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菊科(Asteraceae)是世界、也是中国种子植物最大和最进化的科之一,约1000属,25 000~30000种,广布全世界,热带较少[1]。菊科千里光族(Senecioneae)是中国物种数量较多的一个族,国内约含23属457种[2],其中,合耳菊属约60种,国内产约47种[3-4],是菊科千里光族的一个中型属,多为草本或者亚灌木,直立,头状花序黄色。该属曾被长期归入千里光属(Senecio L.),Jeffrey和Chen因为其亚灌木的生长习性,尤其因为其花药基部具有膨大的花药领和长尾状的不育组织特征,与千里光属明显有别而将其独立为属[3]。该属部分种如红缨合耳菊[Synotis erythropappa (Bureau & Franch) C. Jeffrey & Y. L. Chen]是民间常用的药材[5],并且该属合耳菊系许多种如昆明合耳菊[Syn. cavaleriei (Lévl) C. Jeffrey & Y. L. Chen]、滇南合耳菊(Syn. austroyunnanensis C. Jeffrey & Y. L. Chen)和肇骞合耳菊(Syn. changiana Y. L. Chen)等,因叶较大且往往集生枝顶,花葶明显,花序密集,舌花黄色亮眼而具有较大的观赏价值[6]。
在进行国产千里光以及合耳菊属的分类研究过程中,发现产于广东省西部怀集县有几号褐柄合耳菊标本。经查阅《中国植物志》[7]、《广东植物志》[8]以及《Flora of China》[9]后,发现均未记录广东省有该种植物,应为新记录种。该种的凭证标本现存于中国科学院华南植物园标本馆(IBSC)和中国科学院植物研究所植物标本馆(PE)。现报道如下:
A Newly Recorded Species of Genus Synotis (Asteraceae: Senecioneae) from Guangdong Province, China
doi: 10.12172/202112250001
- Received Date: 2021-12-25
- Available Online: 2022-07-21
- Publish Date: 2022-10-26
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Key words:
- Asteraceae /
- Synotis /
- Synotis fulvipes /
- Xingang forestry farm /
- A new record
Abstract: Based on specimen examination and literature study, a new record species (Synotis fulvipes (Ling) C. Jeffrey & Y. L. Chen) of the genus Synotis (Clarke) Jeffrey & Chen was reported, which was distributed in Huaiji county, northwest Guangdong province, China. This discovery further enriched the plant diversity and ornamental plant resources in Guangdong province. In this paper, the morphological description, specimen vouchers were provided, and geographical distribution of the species in China was further clarified.