Asked May 24, 2016, 2:31 AM EDT
Juneau County Outside United States
Hi. I agree that it doesn’t look like velvetleaf, partly due to its very shiny (glabrous) leaves. I went through this key to New Zealand weeds and did not find any good match. Based on the structure and position of its leaves, my suspicion is that it is some sort of bean (family Fabaceae), particularly since it is growing in your compost. This identification can be confirmed if it flowers, as members of this family have very distinctive, bilaterally symmetrical flowers.