Araceae
Colletogyne Buchet
SUMMARY
HABIT : seasonally dormant herbs, tuberous. LEAVES : 1 (-2). PETIOLE : sheath short. BLADE : cordate; primary lateral veins pinnate and also arising from petiole insertion, forming submarginal collective vein, 1-2 marginal veins also present, secondary and tertiary laterals mostly parallel-pinnate, higher order venation reticulate. INFLORESCENCE : 1-3 in each floral sympodium, appearing before or with leaves. PEDUNCLE : shorter than petiole. SPATHE : obovate, not constricted, erect, fully expanded at anthesis, closing later and persisting to fruiting stage, red-spotted on greenish background. SPADIX : fertile to apex, female zone adnate to spathe, female and male zones contiguous. FLOWERS : unisexual, perigone absent. MALE FLOWER : 1-androus, filament conoid, variegated, anther apical-oblique, thecae ellipsoid, dehiscing by slit. POLLEN : inaperturate, spherical, medium-sized (mean 39 µm.), exine spinose, obscurely verruculate between spines, spines long, stout. FEMALE FLOWER : gynoecium surrounded by a cup-like, variegated synandrodium, ovary ovoid-ellipsoid, 1-locular, ovule 1, orthotropous, funicle short, placenta basal, style shortly attenuate, stigma discoid-capitate. BERRY : fusiform, stigma remnant persistent, reddish-spotted. SEED : ellipsoid, testa thin, smooth, embryo with lateral plumule, endosperm absent.