BULLWORT

Ammi majus

Carrot Family [Apiaceae]

month8jun month8june month8jul month8july month8aug month8sep month8sept month8oct

status
statusZcasual
flower
flower8white
morph
morph8hemizygo
petals
petalsZ5
type
typeZumbel
stem
stem8round
stem
stem8ribbed
toxicity
toxicityZmedium

16th Sept 2014, Portsdown Hill, Hampshire. Photo: © Dawn Nelson
A rather uncommon casual wool-alien plant found in waste places such as rubbish dumps. Grows to 1m high.


16th Sept 2014, Portsdown Hill, Hampshire. Photo: © Dawn Nelson
Umbels are compound with between 9 to 40 very thin long (between 3 to 7cm) rays not all equal length. The stalk supporting the umbel (i.e. the peduncle) is longer than the rays. The bracts beneath the main umbel are between 1/3 to 3/4 the length of the main rays and almost wire-like, thin, and divided into 3 about half-way along.


31st July 2014, Photo: © Bastiaan Brak


16th Sept 2014, Portsdown Hill, Hampshire. Photo: © Dawn Nelson
All the umbels have bisexual (aka hermaphroditic) flowers which are white. The flowers are only slightly zygomorphic (see those just below right of centre).


31st July 2014, Photo: © Bastiaan Brak
The flowers lack sepals beneath them (not that you would see any from above if there were).


16th Sept 2014, Portsdown Hill, Hampshire. Photo: © Dawn Nelson
The leaves are very variable. Upper leaves are usually 2-pinnate with lanceolate to linear leaflets which are often deeply toothed and acute. [The large leaves either side are of another plant]. the lower leaves (non visible in these photos) are only between single to doubly-pinnate.


31st July 2014, Photo: © Bastiaan Brak
Upper leaves doubly pinnate.


31st July 2014, Photo: © Bastiaan Brak
Leaves on long grooved stalks like miniature roof gutters.


31st July 2014, Photo: © Bastiaan Brak


31st July 2014, Photo: © Bastiaan Brak
Upper leaf teeth deeply toothed and acute. Leaf stalks with a groove.


31st July 2014, Photo: © Bastiaan Brak
The fruits in compound umbels.


31st July 2014, Photo: © Bastiaan Brak
Fruits small 1.5-2mm and ellipsoidal in plan.


31st July 2014, Photo: © Bastiaan Brak


31st July 2014, Photo: © Bastiaan Brak
The bracteoles beneath the umbeletts are numerous and usually lanceolatebut with broad thin and straw-coloured edges. The fruit are on thin stalks between 1 to 6mm long and slightly rough to the touch.


31st July 2014, Photo: © Bastiaan Brak
The thin white styles with their tiny globular stigma emerge from the top of the fruit and splay outwards - are about twice as long as the white carpophore they 'seem' to emerge from [see fruit on far left]. The green fruits feel smooth.


31st July 2014, Photo: © Bastiaan Brak
The main stem has many fine grooves or striations along it.


Not to be semantically confused with : Bullate Contoneaster (Cotoneaster rehderi) or Bullace (aka Damson) (Prunus domestica subsp. insititia) [a plant with similar name]

An umbellifer that is not native to the UK and is fairy rare here, (but a 'rare' rating is not counted for plants which are not native). It is an umbellifer. See captions for characteristics.


  Ammi majus  ⇐ Global Aspect ⇒ Apiaceae  

Distribution
 family8Carrot family8Apiaceae

 BSBI maps
genus8Ammi
Ammi
(Bullworts)

BULLWORT

Ammi majus

Carrot Family [Apiaceae]