Robuta

https://www.nps.gov/prsf/learn/nature/coast-cryptantha-or-popcorn-flower.htm

Coast Cryptantha or Popcorn Flower - Presidio of San Francisco (U.S. National Park Service)

popcorn flower san francisco coast cryptantha presidio

https://species.wikimedia.org/wiki/Cryptantha_flaccida

Cryptantha flaccida - Wikispecies

cryptantha wikispecies