Medicinal and aromatic plants – industrial profiles

Key to species and major hybrids
1
Bracts subtending flowers ovate rhombic (diamond shape) . . . . . . . . . . . . . . . . . . . . . . .  2
Bracts subtending flowers linear to linear-lanceolate in shape . . . . . . . . . . . . . . . . . . . . .  4
2
Bracts at least twice as broad as long, bracteoles minute 
(not clearly visible)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
L. angustifolia
Bracts 
c
. 3
longer than broad, bracteoles large 1–4 mm  . . . . . . . . . . . . . . . . . . . . . . . .  3
3
Flower stalks usually unbranched, flowers deep purple/mauve in colour,             
L. 
leaves with woolly grey to silver indumentum  . . . . . . . . . . . . . 
L. angustifolia
L. lanata
Flower stalks branched, shades of purple lilac, blues or white, leaves
with non-woolly grey to silver grey indumentum  . . . . . . . . . . . . . . . . . . . .  
L. x intermedia
4
Calyx with eight nerves and eight-toothed. Leaves with uniform dense 
white woolly indumentum  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. lanata
Calyx with thirteen nerves and five-toothed. Leaves with 
silvery–grey indumentum  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. latifolia
1.