awn 
A slender bristle-like terminal part, i.e. grass flowers.

bract 
Scale or leaf-like upper leaf surrounding a flower or inflorescence, or from whose axil the flowers arise.

cordate 
Heart-shaped, with the point at the tip

labiate 
Having lips, or lip like parts, i.e. nettle flowers

linear 
Very narrow, as a straight line

ovate 
Egg-shaped

palmate, digitate 
Branched or lobed like the fingers of a hand

pinnate 
In two opposite rows along a common axis

rosette 
An arrangement of leaves, usually at the base of the stem

sagittate 
Arrow head-shaped

sessile 
Stalkless

spathe 
A sheath enclosing a flower branch

SYN.
Synonym

umbel 
Umbrella-shaped inflorescence, with flower stalks all arising from the same point