method_of scale_of acronym entity The following flower descriptors refer to the flowers at the axil of the first external unlifted bract. Fresh material must be used (make the observation as soon as you detach the bract/flower from the rachis). Visually observe the colour of the lobe at the tip of the tepal. Use colour chart B and observe out of direct sunlight. Lobe colour of tip of compound tepal - estimation variable_of attribute