SLIPPERY ROCK, Pa.—A conservancy group has purchased 23 acres to expand a nature preserve known for its wildflowers along a western Pennsylvania creek.

The Western Pennsylvania Conservancy says it now owns 115-acres in the Wolf Creek Narrows Natural Area.

The land is known for wildflowers including trillium, bluebell and trout lilly.

The conservation area is across the road from a 42-acre Audubon Wildlife Sanctuary known as Miller Woods. That land is owned by Slippery Rock University.

Conservancy president Tom Saunders says, "The spectacular display of spring wildflowers and its tall bluffs" make the Wolf Creek area "one of western Pennsylvania's rare landscapes."