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杜鹃属(Rhododendron)为杜鹃花科(Ericaceae)中种类最多、特有性极强的大属,广泛分布于欧洲、亚洲和北美洲,而中国的云南、四川和西藏是该属植物最重要的现代分布和演化中心[1]。自20世纪G. Forrest、俞德俊等人在中国西南的采集活动以来,杜鹃属植物大量被发现,目前全世界共有杜鹃属植物1000余种。近年来,仍有不少杜鹃属新种、新变种和新纪录种陆续发表。新种如百纳杜鹃(Rh. bainaense)[2]、习水杜鹃(Rh. xishuiense)[3]、腺苞杜鹃(Rh. adenobracteum)[4]、天门山杜鹃(Rh. tianmenshanense)[5]等。新记录种如戴晓勇等人对贵州杜鹃花科4种植物新记录的报道[6],龙海燕等人对贵州杜鹃花科5种植物新记录的发现[7],向剑锋等人对早春杜鹃(Rh. praevernum)新分布地的补充[8]等。
在对四川省雅安市荥经县进行林木种质资源调查过程中,鉴定出四川杜鹃花科一新记录种—弯柱杜鹃(Rhododendron campylogynum),现报道如下:
New Record of Ericaceae Plants in Sichuan Province, China
doi: 10.12172/202004010003
- Received Date: 2020-04-01
- Available Online: 2020-08-12
- Publish Date: 2020-10-12
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Key words:
- Rhododendron campylogynum /
- New record /
- Biogeographic significance /
- Sichuan Province
Abstract: One new record of Ericaceae species, Rhododendron campylogynum, was found in Sichuan Province. The new distribution points provided new data for discussing the geographical distribution pattern of Ericaceae species, the similarities and differences between western Sichuan and southeastern Tibet, and the chemotaxis processes from east to west.