Sun Spurge

Sun Spurge - Euphorbia helioscopia

Description

Short to medium, more or less hairless plant.  Stem usually solitary, erect.  Leaves oval, broadest above the middle, blunt, finely toothed in the upper half.  Umbel with 5 main rays and yellowish bracts, similar in shape to the leaves.  

Similar Species

Euphorbia peplus is a similar small spurge

Identification difficulty
ID checklist (your specimen should have all of these features)

Leaves glabrous and obovate (widest towards the end not the stalk).  The cyathium (the cup-shaped structure that carries the male and female flowers) is rounded on the outer edge (not concave and with two points, as in E peplus).  The ovary and capsule are glabrous.

 

Habitat

Cultivated land, gardens, allotments, arable fields and waste ground.

When to see it

May to August.

Life History

Annual.

UK Status

Fairly common throughout Britain, but scarcer and more coastal in the north.

VC55 Status

Quite common in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 367 of the 617 tetrads.

In the current checklist (Jeeves, 2011) it is listed as Alien (archaeophyte); occasional

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Additional images

All NatureSpot records

Photo of the association

Melampsora euphorbiae

The rust Melampsora euphorbiae commonly causes galls on Petty Spurge and Sun Spurge, and occasionally on other species of Spurge. There is no host alternation.  Stems and leaves become distorted and thickened, with orange aecia on both leaf surfaces, petioles and stems.  Later, yellow uredinia are present on leaf underside; dark telia are occasional on Petty Spurge.