Ca = calyx: or whorl of sepals
Co = corolla; or whorl of petals
CaCo = perianth; if sepals and petals are alike termed 'tepals'.
A = Androecium; or whorl of stamens.
G = Gynoecium; or ovary bearing carpels.
X
= number of sepals
X
= number of petals
X
= number of stamens
X = number of carpels: if one,
termed 'monocarpous', if two or more and free or distinct, termed 'apocarpous',
if two or more and fused, termed 'syncarpous' or connate.
X - X = variation in number in that family
X = X = Like floral parts in
two whorls
= fully fused or connate, especially in reference to the carpels of the gynoecium. If carpel # has no fusion symbol, carpels are free and distinct.
= apically fused or connate
= basally fused or connate
= fully distinct or fused; variation
within a family
= male unisexual flower
= female unisexual flower
= many
* = staminode;
a sterile stamen
= adnate; or fusion of two different
floral whorls
= 'hypanthium' when all whorls are present. Especially
frequent in the Rosidae. The floral whorls are perigynous to the gynoecium,
which is still considered superior to them.
= ovary inferior to insertion point of the other whorls.
The floral whorls are epigynous to the gynoecium.
= ovary superior to insertion
point of other floral whorls. The floral whorls are hypogenous to the gynoecium.
= ovary inferior to superior
- variation exists within the family; or half inferior.