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KMID : 0861020190340060063
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Korea Journal of Herbology
2019 Volume.34 No. 6 p.63 ~ p.70
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Morphological Characteristics, Distribution and Taxonomic Consideration of the Arnebia euchroma and A. guttata
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Song Jun-Ho
Choi Go-Ya
Yang Sun-Gyu
Moon Byeong-Cheol
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Abstract
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Objective : Arnebiae Radix, the roots of Arnebia euchroma (Royle) Johnst. or A. guttata Bunge, is a well-known traditional herbal medicine in East Asia. In the Korean Pharmacopoeia, three authentic species, including two Arnebia and Lithospermum erythrorhizon Sieb. et Zucc. have recognized as a Lithospermi Radix. But, the morphological and taxonomic information of two authentic Arnebia species lacks date since their distribution and difficulty of accessing the natural habitats.
Methods : A full description of the external morphological characteristics of vegetative and reproductive organs in the original plants was carried out using digital calipers and stereoscope. For providing their taxonomic and nomenclatural synonyms, we reviewed various plant checklists and taxonomic literature.
Results : This study provides taxonomic information of A. euchroma and A. guttata based on a morphological examination of authentic plant individuals and field observations. Detailed descriptions of the two Arnebia species, major quantitative and qualitative characteristics, nomenclatural reviews, distribution maps, and lists of voucher specimens examined are provided. The shape of leaves, root length, stem number, calyx length and pubescence as well as corolla color were useful characteristics for identification. Moreover, we confirmed that A. euchroma and A. guttata are clearly heterostylous species.
Conclusion : Our research provides valuable basic information that could be used as quality control for distinguishing between Arnebiae Radix and its adulterants. These results will help in the understanding of authentic plants and also provide the verified materials and voucher information.
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KEYWORD
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Arnebiae Radix, Lithospermi Radix, Arnebia euchroma (Royle) Johnst., Arnebia guttata Bunge, Arnebia tibetana Kurz., Stereoscope, Descriptions
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