0703.90.00.20 - Green onions of a species other than Allium cepa

This HTS category, 0703.90.00.20, specifically covers green onions that are not of the *Allium cepa* species. This means it encompasses varieties like scallions or spring onions that are botanically distinct from common bulb onions. These vegetables are typically identified by their long, green, hollow leaves and a small, underdeveloped bulb or no bulb at all, and are generally consumed for their leafy tops.

Distinguishing this category from its sibling, 0703.90.00.40 "Other," is crucial. The sibling category is a residual provision and would encompass any other alliaceous vegetables not specifically enumerated elsewhere within the 0703.90.00 subheadings, provided they do not fall under the more specific classifications for leeks, onions, or garlic. Therefore, this classification is precise for green onions distinct from the common onion (*Allium cepa*).

As this is a leaf node in the HTS classification system, there are no further subcategories under 0703.90.00.20. Classification at this level is definitive for the specified type of green onion, and further subdivisions are not required by the tariff schedule for this particular product. The primary classification consideration will be the botanical identification of the green onion to ensure it is not *Allium cepa*.