Question: Which subgenus of the genus "Vaccinium" does this group of evergreen dwarf shrubs or trailing vines belong to, which Captain Henry Hall firstly successfully cultivated?
Sentence (from "Cranberry"): "Vaccinium oxycoccos" is cultivated in central and northern Europe, while "Vaccinium macrocarpon" is cultivated throughout the northern United States, Canada and Chile.
Relevant evidence: No