what does arrowleaf groundsel mean?

ARROWLEAF GROUNDSEL as NOUN

Meaning
- perennial with sharply toothed triangular leaves on leafy stems bearing a cluster of yellow flower heads
- moist places in mountains of western North America
Synonym(s)
- Senecio triangularis (what does Senecio triangularis mean?)
Hypernyms(s) arrowleaf groundsel is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- wildflower (what does wildflower mean?)
- wild flower (what does wild flower mean?)