a member of the papilionaceae family

a Determinative

— A is used when the following word could be any of a certain type. Compare "A book I saw on the shelf" and "The book I gave you yesterday".

a Noun

— A is the first letter of the alphabet. The letter "a" comes before "b". — In some schools, an A is a very high grade. Ron got an A on his earth science test.

member Noun

— A member is someone belonging to a group or organization. I am a member of Simple English Wikipedia.

of Preposition

— Made using. It is a house of cards.

the Determiner

— Used, instead of a, to reference something specific, already known to exist. Compare "I read a book." and "I read the book." — Used with a stress, to show that the word following is special. Are you the John Smith that I went to school with? — Used with an adjective that acts like a noun to mean all of the people concerned The poor are always with us. — Used with superlatives forms of adjectives and adverbs. You are the best.

Papilionaceae

— noun leguminous plants whose flowers have butterfly-shaped corollas; commonly included in the family Leguminosae

family Noun

— A family is a group of people with a blood or marriage relation. My parents and my two brothers are my family. — A language family is a group of languages that is believed to have came from the same language. The Indo-European language family is a family of languages that is spoken by 3 billion people.