Two vocabularies, both useful
Ask a botanist what rooibos is and you get Aspalathus linearis. Ask a buyer and you get whether it is red or green, which cut, and whether the Cederberg appellation is on the packet. Both answers are correct and only one of them helps you choose.
Where trade names carry real information
Con palo and sin palo for mate. Hangbaiju and gongju for chrysanthemum. Xinhui and its date for chenpi. Ceylon against cassia for cinnamon. In every case the trade word encodes something a buyer acts on and the binomial does not.
Where they mislead
When the trade name implies a species it does not have. Snow chrysanthemum is a Coreopsis; sweet neem is not neem; black cumin is a buttercup relative. The name is doing the work of a description and getting it wrong, which is different from encoding a grade.
Where they encode a place that is not an origin
Fujian jasmine, Tunisian orange blossom, Xinhui peel, Bulgarian rose, Kansai cherry blossom. Every one of those places genuinely does something to the material, and none of them is where the plant is from. Both facts are worth knowing and they are different facts.
How TeaHQ records the difference
Origin statements name a range and say when they are describing cultivation instead. Production centres appear in the production and culture sections. Where a trade name is inaccurate as a description, the authenticity note says so. The rule is to label the distinction rather than pick a winner.