The phrase "most racemose" describes a plant that has inflorescences arranged in a raceme-like pattern, meaning the flowers are arranged on the stem in a line with the oldest blooms at the bottom. Synonyms for "most racemose" could include "most spike-like," "most panicle-like," or "most spicate." A spike is a type of inflorescence where the flowers are arranged in a long, unbranched spike. A panicle is similar to a raceme, but the branches of the inflorescence are themselves branched. And a spicate inflorescence is similar to a spike, but the flowers are more closely spaced together. Essentially, all of these terms describe inflorescences with flowers arranged in a linear, elongated fashion.