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Pronunciation: kas-til-AY-ha ex-ZER-ta
Common name: Purple owl's clover
Family: Orobanchaceae (Broomrape)
Habitat: Grassy slopes and openings in chaparral and coastal sage scrub below 3000' and even extending to the w. Mojave Desert
Blooming period: March to May
Name derivations: 1) Castilleja 2) exserta