Abstract: Based on field survey, specimens and literatures, Orchid resources and floristic characteristics in Shenzhen were studied. The results were showed as follows: (1) There were 75 orchid species, belonging to 43 genera, in which terrestrial orchids were dominant with 49 species in 28 genera, and 23 species in 13 genera for epiphytic and 2 species in 2 genera for saprophytic. Orchiaceous species were mainly distributed in Mt. Wutongshan and Mt. Qiniangshan. (2) Nine species were the new records to Shenzhen, in which 2 species of Cheirostylis clibborndyeri and Zeuxine flava were the new records to Guangdong province. 2 genera of Vrydagzynea and Geodorum were the new records to Shenzhen. (3) The geographical element of wild Orchidaceous flora in Shenzhen was predominated by tropical one, accounting for 87.5% of non-world genera, the temperate elements were occupied only 12.5% of non-world genera. (4) Comparing with neighboring regions, Orcidaceous flora of Shenzhen was similar to Hong Kong, between which there were shared 41 genera including 70 species, taking up 95.3% of total genera and 93.3% of total species in Shenzhen.

Key words: Shenzhen region, Orchidaceae, plant resources, new record, flora

摘要： 通过野外实地调查，结合标本和文献查阅，对深圳地区野生兰科植物种质资源、区系特征等进行研究。结果表明：(1) 深圳野生兰科植物资源共43属75种，以深圳东南部的梧桐山和东部的七娘山较为丰富。其中地生兰28属49种，附生兰13属24种，腐生兰2属2种。(2) 本次调查共发现9个深圳新记录种，其中叉柱兰Cheirostylis clibborndyeri、黄花线柱兰Zeuxine flava为广东省新记录种，二尾兰属Vrydagzynea、地宝兰属Geodorum为深圳新记录属。(3) 深圳野生兰科植物区系以热带成分为主，占非世界属总数的87.5%，温带成分仅占12.5%。(4) 与邻近地区比较，与香港共同属最丰富，有41属，占深圳总属数的95.3%；共有种70种，占深圳总种数的93.3%，具有明显的相似性。

关键词: 深圳地区, 兰科, 植物资源, 新记录, 植物区系