Popcorn Flower (Plagiobothrys nothofulvus)
Family: Borage (Boraginaceae)
Habitat: Open areas and grasslands below 4,000 feet (1,200 meters). When it's in season, you can see lots of it along Highways 41 and 140 before you reach the park.
Flowering Season: March - May
Size: The flowers are tiny, usually ten millimeters or less in diameter, on slim stalks typically around a foot tall. Though small, popcorn flower is one of the most widespread foothill flowers, capable of transforming springtime landscapes. If you're driving up to Yosemite and you see vast sheets of white flowers whizzing past, you're probably looking at popcorn flower.
This Photo: Between Oakhurst and Ahwahnee, early April; elevation 2,300 feet (700 meters)
Many wildflower books omit the space and refer to this plant as "popcornflower". Theydothistomakeiteasiertoread.