Geranium from ARASAAC PICTOGRAMS
ARASAAC PICTOGRAMS is a free set of symbols with an English index by Michael Hjort-Pedersen.They are hosted on this Spanish website and can be found in English below the Spanish download option.
Sclera Pictograms also offer free symbols.
Sclera Pictograms were developed in Belgium(find out more here) and are available in English.
see my other blog entries on symbol resources