A cultivar may be propagated sexually or asexually. Cultivars may be produced from seed and therefore may exhibit some variation in traits other than that for which the selection was made. For example, Lavandula angustifolia 'Munstead Dwarf' is a lavender selected for its dwarf habit. Even if seed grown, all plants so named should not exceed 18 inches in height, but may show slight variation in flower or foliage color, habit, etc. In order for all Munstead cultivars to be identical, or clones, they would have to be propagated asexually from cuttings.
Pronunciation is sometimes an obstacle to feeling comfortable with botanical names.
When perusing catalogs another feature of naming plants becomes apparent. Confusion arises when a company uses a trademark name as a cultivar name. Many of you will recognize this name. This naming practice violates both trademark specifications and nomenclatural rules, but it is becoming increasingly common. The reason is profit.