Flora of the Hawaiian Islands
Dicotyledon Literature for Ludwigia octovalvis
Wagner et al., 1990, 1999; Lorence & Wagner, 2020. 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 herb or shrub, 1‒4 m tall, subglabrous to densely villous.
Leaves alternate, short-petiolate; blade linear to narrowly ovate, 0.7‒14.5 cm long, 0.1‒4 cm wide, margin entire; petiole 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.
Fruit thin walled, 17‒45 mm long, irregularly dehiscent.
Seeds in several indistinct rows per locule, free from endocarp, 0.6‒0.8 mm long, raphe inflated and nearly equal in size to body of seed.
2n = 32*, 48.
Nancy Khan