One generation grows atop the other: a sporophyte has grown from an egg retained and fertilized at the tip of the green moss plant (a gametophyte). Spores will disperse from the capsule and start new green moss plants. (Courtesy Photo | Bob Armstrong)

One generation grows atop the other: a sporophyte has grown from an egg retained and fertilized at the tip of the green moss plant (a gametophyte). Spores will disperse from the capsule and start new green moss plants. (Courtesy Photo | Bob Armstrong)

Putting down roots: The evolution of moss and maple trees

An invasion of land plants millions of years ago.

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The intersection of Stephen Richards Memorial Drive and Mendenhall Loop Road on Wednesday, June 11, 2019. The Department of Transportation and Public Facilities plans to build a roundabout at the intersection. (Michael Penn | Juneau Empire)
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