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Lemnaceae
Dyer, R.A. (1976) The Genera of southern African flowering plants. Vol. 2 (Monocotyledons). Department of Agricultural Technical Services, Pre
Haigh, A. & Boyce, P. (2012) Araceae Flora Zambesiaca 12(1)
Hepper, F.N. (1973) Lemnaceae Flora of Tropical East Africa
Leistner, O.A. (ed.) (2000) Seed plants of southern Africa: families and genera Strelitzia 10
Mayo, S.J. (1985) Araceae Flora of Tropical East Africa
Perennial, terrestrial, epiphytic or aquatic, herbs; sometimes the whole plant reduced to a minute flat or fleshy body (in the former Lemnaceae). Leaves alternate, 1-many, petiolate; petiole usually with a basal sheath; lamina simple or variously lobed. Inflorescence pedunculate, consisting of a fleshy ± cylindric spadix subtended by, or enclosed within, a sometimes showy spathe; or in the former Lemnaceae borne in a lateral cavity of the plant body or within lateral pouches. Spadix either uniform with bisexual flowers or monoecious with female flowers at base and male above; sterile flowers often present in various arrangements, sometimes forming a sterile apex. Bracts 0. Flowers minute, sessile; perianth cup-like or composed of 4-9 free or connate segments. Stamens opposite perianth segments, free or connate. Ovary usually superior, 1-many-locular, each loculus with 1-many ovules; stigma (sub)sessile. Fruit a 1-many-seeded berry, these often brightly coloured or a utricle in the former Lemnaceae. Worldwide: c.116 genera and over 3,300 species, mostly tropical and subtropical with a few temperate. DRC: 1 genus and 1 taxon. |
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Arisaema C. Martius | Description |
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