what does Asclepias purpurascens mean?

ASCLEPIAS PURPURASCENS as NOUN

Meaning
- perennial of eastern North America having pink-purple flowers
Synonym(s)
- purple silkweed (what does purple silkweed mean?)
Hypernyms(s) Asclepias purpurascens is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- milkweed (what does milkweed mean?)
- silkweed (what does silkweed mean?)