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Diya waulatiya |
| Synonyms: Caesalpinia paniculata (Lam.) Roxb., Caesalpinia paniculata Desf., Guilandina paniculata Lam., Guilandina semina Lour. | |
| Vernacular Name: Sinhala: Diya waulatiya; Eng: Physic nut, grey niker seed | |
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Description: The plant is a prickly shrub or woody vine
reaching a length of 10 m or more. · Leaves: bipinnate, often nearly 1 m long, with the rachis armed with stout, sharp, recurved spines. The pinnae usually number about 10 pairs and are about 20 cm long with a pair of short, sharp spines at the point of attachment of each pair of leaflets. The leaflets also number 10 pairs and are oblong, 2 to 5 cm long and somewhat hairy. · Flowers: yellow, borne in axillary, simple or panicled raceme and about 1 cm long. Calyx deeply cleft, the disk basal, the lobes imbricate, the lowest one larger than the others. Petals spreading, usually clawed, the uppermost smaller than the others. Stamens, 10, free, declinate, anthers versatile. Ovary few-ovuled. · Fruits: pods, oblong 5 to 7 cm in length, inflated and covered with slender spines and contain one or two seeds. The seeds are large, somewhat rounded or ovoid, hairy, grey and shiny. |
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| Propagation: by seeds and cutting. | |
| Part Used: Leaves. | |
| Chemical Constituents: From the CH2Cl2 extract of seed kernels of Caesalpinia crista from Myanmar, five new cassane-type diterpenes, caesalpinins MA-ME (1-5), and three new norcassane-type diterpenes, norcaesalpinins MA-MC (6-8), have been isolated, together with 12 known cassane-type diterpenes, 14(17)-dehydrocaesalmin F, caesaldekarin e, caesalmin B, caesalmin C, caesalmin E, 2-acetoxy-3-deacetoxycaesaldekarin e, 2-acetoxycaesaldekarin e, caesalpinin C, 7-acetoxybonducellpin C, caesalpinin E, norcaesalpinin B, and 6-acetoxy-3-deacetoxycaesaldekarin e. The structures of the isolated compounds were elucidated by analysis of their spectroscopic data. | |
| Uses: Acute and chronic gastritis, gastric ulcer, carbuncle, furuncle. | |
