A 2024 Paper Calls Phoenix Dancong a Separate Tea Species
A 2024 paper argues Phoenix Mountain's single-bush oolongs are a species apart from Camellia sinensis on four traits, while a 2022 chloroplast-genome study clustered them with cultivated Camellia sinensis, and no study has yet tested the claim directly.
A December 2024 paper argues that Phoenix Dancong is a species apart from the Camellia sinensis that becomes sencha in one workshop and Keemun in another. A 2022 chloroplast-genome study points the other way.
What was claimed, and where the claim was filed
Between June and November 2024, a research team led by the botanist Ye Chuangxing (叶创兴) carried out field surveys of the tea tree resources on Phoenix Mountain (凤凰山), in Chaozhou, Guangdong. The resulting paper, "A New Plant Species of Guangdong Tea. Phoenix Tea" (广东茶叶植物一新种：凤凰茶), appeared in the Special Topic section of the December 2024 issue of China Tea (中国茶叶), volume 46, issue 12 (reported by Nanfang Daily1).
The argument makes a species claim, not merely a refinement of a varietal name. The paper holds that Phoenix Shuixian, and the Dancong population descended from it, differ enough in form to be established as an independent new species, Phoenix Tea (凤凰茶), standing as a third species beside Camellia sinensis, the ordinary cultivated tea plant, and the Pu'er tea plant, which that literature treats as a species in its own right.
The four traits
The claim is morphological, which is to say it rests on what a trained eye and a caliper can observe on a living plant. Four traits carry it.
First, the ovary is hairless. No pubescence at all, where Camellia sinensis and the Pu'er tea plant carry it.
Second, the fine hairs on the young shoots and leaves disappear very quickly as the leaf matures, and the finished tea carries no visible down whatsoever.
Third, Dancong teas made from its leaves come in many floral fragrance types, which the source says neither Camellia sinensis nor the Pu'er tea plant has. Phoenix names those types honey orchid, duck shit, almond, orchid. The 2024 paper enters these fragrance types as botanical evidence.
Fourth, the fruit's outer skin, the pericarp, measures only 1 to 2mm (under a tenth of an inch) thick, against 3 to 7mm (about an eighth to a quarter inch) in the related species from which it is being distinguished.
What thirty chloroplast genomes say about descent
Two years earlier, a different instrument was pointed at the same bushes.
Liu, Lin, Yang, Zou, Zhang, Liu, Lin and Zheng published a comparative phylogenetic analysis of oolong tea, specifically Phoenix Dancong tea, using complete chloroplast genome sequences. It appeared in Heliyon2 on 24 December 2022, volume 8, issue 12, article e12557. The team sequenced and assembled the complete chloroplast genome of thirty different Phoenix Dancong cultivars sourced from Chaozhou.
What a chloroplast genome is, plainly, since the answer depends on it. The chloroplast is the leaf's own small, separate genome, distinct from the one in the cell nucleus, and in tea it is inherited down the maternal line largely intact. It changes slowly. That makes it a serviceable record of descent: sequence enough of them, compare the differences, and the pattern of who is closest to whom falls out as a tree.
The tree, in this case, put Phoenix Dancong together with Fujian oolong and clustered both with other cultivated Camellia sinensis, within the genus Camellia, family Theaceae. The thirty Phoenix genomes sorted with Fujian oolong.
That paper was published in December 2022, two full years before the China Tea claim.
Why both readings can be careful and still disagree
Morphological classification and molecular phylogenetics are two legitimate lines of evidence in plant taxonomy. They are not a superior method and an obsolete one. They ask different questions.
Camellia has a long history of hybridization, of polyploidization, and of several centuries of cultivation-driven selection by people choosing bushes for the cup rather than for the herbarium. The Heliyon team's own framing notes exactly that history for Phoenix Dancong: numerous hybridizations and polyploidization behind the population under study. A lineage worked over that thoroughly can hold real, stable, heritable differences in form that a single maternally inherited genome does not register, because the chloroplast follows one parent and records one thread of a braided descent. And in the other direction, a hairless ovary and a 1 to 2mm pericarp, however cleanly measured, do not by themselves establish that a population has separated evolutionarily from its neighbours.
What the record holds as of now
No published molecular study has yet been designed to test the 2024 morphological claim itself. That is the specific gap. The work that would settle the matter, sequencing built around the Phoenix populations and the comparison species that the new-species proposal actually names, has not appeared.