When I was 10 (1988) reading Larry Niven's "Integral Trees" I was disappointed that the story didn't end - as I had expected it to - with the Carther descendant

When I was 10 (1988) reading Larry Niven's "Integral Trees" I was disappointed that the story didn't end - as I had expected it to - with the Carther descendants eventually building trees to entirely surround the star.