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Herbarium specimen. Copyright DERM
Acalypha lanceolata Willd.
Willdenow, C.L. von (1806) Species Plantarum Edn. 4 4: 524. Type: J.Burman, Thes. Zeylan.: 205 (1737) t.93,fig.2.
Erect sparsely branched annual herb up to 60 cm tall with cylindrical green stems.
Leaf blades 35-80 x 16-56 mm, petioles 20-80 mm long. Leaf surfaces clothed in hairs. Oil dots readily visible with a lens. Stipules 0.5-4 x ca. 0.1 mm, broad at the base but narrowed to an acuminate tip. Lateral veins 4-5 on each side of the midrib. Margins toothed with 16-22 teeth on each side.
Inflorescence up to 25 mm long, racemes consists of male flowers in the upper part and female flowers in the lower part. Male flowers: Flowers ca. 0.1 mm diam. Tepals about 0.3 mm long. Stamens ca. 0.4 mm long. Female flowers: Flowers ca. 1 mm diam. surrounded by deeply lobed bracts ca. 1.5 mm long. Tepals ca. 0.4 mm long. Ovary densely clothed in hairs. Styles lacinate, ca. 1 mm long. Ovules one per locule.
Distribution and Ecology
Occurs in WA, NT, CYP and NEQ as far south as Proserpine. Altitudinal range from near sea level to 760 m. Grows in vine forest but also in various types of woodland and grassland. Widespread in the palaeotropics including the Philippines and New Guinea.
Becomes a weed of cultivation (Foster 1994).
Herb (herbaceous or woody, under 1 m tall)