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Li M, Li D, Lu M, Mo S, Ding S, Chen Y, Lai Y, Zhang D, Liao W, Fan Q. A new species of Cotoneaster (Rosaceae) from western Sichuan, China. PHYTOKEYS 2023; 236:39-52. [PMID: 38058313 PMCID: PMC10696602 DOI: 10.3897/phytokeys.236.111819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/08/2023] [Indexed: 12/08/2023]
Abstract
Cotoneasterdensiflorus, a new species of Rosaceae from western Sichuan, China, is described and illustrated. Morphologically, we inferred that the new species belongs to CotoneasterSer.Salicifolii sensu Yü et al. (1974) in the Flora of China and Fryer and Hylmö (2009). This species is most similar to C.salicifolius, but differs in its leaf blade of ovate-lanceolate to obovate shape (vs. elliptic-oblong to ovate-lanceolate), smaller length-width ratio of 2.37 ± 0.31 (vs. 3.17 ± 0.32), slightly conduplicate (vs. not conduplicate), less lateral veins of 6-8 pairs (vs. 12-16 pairs), upper surface slightly rugose (vs. rugose), leaf margin plane (vs. revolute), lower surface densely grey tomentose (vs. grey tomentose, with bloom), greater corolla diameter of 7-9 mm (vs. 5-6 mm), styles 2 (vs. 2-3), pyrenes 2 (vs. 2-3), larger pollen grains P/E values of 2.05 ± 0.12 (vs. 1.19 ± 0.05) and leaf epidermis type W (vs. type I). Based on phylogenetic analysis of the whole chloroplast genome, C.densiflorus is sister to C.rhytidophyllus, but distantly related to C.salicifolius.
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Affiliation(s)
- Mingwan Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Dan Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Mengfei Lu
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Shuangfeng Mo
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Shen Ding
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Yuanyuan Chen
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Yong Lai
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Dangquan Zhang
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, ChinaHenan Agricultural UniversityZhengzhouChina
| | - Wenbo Liao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, ChinaSun Yat-sen UniversityGuangzhouChina
| | - Qiang Fan
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, ChinaSun Yat-sen UniversityGuangzhouChina
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