臺灣博碩士論文加值系統

本研究利用外部形態、花粉形態、細胞學及生態與地理分布等資料，針對臺灣產繖形科 (Apiaceae)天胡荽屬 (Hydrocotyle)植物進行分類研究。研究結果顯示在外部形態上，葉片形態、葉表面被毛形態、葉柄被毛形態、花序生長形式、花序總柄長短、花序中小花數目、果實表面微細形態是種間區別的重要特徵。生長形式、葉片微細形態、葉片大小、地理分布亦可作為分類依據的參考。花粉形態方面，花粉表面紋飾在種間具有差異，亦可作為分類依據的佐證。

細胞學研究方面，本研究共檢視了6個類群的染色體數目。其中，H. javanica (2n=ca. 66)與H. ramiflora (2n=ca. 84)兩個類群檢視結果與前人 (Liu et al., 1961)研究結果不同。阿里山天胡荽 (H. ramiflora)之染色體數目 2n=ca. 84為首度報導。

根據研究結果，將臺灣產天胡荽屬處理為8個種2個變種，共10個分類群。發現一個新的變種大屯山天胡荽 (H. dichondroides var. tatunensis)以及訂正兩個被鑑定錯誤的種類姬天胡荽 (H. delicata)及毛茛葉天胡荽 (H. ×ranunculifolia)，並且依據形態中間型和花粉可染率偏低，推測毛茛葉天胡荽為臺灣天胡荽 (H. batrachium)與大屯山天胡荽 (H. dichondroides var. tatunensis)之天然雜交。發現長期被忽略的兩個類群爪哇天胡荽 (H. javanica)和毛天胡荽 (H. dichondroides var. dichondroides)。確認長期沒有採集記錄的基隆天胡荽 (H. keelungensis)之存在，並將其處理為天胡荽的變種階級H. sibthorpioides var. tuberifera。

The genus Hydrocotyle (Apiaceae) in Taiwan was taxonomically revised based on morphological, palynological, cytotaxonomic, phytogeographical, and ecological studies. Morphology of leaves, vesture of leaf-blades and petioles, inflorescence, length of peduncles, flower number in single umbel, and micro-morphology of fruits are important characters for the classification of Taiwan taxa. Stem form, distribution, sizes of leaf-blade, and micro-morphology of leaves also provide useful application. Palynologically, sexine sculpture shows interspecific difference.

Cytologically, chromosome numbers of six Taiwan Hydrocotyle were counted. The counts of H. javanica (2n=ca. 66) and H. ramiflora (2n=ca. 84) from this study are not congruent with previous study (Liu et al., 1961). The chromosome number 2n=ca. 84 is reported for H. ramiflora from Taiwan for the first time.

As a result, eight species and two varieties, including one new variety - H. dichondroides var. tatunensis, were treated. Two erroneous names, H. benguetensis and H. dichondroides were corrected as H. delicate and H. ×ranunculifolia respectively. A natural hydrid Hydrocotyle ×ranunculifolia, putatively derived from H. batrachium and H. dichondroides var. tatunensis, was recognized based on intermediate morphology and extremely low stainability of pollen grains. The rediscovery of H. javaica and H. dichondroides var. dichondroides, which has been ignored for a long time, is also documented. Based on the re-collection of H. keelungensis, a species has never been collected except the type collection, the author treats it as synonymy of H. sibthorpioides var. tuberifera (Ohwi) Yamazaki.

一、前言........................................................................................................................1
二、材料及方法............................................................................................................8
三、形態特徵................................................................................................................12
四、花粉形態...............................................................................................................39
五、細胞分類...............................................................................................................47
六、生態及地理分布...................................................................................................53
七、分類處理...............................................................................................................60
八、參考文獻...............................................................................................................99

附表目次
表1. 臺灣產天胡荽屬植物學名沿革表....................................................................7
表2. 臺灣產天胡荽屬植物學名與中名對照表.......................................................11
表3. 臺灣產天胡荽屬植物葉片形態研究材料、結果及證據標本資料...............27
表4. 臺灣產天胡荽屬植物果實形態研究材料、結果及證據標本資料................38
表5. 臺灣產天胡荽屬植物花粉形態研究材料、結果及證據標本資料................46
表6. 臺灣產天胡荽屬植物染色體形態研究材料、結果及證據標本資料............52
表7. 毛天胡荽 (H. dichondroides)及姬天胡荽 (H. delicata)之特徵比................68
表8. 毛天胡荽 (H. dichondroides)與大屯山天胡荽 (H. dichondroides var.
tatunensis)之特徵比較..................................................................................74
表9. 臺灣天胡荽 (H. batrachium)、毛茛葉天胡荽 (H. ranunculifolia)、大屯山天胡荽(H. dichondroides var. tatunensis)之特徵比較....................................92

附圖目次
圖1. 臺灣產天胡荽屬植物之生長型......................................................................15
圖2. 臺灣產天胡荽屬植物之葉片形態..................................................................17
圖3. 臺灣產天胡荽屬植物之葉柄形態..................................................................20
圖4. 臺灣產天胡荽屬植物之葉表面微細形態......................................................22
圖5. 臺灣產天胡荽屬植物之花序類型..................................................................29
圖6. 臺灣產天胡荽屬單一花序之形態..................................................................31
圖7. 臺灣產天胡荽屬植物之果實形態及表面微細形態......................................33
圖8. 臺灣產天胡荽屬植物之果實形態及表面微細形態......................................35
圖9. 臺灣產天胡荽屬植物之花粉微細形態..........................................................41
圖10. 臺灣產天胡荽屬植物之染色體......................................................................50
圖11. 臺灣產天胡荽屬植物之地理分布...................................................................55
圖12. 臺灣產天胡荽屬植物 (一)..............................................................................97
圖12. 臺灣產天胡荽屬植物 (二)..............................................................................98

黃增泉、謝長富、黃星凡、楊琇玉 1993 台灣大學植物系標本館日據時期之台灣植物標本採集地點目錄，台灣省立博物館年刊，36: 117-174
黃增泉 1983 高等植物分類學原理。國立編譯館。台北。
王裕發 1996 鴛鴦湖地區植物的花粉型態研究。國立臺灣大學植物研究所碩士論文。
Downie, S. R. and D. S. Katz-Downie. 1996. A molecular phylogeny of Apiaceae subfamily Apioideae: Evidence from nuclear ribosomal DNA internal transcribed spacer sequences. Amer. J. Bot. 83(2): 234-251.
Downie, S. R., D. S. Katz-Downie, and M. F. Watson. 2000. A phylogeny of the flowering plant family Apiaceae based on chloroplast DNA RPL16 and RPOC1 intron sequence : Towards a suprageneric classification of subfamily Apioideae. Amer. J. Bot. 87(2): 273-292.
Elmer, A. D. E. 1909. The genus Hydrocotyle. Leafl. Philipp. Bot. 2: 628.
Erdtman, G. 1952. Pollen morphology and plant taxonomy, Angiosperms. pp. 50-51. Alimquist & Wikseiis, Uppsala.
Hara, H. 1985. Comments on the east Asiatic plants. J. Jap. Bot. 60(5): 129-137.
Hayata, B. 1908. Flora montana Formosae. J. Coll. Sci. Imp. Univ. Tokyo. 25: 101-103.
-------------1912. Hydrocotyle. In Icones plantanum Formosanarum. Vol 2. pp. 49-50. Bureau of Forestry. Taihoku (Taipei). Taiwan.
Heywood, V. H. (Ed.) 1978. Flowering Plants of World. Oxford University Press, Oxford.
Hiroe, M. 1979. Hydrocotyle. Umbelliferae of world. Vol 1. pp. 95-173. Ariake Book Company. Tokyo. Japan.
Hsu, C. C. 1967. Preliminary chromosome studies on the vascular plants of Taiwan. I. Tawania. 13: 117-130.
-------------1968. Preliminary chromosome studies on the vascular plants of Taiwan. I. Tawania. 14: 11-27.
Huang, T. C. 1972. Pollen flora of Taiwan. pp. 237-238, pl.156. Bot. Dept. Natl. Taiwan Univ. Taipei.
Kao, M. T. 1993. Hydrocotyle. In T. C. Huang et al. (eds.), Flora of Taiwan 2nded. Vol. 3. pp. 1024-1030.
Liou, S. L. 1979. Hydrocotyle. In S. L. Liou et al. (eds.), Flora Reipublicae Popularis Sinicae. Vol 55(1). pp. 13-31.
Liu, T. S., C. Y. Chao, and T. I. Chuang. 1961. Umbelliferae of Taiwan. Quart. J. Taiwan Mus. 14: 26-31.
Liu, T. S. and M. T. Kao. 1977. Hydrocotyle. In H. L. Li et al. (eds.), Flora of Taiwan. Vol. 3. pp. 953-957.
Makino, T. 1910. Observation on flora of Japan. Bot. Mag. Tokyo. 24:242-243.
Masamune, G. 1930. Contribution to our knowledge of the flora of the southern part of Japan I. J. Soc. Trop. Agric. 2:51.
-----------------1932. Symbolae Florae Australi-Japonicae II. J. Soc. Trop. Agric. 4: 300.
-----------------1954. A List Of Vascular Plants Of Taiwan. pp. 90-91.
Matsumura, J. and B. Hayata. 1906. Enumeratio Plantarum Formosanarum. J. Coll. Sci. Imp. Univ. Tokyo. 22: 169-171.
Ohba, H. 1999. Hydrocotyle In K. Iwatsuki et al. (eds), Flora of Japan. Vol. 2c. pp. 269-271.
Ohwi, J. 1933. Symbolae ad Floram Asias Orientalis. Acta Phytotax. Geobot. 2:151.
-----------1951. New plants from Japan and its neighbours (1). J. Jap. Bot. 26: 232.
Pimenov, M. G. 2003. Karyotaxonomical analysis in the Umbelliferae. Science Publisher Inc. NH. USA.
Shan, R. H. 1936. Studies on Umbelliferae of China I. Sinensia: Cont. Metro. Mus. Nat. Hist. 7: 477-481.
Sharma, H. C. 1982. A technique for somatic counts from root tips of cereal seedlings raised by embryo culture. Current Science 51(3): 143-144.
Subramanian, D. 1986. Cytotaxonomical studies in South Indian Apiaceae. Cytologia 51: 479-488
Tseng C. C. 1967. Anatomical studies of flower and fruit in the Hydrocotyloideae (Umbelliferae). Univ. Calif. Publ. Bot. 42: 1-58.
Valca’cel, V., O. Fiz and P. Vargas. 2003. Chloroplast and nuclear evidence for multiple origins of polyploids and diploids of Hedera (Araliaceae) in the Mediteranean basin. Mol. Phyl. Evol. 27: 1-20.
Webb, C. J. and E. J. Beuzenberg. 1987. Contributions to a chromosome altas of the New Zealand flora ─ corrections and additions to number 21 Umbelliferae (Hydrocotyle). New Zealand J. Bot. 25: 371-372.
Yamazaki, T. 1994. Variations of Hydrocotyle sibthorpioides Lam. in Japan. J. Jap. Bot. 69: 111-112.
--------------- 2001. Umbelliferae in Japan I. J. Jap. Bot. 76:137-150.
Yi, T., P. P. Lowery II, G. M. Plunkett, and J. Wen. 2004. Chromosomal evolution in Araliaceae and close relatives. Taxon. 53(4): 987-1005.