“Three-leafed clover”

This may be Oxalis enneaphylla or Oxalis violacea. In any case, the genus is probably Oxalis — http://phytoimages.siu.edu/cgi-bin/dol/dol_terminal.pl?taxon_name=Oxalis&rank=genus — in the Oxalidaceae family, rather than Trifolium — http://phytoimages.siu.edu/cgi-bin/dol/dol_terminal.pl?taxon_name=Trifolium&rank=genus — in the Fabaceae family. (It’s scary that I have sufficient confidence to even write this before Dan looks at the image and can make an official ID!)

Dan says, “OxalisViolacea_maybe” using “computer-filename syntax” in Dropbox.

Compare
» http://phytoimages.siu.edu/imgs/Cusman1/r/Oxalidaceae_Oxalis_enneaphylla_71222.html
with
» http://phytoimages.siu.edu/imgs/pelserpb/r/Oxalidaceae_Oxalis_violacea_12203.html

Photo taken at SIUC Plant Biology Greenhouse, http://www.plantbiology.siu.edu/facilities/plant-biology-facilities/greenhouse/index.php

One year ago (“Deep in thought?”): http://365project.org/rhoing/365/2012-11-07
Two years ago (“Pretty or Creepy?”): http://365project.org/rhoing/365/2011-11-07

[ IMG_36745S12x9tm :: f/4.5 :: 1/250" :: ISO-200 :: 60mm ]

[Rick Schies]

They are very pretty, and I bet just as lucky as the 4 leaf