About [[PROTA, Introduction|PROTA]]
{{DISPLAYTITLE:''Echinocactus-Ehretia'' (Sturtevant, 1919)}}{{Turningpage|title=[[Sturtevant, Notes on edible plants, 1919]]|titlepreviouspage=Dipladenia-Dysoxylum (Sturtevant, 1919)|previousshortname=''Dipladenia-Dysoxylum''|titlefollowingpage=Elaeagnus-Elymus (Sturtevant, 1919)|followingshortname=''Elaeagnus-Elymus''}}
__NOTOC__
{| border="0" cellpadding="2" cellspacing="0" align="right" style="margin-left: 20px;"