YARROW BROOMRAPE

Orobanche purpurea

Broomrape Family [Orobanchaceae]

month8jun month8june month8jul month8july

status
statusZnative
flower
flower8bicolour
flower
flower8purple
inner
inner8white
morph
morph8zygo
petals
petalsZ5
type
typeZspiked
type
typeZtubular
stem
stem8round
rarity
rarityZscarce

27th June 2009, near Freshwater, IoW. Photo: (CC by 2.0) Geoff Toone
Distinctively coloured flowers, differing in the blueness from all other Broomrapes.


7th June 2008, near Newport, IoW. Photo: (CC by 2.0) Ian Boyd
A guardian gnome looking after them.


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
The filligree leaves of the host it parasitises, Yarrow.


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
The lower lip of the flower has three lobes, the central the longer. the corolla tube also being blue-veined.


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
Lower flowers turn to fruit first.


1st June 2007, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
The calyx unusually for Broomrapes has 4 teeth, two can be seen here. No other Broomrape species has this feature. Short white hairs cover the plant.


1st June 2007, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
The white hairs also cover the flowers.


29th May 2008, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone


1st June 2007, near Shanklin, IoW Photo: (CC by 2.0) Geoff Toone
Distinctively again there are 2 small strap-shaped bracteoles at the base of the calyx (all other species of Broomrape have but one, which is longer)


Uniquely identifiable characteristics

Distinguishing Feature : For a Broomrape: the blue flowers

No relation to : Turnip-rape (Brassica rapa ssp. oleifera) [plants with similar names belonging to differing families].

Yarrow Broomrape can suddenly reappear in the same location after decades of absence, perhaps because the seeds have lain dormant awaiting opportunity (maybe awaiting the return of the host plant, Yarrow, if it has gone) or that the plants can subsist below ground without flowering for several years.

See the pull-out table below for comparisons with other Broomrapes and all their identifying and delineating characteristics.


OROBANCHE (BROOMRAPE) COMPARISON TABLE (shrunk)


  Orobanche purpurea  ⇐ Global Aspect ⇒ Orobanchaceae  

Distribution
 family8Broomrape family8Orobanchaceae

 BSBI maps
genus8Orobanche
Orobanche
(Broomrapes)

YARROW BROOMRAPE

Orobanche purpurea

Broomrape Family [Orobanchaceae]