臺灣產大戟科饅頭果屬木材解剖特性之研究

Wood Anatomical Characters of Glochidion (Euphorbiaceae) in Taiwan

胡淑惠(Shu-Hui Hu) ； 呂福原(Fu-Yuan Lu) ； 鄧書麟(Shu-Lin Deng)

《中華林學季刊》 38卷2期 (2005/06) Pp. 179-192

https://doi.org/10.30064/QJCF.200506.0004

摘要

大戟科為雙子葉植物中的大科之一，主要分佈於熱帶及亞熱帶地區，台灣原生者有27屬。其中饅頭果屬主要分佈於亞洲，少數分佈於美洲、非洲，共約有300種，本研究係針對臺灣產饅頭果屬9種分類群生長正常之木材，以木材切片法及纖維解離法進行木材解剖特徵之研究與分析，經由歸群分析建立樹狀圖，以顯示各分類群間之相互關係。歸群分析結果可將本屬植物區分為二大節與九群，此結果與傳統分類之結果大致吻合，即多雄蕊節者包括赤血仔、披針葉饅頭果及錫蘭饅頭果，而饅頭果節者包括裹白饅頭果、高士佛饅頭果、卵葉饅頭果、菲律賓饅頭果、紅毛饅頭果與細葉饅頭果，證明饅頭果屬乃為一個比較自然的分類群。本文中記述各分類群之一般及各項顯微特徵，並提供檢索表做為鑑定之用。

關鍵字

木材解剖特性 ； 大戟科 ； 饅頭果屬 ； 樹狀圖

並列摘要

The The Euphorbiaceae is one of the core dicotyledon families containing about 300 genera with 8,000 species, mostly tropical and subtropical. The genus Glochidion contains about 300 species, mainly in Asiatic, few in America and Africa. There are 27 genera native to Taiwan. In this paper, wood anatomical characters of 9 native species of Glochidion were studied. Both gross features and microscopic structure were examined and photographed from different sections and macerated materials, descriptions on the general features and microscopic characters of each species were presented. And an identification key was provided. Data were analyzed with cluster method. Interrelationship among groups were also reported. The dendrogram could be grouped in 2 sections and 9 clusters: Sect 1 with Multandrum, G. hirsutum, G. lanceolatum, and G. zeylanicum, and Section 2 with Glochidion, G. acuminatum, G. kusukusense, G. ovatifolium, G. philippicum, G. puberum, and G. rubrum. The systematic classification based on the wood anatomy was highly in compliance with those on the morphological features of plants which suggested that Glochidion is a rather natural genus.

並列關鍵字

Wood anatomical characters ； Euphorbiaceae ； Glochidion ； Dendrogram