What's that plant?

Flowers Blue, Lavender, or Purple

Plant of grassy fields, sometimes abundant
Leaves at base, only. No leaves on flowering stem	Wild hyacinth
Leaves on main stem
Flowers in dense clusters
Flowers blue	Arroyo lupine
Flowers purplish, dangling	Winter vetch
Flowers occurring singly	Wild radish
Plant of semi-shaded areas, as along edge of trails
Stems or leaves with sharp spines; thistles
Leaves with white mottling	Milk thistle
Leaves not white mottled
Leaves and stems with numerous spines	Italian thistle
Leaves spiny, stems sparingly so	Bull thistle
Stems and leaves without sharp spines
Petals fused at base -- not all separate
Stems with short, bristly hairs
Flower cluster a tight fiddle-like coil	Caterpillar phacelia
Flower cluster more open; stems weak and straggly	Fiesta flower
Stems without bristly hairs
Flowers with a small tail or spur	Larkspur
Flowers without a spur	Foothill penstemon
Petals separate
4 petals
Petals narrower toward center of flower	Elegant clarkia
Petals wedge shaped, not narrower at center	Purple clarkia
6 petals	Blue-eyed grass