epi-tetraphyllin B, cyanogenic glycosides which liberate hydrogen cyanide when activated by enzymes, have been found in the leaves. It is possible to boil away most of the cyanide. In South America, the plant is known for its medicinal uses. It is used in both herbal tea and dietary supplements, as well as in marmalades, ice creams, syrups and beverages. It is also used by the indigenous Argentinian Toba and Maka people. The passion flower is the national flower of Paraguay. Its intricate structure has generated Christian symbolism, each part representing a different part of the Passion of Christ. The "Etymology and names" section of Passiflora contains more information about this symbolism. Gallery References External links Topwalks.net: Passiflora caerulea caerulea Flora of Argentina Flora of Brazil Flora of Uruguay Garden plants of South America Plants described in 1753 Taxa named by Carl Linnaeus