Greater Butterfly Orchid

I went on a little orchid hunt today to see if I could find some different varieties.  It is still early in the season for most orchids, the exception being the Early Purples which are plentiful but now mostly past their best.  I couldn't find any Green-Winged Orchids but I did find examples of Greater Butterfly Orchid in bud.  I shall return in a week or so to take a picture of them in bloom and to confirm that they are the Greater rather than the Lesser Butterfly Orchid as my identification today is based mostly on having found this variety in this location on a previous occasion.