Lotus crassifolius v. otayensis is the California native lotus that comes from Otay Mountain.

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Lotus crassifolius var. otayensis
Otay Mountain Lotus

California
Herbaceous perennial

Sun: Moderate to Full
Water: Low to Moderate
Size: 3 feet

Furry grey upright stems, clusters of purple and white pea-sized flowers in spring, grey-green oblong leaves. Endemic to California.

They sure do look like pea flowers. I wonder if this is in the pea family?

It is! It is in the Pea Family – Fabaceae.

Did I forget to mention that Otay Mtn. is in San Diego County? Sounds like a desert down there.