Flora of the Hawaiian Islands
Dicotyledon Literature for Hippobroma longiflora
Wagner et al., 1990, 1999; Lorence & Wagner, 2020.
   Campanulaceae -- The Bellflower Family Bibliography
      Hippobroma longiflora

Common name(s): pua hoku, star-of-Bethlehem
General Information
DistributionOriginally endemic to the West Indies, now naturalized as a weed throughout much of the tropics.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Maui, Hawai`i.

Herb; stems coarse, fleshy, 15‒50(‒80) cm long, glabrous or pubescent.
Leaves with blade 6‒25 cm long, 1.5‒8 cm wide, glabrous or pubescent on the veins, apex obtuse to acute, mucronulate, base decurrent.
Flowers with pedicel erect at anthesis, but declined in fruit, 5‒10 mm long, pubescent; hypanthium 10-nerved, 8‒11 mm long, 3‒5 mm wide, sparsely pubescent; calyx lobes 10‒22 mm long; corolla 7‒15 cm long, pubescent externally, glabrous within; anthers white.
Fruit ellipsoid, 1.8‒2.5 cm long, 1‒1.5 cm wide, pendent.
Seeds light brown to red brown, broadly ellipsoid, terete or slightly compressed, 0.6‒0.8 mm long, reticulate.
2n = 28.
Toxic to livestock; the milky sap contains the alkaloids nicotine and lobeline.
Nancy Khan