Abstract
The genus Lysimachia L. contains 180 species from subtropical and temperate regions in the northern hemisphere, and more than 150 species are native to China (Chen and Hu, 1989). Some of them are used as commercial garden plants. Up to now, 30 Lysimachia cultivars, especially color-leaf cultivars, were traded in North America, East Asia, and Europe. Lysimachia christinae Hance, a mat-forming herbaceous perennial endemic to China, commonly known as Christina loosestrife, is distributed extensively in south, southwest, and central China (Chen and Hu, 1989) with a subtropical continental monsoon climate. In recent years, it has been grown as a groundcover plant in central China. Its characteristics of creeping stems, charming yellow flowers, and strong adaptability render it particularly valuable in landscaping design. Moreover, L. christinae has greater heat and drought tolerance than L. nummularia ‘Aurea’, which has been widely used as groundcover in China (Du et al., 2007; Xu, 2007). Although the wild-type L. christinae has green foliage, color-leaf variations in the wild are available by direct
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