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Annonaceae
Sirdavidia solannona Couvreur & Sauquet
Nomenclature
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Tribe: PiptostigmateaeGenus: Sirdavidia
SUMMARY
Tree to 4-10 m tall, 2 to 4 cm in diameter, bark dark brown with patches of green, old branches black, glabrous, young branches black, sometimes pubescent. Petiole 3-4 mm long, 2-3 mm in diameter, glabrous or sparsely pubescent when young, slightly grooved on top, leaf lamina inserted on top. Lamina 20-26 cm long, 4.5 to 9 cm wide, length:width ratio 2.5 to 4.5, narrowly elliptic to elliptic, narrowly ovate to ovate, apex long acuminate, acumen 2-3 cm long, base obtuse, texture coriaceous, young sparsely pubescent to glabrous above, glabrous below, old leaves glabrous above and below, mid rib sunken above, sparsely pubescent when young below, glabrous above, glabrous above and below when old, secondary veins 9-12. Infloresences axillary, on old branches and cauliflorous towards the base of the trunk. Sympodial rachis up to 6 mm long, but sometimes up to 1,5 cm long, densely covered with short appressed hairs, with 0-10 minute densely packed lower bracts densely pubescent brown. Flowering pedicels 2 to 10 mm long, densely covered with short appressed hairs, red, upper bract inserted at base or up to ½ of pedicel, covered with short appressed hairs, red. Flowers androdiecous (?), with 9 tepals in total, 3 sepals and 2 whorls of 3 petals. Sepals 2-3 mm long, 1,5-2 mm wide, length:width ratio 1.5, ovate, apex acute, base truncate, densely covered with short appressed hairs outside, glabrous inside, red. Outer petals 4-10 mm long, 2.5 to 5 mm wide, length:width ratio 2 to 2.5, elliptic, apex acute, base truncate, densely pubescent with appressed hairs outside, densely pubescent with short tomentose hairs inside, deep red. Inner petals 4-9 mm long, 2-4 mm wide, length:width ratio=2 to 2.5, elliptic, apex acute, base truncate, densely pubescent with short tomentose hairs outside, densely pubescent with short tomentose hairs inside along margins, glabrous towards center, deep red. Petals spreading horizontally or recurving backwards at anthesis. In male and hermaphrodite flowers, stamens 16-19, 3-4 mm long, outer ones shorter than inner ones, filament shorter than 0,2 mm, narrow, connective umbonate (tongue shaped), glabrous, bright yellow. In hermaphrodite flowers, carpel one, 4-5 mm long, ca. 1 mm wide, densely pubescent with silvery long appressed hairs, ovules uniseriate, 7 in number, stigma cylindrical coiled, 2-3 mm long, sparsely pubescent towards the top, white cream. Mature fruits not seen, young fruiting pedicel 6 mm long, densely pubescent with appressed hairs. Young monocarp cylindrical, densely pubescent with silvery appressed hairs.