Ontario Wildflowers website

White Lettuce
(Prenanthes alba)

White Lettuce (Prenanthes alba) Other common names: White Rattlesnake-root

Other scientific names: Nabulus albus

French names: Prenanthe blanche

Family: Composite Family (Asteraceae)

Group: Lettuces, Prenanthes

Similar species:
  •   Tall Rattlesnake Root (Prenanthes trifoliata)

  •   Tall White Lettuce (Prenanthes altissima)

  •   Glaucous White Rattlesnake Root (Prenanthes racemosa)


Flowers: Summer;  White, Red/Pink;  7 or more parts (petals)

Leaves: Alternate, Simple, Toothed

Habitat: Forests

Grows in Sun/Shade: Shade

Books: Newcomb's Wildflower Guide: 384   

Native/Non-native: Native

Origin and Meaning of Names:
 Scientific Name: : white


Photographs: 167 photographs available, of which 10 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

White Lettuce (Prenanthes alba)

The beautiful flower of White Lettuce.

White Lettuce (Prenanthes alba)

White Lettuce (Prenanthes alba)

White Lettuce (Prenanthes alba)

Ripening seeds of White Lettuce.

White Lettuce (Prenanthes alba)

Flower buds atop the stem.

White Lettuce (Prenanthes alba)

White Lettuce leaves are highly variable. The ones shown here are more common. However, many shapes and sizes are possible.

White Lettuce (Prenanthes alba)

It is advisable to not use leaf shape to identify Prenanthes.

White Lettuce (Prenanthes alba)

More shapes of White Lettuce leaves.

White Lettuce (Prenanthes alba)

And yet another White Lettuce leaf.

White Lettuce (Prenanthes alba)

White Lettuce leaf in the late summer.


Range map for White Lettuce (Prenanthes alba)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)