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Korean J. Pl. Taxon > Volume 33(4); 2003 > Article
Korean Journal of Plant Taxonomy 2003;33(4): 421-433.
doi: https://doi.org/10.11110/kjpt.2003.33.4.421
한국산 팥꽃나무과 잎표피 미세구조의 분류학적 검토
정은희 , 홍석표
The taxonomic consideration of leaf epidermal microstructure in Korean Thymelaeaceae Adans
Eun-Hee Jung, Suk-Pyo Hong
Abstract
To examine the leaf epidermal microstructure, nine species in five genera (Daphne L. - 4 pp., Diarthron Turcz. - 1 sp., Edgeworthia 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 studied taxa were ‘hypostomatic type’and the size range of guard cell was 13.8-34.4×8.7-22.9㎛: the smallest size of stomata was found in Diathron linifolium (15.9±2.6×10.0±1.3㎛), while the largest one was measured to Daphne odora (32.8±1.6×20.7±1.3㎛). The stomatal complex was anomocytic in he 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㎛; the smallest size of epidermal cell was found in Stellera chamaejasme (26.0±1.9㎛), on the other hand the largest one was found in Edgeworthia chrysantha (53.6±3.1㎛). 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 paltelets, 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 linifolium, E. chrysantha, W. ganpi and W. trichotoma), (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.
KeyWords: LM, SEM, Leaf epidermis, Stomatal complex, Epicuticular wax, Trichome, Thymelaeaceae
주요어: 잎 표피, 기공복합체, 표피상납질, 모용, 팥꽃나무과
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