臺灣產李亞科(薔薇科)植物木材解剖系統分類

Systematic Wood Anatomy of the Prunoideae (Rosaceae) in Taiwan

黃美惠(Mei-Hui Huang) ； 呂福原(Fu-Yuan Lu) ； 陳周宏(Jou-Horng Chern) ； 林德勳(Te-Hsun Lin) ； 鄧書麟(Shu-Lin Deng) ； 葉若鋆(Ruo-Yun Yeh)

《台灣林業科學》 21卷2期 (2006/06) Pp. 215-231

https://doi.org/10.7075/TJFS.200606.0215

摘要

本研究以臺灣產李亞科(Prunoideae)13種植物木材解剖特徵，經由群團分析建立樹枝圖，供作系統分類之佐證。結果顯示，李亞科木材特徵為：生長輪明顯；導管穿孔單一，穿孔板傾斜，側壁紋孔互生；纖維狀細胞之重紋孔明顯見於徑向壁，未具隔膜；縱向薄壁細胞1~3個聚生，離管或部分圍管；木質線分單列與多列兩型，具異性Ⅰ型及Ⅱ型。經群團分析結果，可將李亞科明顯區分為2屬，即扁核木屬(Prinsepia)和李屬(Prunus)；可分為10種，其中墨點櫻桃(Prunus phaeosticta (Hance) Maxim. var. phaeosticta)和冬青葉桃仁(Prunus phaeosticta (Hance) Maxim. var. ilicifolia Yamam.)確為一種，白花山櫻(Prunus takasagomontana Sasaki)與太平山櫻(Prunus transarisanensis Hay. f. taiheiensis Suzuki)一同併入阿里山櫻(Prunus transarisanensis Hay. var. transarisanensis)中，為種下之分類群，新增之品種為白花山櫻(Prunus transarisanensis Hayata var. takasagomontana (Sasaki) Lu, Huang et Linn. stat. nov.)。本文中記述各分類群之一般及顯微特徵，並提供檢索表作為鑑定之用。

關鍵字

木材解剖 ； 臺灣產李亞科植物 ； 群團分析

並列摘要

In this study, 13 species of Prunoideae plants in Taiwan were studied. The wood anatomical characters were analyzed with the cluster method to provide systematic evidence. Results showed that the general wood anatomical characters of the Prunoideae in Taiwan could be summarized as follows: growth rings distinct; vessels with a simple perforation plate and oblique end walls, intervessel pits alternate; fibrous cells with distinct bordered pits in radial wall and without septate fibers; axial parenchyma 1~3 gathered, apotracheal or scantly paratracheal; and rays both uniseriate and multiseriate, heterogeneous of types Ⅰ and Ⅱ. Results of the cluster analyses showed that the Taiwanese Prunoideae could be distinctly demarcated into two genera: Prinsepia and Prunus, which could be divided into 10 species. Therefore, Prunus phaeosticta var. phaeosticta and P. phaeosticta var. ilicifolia were confirmed to be the same species. Prunus takasagomontana and P. taiheiensis were proposed as being infraspecific taxa of P. transarisanensis, i.e., P. transarisanensis var. takasagomontana and P. transarisanensis f. taiheiensis, respectively. Prunus transarisanensis Hayata var. takasagomontana (Sasaki) Lu, Huang et Linn. stat. nov. is treated as a new form. In this paper, descriptions of the general features and microscopic characters of each species are presented. And a key is also provided for their identification.

並列關鍵字

wood anatomy ； Prunoideae plants in Taiwan ； cluster analysis