Tóm tắt

Background: Identification of scientific name and identification of plant characteristics include : Microsurgery and powder characteristics of stem and leaf, in order to standardize herbal Asclepias curassavica L.. Materials and Methods: Stem and leaf of  A.  curassavica  L.  were collected  in Dakrong  district, Quang Tri province in February of 2016. Results: Powder characteristics of stem: epidermis, parenchyma, starch grains, rectangle sclereids, fiber bundles, crystal cluster of calcium oxalate, scalariform vessels, spiral vessels and pitted vessels. Powder characteristics of leaf: epidermis, parenchyma, stomata, multicellular protective hairs, crystal cluster of calcium oxalate, scalariform vessels,  spiral vessels  and pitted vessels.  Microsurgery of stem: Section slightly rounded. From outside to inside: epidermis, collenchyma  and parenchyma  with some fiber bundles. Phloem has overlap on xylem. The last part is made up of pith. Microsurgery of leaf: Section of leaves nerve has smooth upper nerve and protruding lower nerve. From outside to inside: upper epidermis, collenchyma, parenchyma with phloem and xylem. The last part is pith, lower epidermis bearing many protective hairs. Leaves blade is characterized by crystal cluster of calcium oxalate, stomata and spongy mesophyll. Conclusion: These findings contribute to the testing and identifying standards of herbal A. curassavica L., in order to standardize this herbal

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