Seen in bloom on 5 April 2011 down near the Grotto. Previously checked that area three weeks before and saw no blooms. (I only saw three plants on the 5th) Many plants in bloom on the 16th. Nothing on 10 May 2011.
Seen 5 plants in bloom on 21 Mar 2012 about a mile down from Camino Cielo on the backside of Arroyo Burro trail. Previously checked that area two weeks before and saw one plant with buds. Blooms didn’t start near the Grotto until 27 Mar (and then only one bloom).
This species is classified as 1B.2 (rare, threatened, or endangered in CA and elsewhere/Fairly threatend) by the California Native Plant Society.