C. grijsii
Hance 1879. Was collected in 1861 in Fujian by C.F.M. de Grijs. Distributed in China: Fujian, Hubei, Sichuan, Guangxi. Tidy upright bushes, impressed veins, related to C. yuhsienensis that has larger flowers, there is a double form called 'Zhenzhu Cha'. Grows to 11 ft (3 m) high, flowers winter to spring. C. yuhsienensis. Hu 1965. Discovered on the mountain Yuh Shan (You Xian) in Hunan in 1960s. Distributed in China: Hunan, Jiangxi, Hubei, Guangdong. Best quality oil of any species, grows to 11 ft (3 m) high, flowers winter to spring, parent of 'Yume'. Chromosome numbers: 2n = 30, 45, 75 and 90 (Gu, et al., 1988; Kondo, 1990; Xiao, et al., 1991).