Flora of the Hawaiian Islands
Dicotyledon Literature for Heliotropium arboreum
Wagner et al., 1990, 1999.
   Heliotropiaceae Bibliography
      Heliotropium arboreum

Common name(s): tree heliotrope
General Information
DistributionNative to tropical Asia, Madagascar, tropical Australia, and Polynesia.In the Hawaiian Islands, naturalized on Kure, Midway, Pearl and Hermes, Lisianski, Laysan, French Frigate Shoals, Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.
















Habit
Small trees 1-5 m tall.
Leaves
Leaves alternate but appearing whorled, fleshy, oblanceolate to obovate, 10-20 cm long, 3.5-9 cm wide, densely silky pubescent, apex obtuse, base attenuate.
Flowers
Flowers sessile in stiff, paniculate, scorpioid cymes usually 6-8 cm long; calyx lobes oblong to orbicular, ca. 1.5 mm long, densely silky strigose; corolla white, ca. 2.5-3.3 mm long, the tube short, 1.5-2 mm long, the lobes elliptic; stamens slightly exserted.
Fruit
Fruit white, fleshy, globose, ca. 4 mm in diameter, glabrous.