How do the fragrances of Cymbidium goeringii (spring orchid) from different regions differ?

There are indeed some small differences among Cymbidium goeringii varieties from different regions. Jiangsu and Zhejiang spring orchids generally have paler petal colors, with more of them having purple veins on the bud sheaths; spring orchids from Hubei, Henan, Shaanxi and Anhui are the same, mainly with deeper petal colors and more white bud sheaths; spring orchids from Sichuan, Guizhou and Yunnan come in two types: one with thinner petals and even thinner bud sheaths, and the other with thick petals known as douban. Among these four types of spring orchids, the thin-petaled spring orchids from Yunnan, Guizhou and Sichuan are the most fragrant and the most mellow; next come the Jiangsu and Zhejiang spring orchids; among the spring orchids from Hubei, Henan, Shaanxi and Anhui, those with noticeably strong fragrance are the Anhui spring orchids and the more southerly Hubei spring orchids, whose fragrance differs little from that of Jiangsu and Zhejiang spring orchids, and some are also very fragrant, but on the whole their fragrance is a little lighter than that of Jiangsu and Zhejiang spring orchids. Whether Anhui and Hubei spring orchids are fragrant also depends on temperature and moisture during the flowering period; here the temperature during the flowering period of spring orchids is lower, which is not conducive to the volatilization of the aromatic oils, so it is not entirely a matter of the spring orchid itself. Douban spring orchids are generally not fragrant. The spring orchids of southwestern Hubei, namely the Enshi region, belong to the same strain as those of Yunnan, Guizhou and Sichuan, and are very fragrant and mellow. This also reflects the geographical complexity of Hubei and the diversity of orchids.