The stems also have 2 or 3 spathes (leaves of the flower bud), which are keeled,[REF] green, oblong or lanceolate (shaped) and long [REF].
It has 2 pairs of petals, 3 large sepals (outer petals), known as the 'falls' and 3 inner, smaller petals (or tepals), known as the 'standards' [REF].