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Stephania Japonica Var. Discolor (Blume) Forman Family: Menispermaceae Forman, L.L

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Stephania Japonica Var. Discolor (Blume) Forman Family: Menispermaceae Forman, L.L Australian Tropical Rainforest Plants - Online edition Stephania japonica var. discolor (Blume) Forman Family: Menispermaceae Forman, L.L. (1956) Kew Bulletin 11: 56. Common name: Vine, Tape; Stephania; Snake Vine; Vine, Snake; Tape Vine Stem A slender vine not exceeding a stem diameter of 2 cm. Leaves Leaf blades peltate, about 7-18 x 7-15 cm, petioles about 5-10 cm long. Flowers Male flowers: Inflorescence consists of a number of umbels, each containing seven or eight heads. Scale bar 10mm. © CSIRO Each head contains about 15-17 flowers. Sepals eight, each sepal spathulate, about 1 mm long. Petals four, each petal obtriangular, about 0.6-0.7 mm long. Anthers fused together to form a stalked disk-like structure in the centre of the flower. Anther disk about 2.5 mm diam., and about 1-1.2 mm high, stalk about 1.5-2 mm long. Anthers opening by means of a single slit around the margin of the disk. Female flowers: Inflorescence consists of a number of umbels each containing about five heads. Each head containing 6-10 flowers. Sepals about 1 x 0.5 mm. Petals about 0.8 x 0.7 mm. Stigmas usually three-lobed. Fruit Fruiting carpels usually in groups of 2 to 8 but sometimes solitary. Each carpel about 5-7 x 5-7 mm, laterally compressed, style remnant lateral, close to the base of the fruiting carpel. Endocarps, curled up like a prawn, +/- orbicular, about 4-5.5 mm diam. Surface sculptured. Embryo U-shaped, 10th leaf stage. © CSIRO about 15 mm long, Radicle curved, about 10-11 mm long, longer than the curved cotyledons (4 mm long.) Seedlings Cotyledons linear, about 13-17 x 1-3 mm, venation obscure, longitudinal and parallel. First pair of leaves cordate to triangular or almost orbicular, about 15 mm diam., peltate, petiole about 11 mm long. At the tenth leaf stage: leaf blade cordate to almost orbicular, about 4.5 cm diam., apex obtuse to acuminate, base cordate to truncate, peltate, margin entire to coarsely and sparsely toothed, petiole about 5-8 cm long. Usually five to seven veins, including the midrib, radiating from the point of attachment of the petiole to the leaf blade. Seed germination time 49 to 51 days. Distribution and Ecology Cotyledon stage, epigeal Occurs in CYP, NEQ, CEQ and southwards as far as south eastern New South Wales. Altitudinal germination. © CSIRO range in northern Australia from near sea level to 800 m. Grows in a variety of habitats, frequently in monsoon forest or the drier types of rain forest. Also found in Malesia. Natural History & Notes Roots and tubes of this species are bitter and chemical investigations have shown the presence of a considerable concentration of a large number of alkaloids; more than 20 different alkaloids have been isolated from the plant and identified. Cribb (1981). Synonyms Clypea discolor Blume, Bijdr. fl. Ned. Ind. : 26(1825), Type: Java, Blume s. n. Holo: L. Stephania australis Miers, Contributions to Botany 3: 229(1871), Type: New South Wales, Parramatta, A. Cunningham s. n. Syn: K. Stephania gaudichaudii A.Gray, United States Exploring Expedition (Wilkes Expedition) Botany. Phanerogamia 1: 37(1854), Type: New South Wales, Sydney, U.S. Expl. Exped. s. n. Holo: US. Stephania hernandiifolia (Willd.) Walp., Repertorium Botanices Systematicae 1: 96(1842). Cissampelos hernandiifolia Willd., Species Plantarum 4: 861(1806), Type: India,W. Roxburgh s. n. Holo: B. RFK Code 2534 Copyright © CSIRO 2020, all rights reserved. Web edition hosted at https://apps.lucidcentral.org/rainforest.
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