• Korean Journal of Plant Taxonomy
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• v.47 no.3
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• pp.207-221
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• 2017

Thymelaeaceae in Korea includes ten species in five genera (Daphne, Diarthron, Edgeworthia, Stellera, and Wikstroemia). This study investigated the morphology of these species using herbarium specimens and fresh materials obtained during fieldwork to understand the variation level and to delineate each taxon in the family. Our comparative morphological analysis showed that the Korean taxa in Thymelaeaceae were easily distinguished based on their morphologies. It is easy to distinguish Daphne from Wikstroemia when the Korean taxa are considered. However, Daphne genkwa is morphologically similar to Wikstroemia based on the leaf arrangement, pubescence of the leaves, and the ovary shape. The results here suggest that further systematic studies of the Daphne group using more data are necessary.

• Korean Journal of Plant Taxonomy
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• v.33 no.3
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• pp.255-270
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• 2003

Pollen morphology of four genera (Daphne L. - 4 spp., Edgeworthia Meisn. - 1 sp., Wikstroemia Endl. - 2 spp., and Stellera L. 1 sp.), except 1 taxon (Diarthron Turcz. - 1 sp.) in Korean Thymelaeaceae were examined with light (LM) and scanning electron microscopy (SEM). The size of grains ($11.3-60.0{\mu}m$) are varied from small (in Stellera) through medium (in Daphne and Wikstroemia) to large (in Edgeworthia). All studied taxa have monad, spheroidal, pantoporate (10-20) grains. The exine is reticulate, especially a typical "croton pattern" which is comprising rings of more or less trihedral subunits. Each triangular subunit is topped by a single microspinule, and the surface pattern is psilale. In Daphne, three types of subunit arrangement can be recognized; - (1) Type I : subunits are arranged circles and attached to each other or sometimes fused in part, (2) Type II: each subunit is trihedral and isolated distinctly, and (3) Type III: each subunit is isolated, but somewhat vague. Systematic implication of the present pollen data for the Korean Thymelaeaceae is also briefly discussed.

• Korean Journal of Plant Taxonomy
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• v.35 no.2
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• pp.115-127
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• 2005

Two anatomical features of leaves, transverse section of midribs and petioles, were examined for nine species of five genera of Thymelaeaceae, Daphne L. -4 spp., Diarthron Turcz. -1 sp., Edgeworthia Meisn. -1 sp., Stellera L. -1 sp., Wikstroemia Endl. -2 sp., using light microscopy and scanning electron microscopy. In terms of shape of upper side, three types were observed, i.e., flattened, depressed, and raised. Outline of petioles is mostly semi-circular or circular in transverse section, with two distinct wings/weakly developed wings or without wings. Other characters besides anatomical features of leaves such as vascular bundle tissues, crystal, tannin are also described in details. Finally, we briefly discussed the systematic significance of the anatomical features of leaves for identification of Korean Thymelaeaceae.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.60-60
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• 2022

우리나라에 분포하는 팥꽃나무과(Thymelaeaceae) 산닥나무속(Wikstroemia) 식물은 산닥나무[Wikstroemia trichotoma (Thunb.) Makino], 거문도닥나무[W. ganpi (Siebold & Zucc.) Maxim.] 2종이 분포하고 있다. 산닥나무는 낮은 산지의 그늘진 계곡에서 주로 자생하며, 거문도닥나무는 임연부에서 주로 자생하는 것으로 알려져 있다. 현재 우리나라에 남아있는 자생지는 기후변화, 남획 등을 이유로 과거에 비하여 축소되어 유전자원의 현지 내·외 보전이 적극적으로 권장된다. 따라서 본 연구에서는 삼지닥나무, 산닥나무, 거문도닥나무의 생육환경 특성을 파악하여 보존 및 증식을 위한 기초자료로 활용하는 데 그 목적이 있다. 연구 결과, 확인된 자생지는 3지역 7개소로 산닥나무는 순천지역, 영암지역, 거문도닥나무는 고흥지역에 자생하는 것으로 확인되었다. 산닥나무는 해발고도 72-248 m, 사면 방위는 북사면, 동사면, 경사는 30-55°의 급경사지에서 주로 자생하는 것으로 확인되었으며, 방형구(10×10 m) 내 개체수는 8-20 개체가 확인되었다. 거문도닥나무는 해발고도 65-76 m, 사면방위는 동사면, 경사는 20-60°, 개체수는 15-25 개체가 확인되었다. 군집분석은 지표종 분석을 통해 가장 유의한 2개 군집으로 나뉘었으며, 산닥나무는 소나무 군집(Pinus densiflora Sieblod & Zucc.), 거문도닥나무는 곰솔(Pinus thunbergii Parl.) 군집으로 확인되었다. 군집의 안전성, 다양성을 나타내는 척도인 종다양성, 최대종다양도, 균재도 및 우점도지수는 소나무 군집 1.2303, 1.2788, 0.9621, 0.0389, 곰솔 군집이 1.1821, 1.2359, 0.9552, 0.0448로 확인되었다.

• Korean Journal of Plant Taxonomy
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• v.33 no.4
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• pp.421-433
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• 2003

To examine the leaf epidermal microstructure, nine species in five genera (Daphne L. - 4 spp., Diarthron Turcz. - 1 sp., Edgewarthia Meisn. - 1 sp., Stellera L. - 1 sp., Wikstroemia Endl. - 2 spp.) of the Korean Thymelaeaceae were investigated by light microscopy (LM) and scanning electron microscopy (SEM). The stomata of stuo야ed taxa were 'hypostomatic type' and the size range of guard cell was $13.8-34.4{\times}8.7-22.9{\mu}m$: the smallest size of stomata was found in Diathran linifolium ($15.9{\pm}2.6{\times}10.0{\pm}1.3{\mu}m$), while the largest one was measured to Daphne adara ($32.8{\pm}1.6{\times}20.7{\pm}1.3{\mu}m$). The stomatal complex was anomocytic in the most studied taxa, except Daphne kiusiana by having combined with anisocytic together. The shapes of epidermal cells are undulate anticlinal wall. The size range of epidermal cell was $20.7-61.0{\mu}m$; the smallest size of epidermal cell was found in Stellera charnaejasme ($26.0{\pm}1.9{\mu}m$), on the other hand the largest one was found in Edgeworthia chrysantha ($53.6{\pm}3.1{\mu}m$). The well-developed flaky epicuticular waxes can be divided three kinds of pattern - (1) smooth in comparison, not entire platelets and scattered, (2) isolated flake-like platelets, mostly paralleled, sparsely, (3) flake-like platelets, flat, membraneous, protruding from the surfaces at varying angles and densely. Two types of trichome are recognized; (1) Type I: uniseriate trichome of striate surface (D. genkwa, Diarthron linifalium, E. chrysantha, W. ganpi and W. trichotama), (2) Type II: multicellular trichome of papillose surface, uncinated 3-4 nodes (Diathron linifolium). Finally, the systematics significance of the leaf micromorphological features in identification and elucidation of Korean Thymelaeaceae, especially between or within the genera including among the species is also briefly discussed.