Genus

Chenopodium 

goosefoot

Chenopodium ambrosioides
Mexican tea
branches of inflorescence

Chenopodium ambrosioides has been removed from this genus and is now considered Dysphania ambrosioides.

Species of the Chenopodium genus in the Wild Florida Photo database:

The genus Chenopodium is a member of the Amaranthaceae - Amaranth family.