|
A - Harebell
C. rotundifolia |
B - Clustered
C. glomerata |
C - Giant
C. latifolia
|
D - Spreading
C. patula
|
E - Nettle-leaved
C. trachelium |
| Plant height |
15-40 cm |
3-40 cm |
50-120 cm |
20-60 cm |
50-100 cm |
| Stems |
Unridged, hairless
to slightly hairly |
Unridged, with
fine hairs |
Bluntly ridged,
softly hairy to
nearly hairless |
Unridged, rough
to the touch with
fine bristly hairs |
Sharply angled,
with sparse harsh
hairs or bristles |
Middle and
lower stem
leaves |
Long-stalked |
Stalked |
Short-stalked |
Short-stalked |
Stalked |
Base of middle
and lower
stem leaves |
Heart shaped |
Slightly heart
shaped |
Narrowing
gradually |
Narrowing
gradually |
Heart shaped |
Margins of
middle and
lower stem
leaves |
A few shallow
teeth or lobes |
Small blunt teeth |
Toothed, but not
deeply or coarsely |
Scarsely-toothed,
often wavy-edged |
Coarsely and
deeply sharptoothed |
Flower
arrangement |
Few flowers loosely
arranged on a
stem, drooping on
individual stalks |
A dense compact
globular head of
flowers, often with more lower down
the stem |
Few to many
flowers in an
upright spike |
A few flowers on
widely spreading
stems |
Few to many
flowers in an
upright spike |
| Flower stalks |
present |
absent |
present (up to 2cm) |
present (2-5 cm) |
present (up to 1cm) |
Calyx teeth at
base1 |
< 1mm |
> 1mm |
> 1mm |
> 1mm |
> 1mm |
| Flower colour |
Pale blue |
Violet or purplishblue, sometimes
white |
Pale to purplishblue |
Pale to purplish
blue |
Pale purplish blue
to white |
| Flower shape |
bell shaped |
bell shaped |
bell shaped |
broadly funnel
shaped (petals
spreading) |
bell shaped |
| Petal lobes |
1/4 - 1/3 way to
base |
1/4 - 1/2 way to
base |
1/3-1/2 way to
base |
1/2 way to base |
1/4-2/5 way to
base |
| Petal length |
15 mm |
15-20 mm |
40-50 mm |
15-25 mm |
30-40 mm |
1. The teeth at the bottom of the green floral leaves surrounding the flower petals.
