主菓子 are Karagoromo (Chinese robe) sweets. May is the month of irises in Japan. For these sweets, white-bean paste has been wrapped in rice dough that has been partly tinted a faint purple.
干菓子 are Kutsuwa (horse bit) sweets. These sugar cakes are shaped like the old-style bits used for horses in Japan. LOwE LEFT: Tazuna (bridle) cakes. Sugar cakes dyed and twisted to resemble the old-time bridle for a horse.