Araceae
Ooia S.Y.Wong & P.C.Boyce
SUMMARY
Small to medium-sized evergreen herbs. Mucigel on root cap, adventitious shoots arising from the root. Stem erect or decumbent, usually more or less condensed. Leaves several; petiole sheath short with long, marcescent triangular ligule; lamina elongate-lanceolate to elliptic or oblonceolate, coriaceous, basally cuneate, apex with tubular mucro; primary lateral veins pinnate, running into distinct marginal vein, secondary laterals and higher order venation parallel-pinnate. Inflorescence solitary per module, emerging orthotropic, maturing campylotropic to anatropic during the onset of anthesis; peduncle subequal to or longer than petiole. Spathe stoutly ellipsoid, not constricted, persistent, pink, gaping at anthesis, apex cuspidate to acuminate. Spadix sessile with ± oblique insertion to shortly stipitate with the stipe adnate to the spathe, sometimes with a robust basal sterile zone (pistillodes) or absent; female flower zone cylindric; pistils free, ovary 1-locular, ovules many, placentae 2-4, basal; stigma ± sessile or elevated on a short style, usually as broad as ovary and more or less contiguous with adjacent ones; male flower zone contiguous with female flower zone, cylindric to ellipsoid, equal in thickness to female zone, obtuse; stamens crowded, minutely hairy to papillate, anthers truncate, connective ± flat; thecae oblong-ellipsoid, dehiscing by apical pore; pollen inaperturate, ellipsoid; appendix absent. Infructescence a cluster of free berries held within the persistent, finally disintegrating spathe; berry obovoid to subcylindric, small, green; seed elongate-ellipsoid to cylindric, with long, curved micropylar appendage, testa slightly costate, embryo elongate, endosperm copious.