Flora of the Hawaiian Islands
Dicotyledon Literature for Ludwigia octovalvis
Wagner et al. 1990, 1999. Literature for Ludwigia octovalvis subsp. octovalvis
Raven 1963. Literature for Ludwigia octovalvis subsp. sessiliflora
Raven 1963. Literature for Ludwigia octovalvis subsp. brevisepala
Raven 1963.
   Onagraceae -- The Evening Primrose Family Bibliography
      Ludwigia octovalvis

Common name(s): false loosestrife, water primrose, alohalua, kamole, kamole lau li`i, kamole lau nui, primrose willow
General Information
DistributionPantropical.In the Hawaiian Islands, indigenous to Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.

Robust, erect to spreading, many branched perennial herbs or shrubs 1-4 m tall, subglabrous to densely villous.
Leaves alternate, blades linear to narrowly ovate, 0.7-14.5 cm long, 0.1-4 cm wide, margins entire, petioles 0-1 cm long.
Sepals 4, (6-)8-13 mm long, petals yellow, 5-16 mm long, stamens 8, those opposite the petals with a white, pubescent, sunken nectary, pollen shed in tetrads, stigma surrounded by the anthers and pollen shed directly on it.
Capsule thin walled, 17-45 mm long, irregularly dehiscent.
Seeds in several indistinct rows per cell, distinct, 0.6-0.8 mm long, the raphe inflated and nearly equal in size to body of seed.
2n = 32*, 48.