Flora of the Hawaiian Islands
Dicotyledon Literature for Solanum mauritianum
Wagner et al., 1990, 1999.
   Solanaceae -- The Nightshade Family Bibliography
      Solanum mauritianum

Common name(s): nightshade, tomato, pua nana honua
General Information
DistributionNative to eastern South America, now widely naturalized in warm temperate regions of the world.In the Hawaiian Islands, naturalized on O`ahu.

Shrubs or small trees 2-4 m tall, branched above to form a rounded canopy, unarmed, all parts densely pubescent with sessile to long-stalked stellate hairs, loose and floccose on young growth.
Leaves paler on lower surface, simple, alternate, elliptic, up to 30 cm long and 12 cm wide on young vigorous growth, usually ca. 18 cm long and ca. 7 cm wide, on mature stems margins entire, apex acuminate, base cuneate, often oblique, petioles 3-9 cm long, each with 1-2 smaller auriculate leaves in axils, these sessile, rounded, sometime absent from weak or distal shoots.
Flowers perfect, actinomorphic, numerous in branched corymbs, peduncles up to 15 cm long to first fork, pedicels 2-3 mm long; calyx tube short, 2-3 mm long, the lobes narrowly triangular, 2-3 mm long; corolla lilac blue with a pale star-shaped area at base, stellate, 1.5-2.5 cm in diameter; stamens 5, inserted low on corolla tube; filaments ca. 1 mm long; anthers oblong, 2-3.5 mm long, opening by terminal pores; ovary densely pubescent; style pubescent in lower part, 5-7 mm long; stigma green, terminal.
Berries dull yellowish, succulent, globose, 1-1.5 cm in diameter, pubescent at least in early stages.
Seeds numerous, flattened, 1.5-2 mm long, testa minutely reticulate.
2n = 24