Pistillate: Less in number, at the base of the spike; perianth of 3 imbricated leaflets; ovary, 3 uniovulate locules; style, 3 branches which also subdivide.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Female flowers analogous as regards the perianth, with 6-9 sterile stamens.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Each blossom lasts but a single day; the upper portion, withering, leaves the base of the perianth to harden about the ovary and protect the solitary seed.
"Wild Flowers Worth Knowing"
Neltje Blanchan et al