Flora of the Hawaiian Islands
Dicotyledon Literature for Thevetia peruviana
Wagner et al., 1991; Smith, 1988; Lorence & Wagner, 2020.
   Apocynaceae -- The Dogbane, Milkweed Family Bibliography
      Thevetia peruviana

Common name(s): be-still tree, lucky nut, nohomalie, yellow oleander
General Information
DistributionIn the Hawaiian Islands, naturalized on Midway, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui.

Shrub or small tree, 3‒7 m tall.
Leaves spirally arranged, glabrous, subsessile; blade + coriaceous, adaxial surface lustrous, abaxial surface pale, linear lanceolate, 10‒15 cm long, 0.5‒1 cm wide.
Inflorescences usually a terminal, bracteate cyme of 3–4 flowers, peduncle ca. 1 cm long. Flowers with narrowly triangular calyx lobes 5‒7 mm long; corolla bright yellow, broadly funnelform, the tube and throat 2.7‒3.3 cm long, lobes 3.5‒5 cm long, apex obtuse to truncate.
Fruit brown to black when ripe, rhomboid, flattened, wider than long, 2.5 cm long, 4 cm wide.
Seeds 2(‒4), 1 cm long.
2n = 18, 20, 22.
All parts of the plant are poisonous and contain thevetin (a glucoside).
David Lorence