Chenopodiums

Lamb's Quarters (Chenopodium album) leaves and top

By Hugo.arg (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0-2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

Lamb's quarters (Chenopodium album) in flower

Picture taken by Rasbak and licensed under the Attribution-ShareAlike 3.0 Unported license.

Nettle-leaf fat-hen (Chenopodium murale) leaves

By Frank Vincentz (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons 

Forest & Kim Starr [CC-BY-3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons