BITING STONECROP

WALL-PEPPER

Sedum acre

Stonecrop Family [Crassulaceae]  

month8May month8jun month8june month8jul month8july

status
statusZnative
flower
flower8yellow
morph
morph8actino
petals
petalsZ5
stem
stem8round
toxicity
toxicityZlowish

28th June 2005, Great Orme, Llandudno, North Wales. Photo: © RWD
A low-growing succulent plant with a single flower atop the stalk. Likes to grow on limestone amongst rocks.


28th June 2005, Great Orme, Llandudno, North Wales. Photo: © RWD
Each flower has five narrow bluntly-pointed bright-yellow petals.


9th July 2008, Gait Barrows, Silverdale, Lancs. Photo: © RWD
The leaves are small and a bit like buds on the stem.


9th July 2008, Gait Barrows, Silverdale, Lancs. Photo: © RWD
In the centre of the flower are five smaller flat constructions and perhaps seven stamens with creamy coloured pollen.


9th July 2008, Gait Barrows, Silverdale, Lancs. Photo: © RWD
The leaves are bulbous, covered in small lumps similar to sand and reddening in parts.


9th July 2008, Gait Barrows, Silverdale, Lancs. Photo: © RWD
Without the flowers.


8th June 2005, Monsal Dale, Derbyshire. Photo: © RWD
Not yet flowering.


Superficial resemblance to : Rock Stonecrop but Rock Stonecrop is taller, has much longer succulent leaves, and has more than one yellow flower at the top of the stalk, which usually have more than five petals.

Uniquely identifiable characteristics

Distinguishing Feature : Tastes peppery, hence the name biting. It contains alkaloids, so do not eat it. The sap is irritant to the skin.

Sedum Acre contains Sedamine, and Pelletierine, both Coniine-type piperidine alkaloids.


Sedamine is a piperidine alkaloid that is named after the Genus Sedum and which is found in Biting Stonecrop. Pelletriene is another piperidine alkaloid found in Biting Stonecrop which has great similarity to the deadly poison Coniine.

Pelletierine is also found in the roots of the Pomegranate plant. It is poisonous and was used medicinally in the 1800's to treat tapeworm infestations. Side effects may include dizziness, imperfect vision, faintness, numbness of extremities and occasionally convulsions. It has been likened to the effects of curare.

Sedridine is probably a minor piperidine alkaloid found in Biting Stonecrop.

Coniine is found in Hemlock Water-Dropwort (and not in Biting Stonecrop). It is shown here for comparison purposes only.


  Sedum acre  ⇐ Global Aspect ⇒ Crassulaceae  

Distribution
family8Stonecrop family8Crassulaceae

 BSBI maps
genus8sedum
Sedum
(Stonecrops)

BITING STONECROP

WALL-PEPPER

Sedum acre

Stonecrop Family [Crassulaceae]  

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