• 식물분류학회지
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• 제45권2호
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• pp.183-191
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• 2015

한국산 박주가리아과(Asclepiadoideae)에 속하는 4속(Cynanchum, Marsdenia Metaplexis, Tylophora)의 14분류군을 대상으로 해부현미경과 주사전자현미경을 이용하여 화분학적 형질을 관찰 및 측정하였다. 연구 결과, 화분괴(pollinia)의 방향, 세립상의 화분괴 표면무늬는 속을 구분하는 유용한 형질로 나타났다. 한편, 기존에 속 이상의 계급에서 주요 화분학적 형질로 여겨지던 화분괴병(translator-arm)이 붙는 화분괴의 위치는 나도은조롱속(Marsdenia)을 제외하고는 뚜렷이 구분되지 않아 속간 한계를 구분하기에는 어려운 것으로 확인되었다. 또한 왜박주가리속(Tylophora)의 왜박주가리(Tylophora floribunda)에서 유일하게 구상체(corpusculum)의 가장자리가 결각상인 것으로 본 연구에서 처음 관찰되었다. 이외에 화분괴, 화분괴병 및 구상체의 양적 형질에서 크기가 다양하게 나타나 종간 분류에 유용한 것으로 조사되었다.

• 식물분류학회지
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• 제48권3호
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• pp.172-184
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• 2018

We examined the floral morphology of 15 taxa of five genera (Cynanchum, Marsdenia, Metaplexis, Tylophora, and Vincetoxicum) in Korean Asclepiadoideae using a stereoscopic and scanning electronic microscope to clarify and describe the floral characteristics. In this study, the corolla and corona types, the types of corona lobes, appendages on the corona lobes, and the apex shape of the style head are considered as diagnostic characteristics at the generic level. The genus Vincetoxicum, which is treated as a synonym of the genus Cynanchum in Korea, is distinguished from Cynanchum by the interstaminal part on the corona, fleshy and mainly triangular or ellipsoid corona lobes, and various corolla colors. In Cynanchum, various corona types have been observed, while Vincetoxicum have similar corona types among the taxa. In addition, the main floral characteristics at the species level were as follows: flowering time, inflorescence, corolla color, trichomes on the corolla surfaces, apex shape of the corona lobe, and trichomes on the ovary. This study presents the taxonomic importance of floral morphology by providing descriptions and diagnostic characteristics among the genera and species investigated.

• 식물분류학회지
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• 제50권1호
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• pp.1-7
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• 2020

Cynanchum L. in the subfamily Asclepiadoideae (Apocynaceae) includes four recognized species on the Korean peninsula, two of which are native to South Korea. However, the species ranges in South Korea are poorly defined. During a field survey, we discovered C. thesioides, previously unrecorded in South Korea, in Gimpo-si, Gyeonggi-do, and found an additional population of C. chinense, for which only one population has been reported in South Korea. The two taxa are considered rare species with extremely restricted distributions in South Korea, especially C. thesioides. We provide fundamental information, including descriptions, images of the habitats and morphological characters, and a taxonomic key for identification and assessments of the conservation status of Cynanchum species in Korea.