ROMAN NETTLE

Urtica pilulifera

Nettle Family [Urticaceae]

month8may month8jun month8june month8jul month8july month8aug month8sep month8sept

status
statusZcasual
 
flower
flower8green
female
flower
flower8white
male
inner
inner8red
female
inner
inner8white
male
morph
morph8actino
 
petals
petalsZ4
 
type
typeZglobed
female
stem
stem8square
 
contact
contactZmedium
 
sex
sexZmonoecious
 

Corsica Photo: © Richard Lansdown
Unlike Stinging Nettle, Roman Nettle is not dioecious, or even bisexula, but is monoecious, with separate male and female flowers on the same plant. The female flowers are on stalks growing from the leaf axils and are globular consisting of many female flowers each and are green to red. The white halo around the spheres are yet more stinging trichomes. The male flowers are much smaller with 4 white petals and in bunches along the stalks which also emerge from the leaf axils. The plants grow to maybe 2m high or higher.


Corsica Photo: © Richard Lansdown


Corsica Photo: © Richard Lansdown
There are stinging glandular hairs on the square red stems full of an irritant liquid. The leaves are green (but here browning) and with deeply-cut teeth. The Male flowers can be discerned on the central plant near the top as short strings.


Uniquely identifiable characteristics :

Distinguishing Feature : the globular flowers with stinging trichome hairs.

It is a casual plant (now thought not to exist in the UK).


  Urtica pilulifera  ⇐ Global Aspect ⇒ Urticaceae  

Distribution
 family8Nettle family8Urticaceae

 BSBI maps
genus8Urtica
Urtica
(Nettles)

ROMAN NETTLE

Urtica pilulifera

Nettle Family [Urticaceae]