Stylochaeton pilosus Bogner

Rhizome creeping, 2.5 – 3 cm long (and more?) and 3 – 4 mm in diam. Leaves one or two only; petiole 8 – 12(– 13) cm long and c. 2 mm in diam., with short hairs, sheath 2 – 3 cm long; leaf blade broadly ovate, green above and greyish green underneath, 5 – 7(– 8) × 4 – 5.5(– 6.5) cm (one leaf blade 10 × 7.5 cm, Deighton 3960, K), base cordate, apex shortly cuspidate; venation reticulate, midvein strong, primary lateral veins 4 – 5(– 6) on each side and running towards the apex, second order veins thinner and between the primary ones and forming a net together with the third order veins, blade glabrous on upper side but hairy (pilose) underneath, whole lower side covered with hairs but midvein and primary lateral veins more strongly hairy. Cataphylls 1.3 – 2 cm long, membranaceous. Inflorescence solitary; peduncle short, c. 1 cm long and c. 1.5 mm in diam.; spathe not constricted, 3.8 – 4.2 cm long, broader at base and c. 5 mm in diam., then narrowing towards the apex and ending in a point, upper part of spathe slightly twisted and opening by a lateral slit; spadix c. 1.2 cm long; female zone consisting of only one whorl of 5 – 6(– 7) female flowers, separated from the male zone by a naked axis of c. 2 mm length; male zone cylindric, 6 – 7 mm long and c. 2 mm in diam., apex rounded, densely covered by male flowers. Flowers unisexual; female flowers 3.5 – 4 mm tall, perigone urceolate, c. 3 mm tall and c. 1.5 mm in diam., margin of perigone somewhat thickened and papillose; style and stigma exserted from the perigone; stigma disk-like, c. 0.7 mm in diam., dark coloured; style altogether c. 2 mm long, exserted above the perigone for c. 1.5 mm, c. 0.3 mm in diam.; ovary c. 1 mm in diam.; male flowers with a patelliform perigone, stamens c. 1.2 mm long, filament somewhat wider at base, 0.6 – 0.7 mm long, thecae ellipsoid, c. 0.7 mm long and c. 0.5 mm in diam., opening by a longitudinal slit; pollen ellipsoid, inaperturate, c. 40 μm long and 28 μm wide, exine reticulate. Infructescence with a peduncle 1.8 cm long, without any remnants of the spathe, one specimen (Deighton 3960, K) with two berries only; berry ± globular with a broadly acute apex, c. 5 mm in diam.