephala).[2] Feral pigs and feral goats degrade the habitat.[2] Fire, rockslides, and landslides can also damage populations.[1]

References
  1. Gouania meyenii. The Nature Conservancy.
  2. USFWS. Gouania meyenii Five-year Review. August 2010.


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