After removing European beachgrass from 80 acres at Abbotts Lagoon, the Point Reyes National Seashore is battling new invaders threatening the growth of Tidestrom’s Lupine, an endangered plant. On Martin Luther King Day, volunteers can help park staff remove the non-natives, such as European searocket, New Zealand spinach, iceplant and nightshade. The area was the focus of . . .

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