Plant keys
Sphaeralcea fendleri
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242417306
Monoptilon
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=121087
Lycium
http://canotia.org/volumes/CANOTIA_2009_Vol5_1_Chiang_et_Landrum_Solanaceae3_Lycium.pdf
Root link to keys
http://canotia.org/vpa_project.php
