what does chaparral pea mean?

CHAPARRAL PEA as NOUN

Meaning
- spiny evergreen xerophytic shrub having showy rose-purple flowers and forming dense thickets
- of dry rocky mountain slopes of California
Synonym(s)
- Pickeringia montana (what does Pickeringia montana mean?)
- stingaree-bush (what does stingaree-bush mean?)
Hypernyms(s) chaparral pea is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- shrub (what does shrub mean?)
- bush (what does bush mean?)