Thistles of Adur
2004


Photograph by Andy Horton
Creeping
Carline (dead)
Musk
Carduus nutans
Common Darter (Photograph by Andy Horton)
Stemless Thistle close-up  (Photograph by Andy Horton)
Dwarf Thistle on the lower slopes (Photograph by Andy Horton)
Creeping
Cirsium arvense
Dwarf (=Stemless)
Dwarf (=Stemless)
Photograph by Ray Hamblett
Dwarf Thistle on the lower slopes (Photograph by Andy Horton)
Thistle ???
Spear
Cirsium vulgare
Dwarf (=Stemless)
Carduus acaulis
Dwarf (=Stemless)
Carline
Creeping
Carline (short plant) on the lower slopes of Mill Hill
Photograph by Ray Hamblett
Carline
Carline
Carlina vulgaris
Carline
Lesser Burdock 
Arctium minus 
Prickly Sow-thistle
Sonchus asper
Prickly Sow-thistle
Sonchus asper
Musk Thistle
Musk Thistle

Musk Thistle, Carduus nutans


Welted Thistle
Carduus crispus
Musk Thistle
Carduus nutans
Musk
Carduus nutans

 
Welted Thistle
Carduus crispus
Welted Thistle
(Flash photograph)
Welted Thistle

It was seen in the scrub in the north-west of Mill Hill.


2005


Cotton Thistle, Onopordon acanthium, in the cattle pasture to the east of Mill Hill
 Cotton Thistle, Onopordon acanthium, in the cattle pasture to the east of Mill Hill. This is a naturalised alien plant over a metre in height.
June 2005

Thistle ID by Ray Hamblett
(Lancing Nature)

Creeping Thistle
Musk Thistle 

(Mill Hill)

12 July 2005
Cotton Thistle, Onopordon acanthium
Cotton Thistle
3 July 2005
Cotton Thistle, Onopordon acanthium, in the cattle pasture to the east of Mill Hill
12 July 2005
Cotton Thistle, Onopordon acanthium, in the cattle pasture to the east of Mill Hill
Slender Thistle
Welted Thistle from Lancing Clump
Stemless Thistle Seed Head
from the Mill Hill Reservour Area (north)
Slender Thistle from 
Lancing Beach near Widewater

2 September 2016
 

Welted Thistle
Carduus crispus
Upper Beeding, Cyclepath edge near the river


Animals (Invertebrates) on Thistles


 
 

21 June 2009
On a breezy mostly overcast day the most interesting observation were twenty or more small bees on the flower heads of the Musk Thistle on the side of the path as it runs past the Reservoir on the southern part of Mill Hill.
It looks like a female Osmia spinulosa to me.
Bee ID by Stuart Roberts
Adur Bees 2009
8 July 2007
Musk Thistle was beginning to go to seed on Mill Hill

Reports 2008

21 July 2008
 
Harlequin Ladybird
A Common Blue on Creeping Thistle A male Common Blue Butterfly on a seeding Creeping Thistle on the Coastal Link Cyclepath south of Old Shoreham on 21 August 2008.

A study of  Creeping Thistle






28 September 2008
Carline Thistle was in all three forms, the dead plants were grey including the leaves, the new growths have orange heads and green leaves, but some of the orange heads were furring up and the prickly leaves were turning brown.

September 2008
 
Carline Thistle (Late)

In the study above, we see Carline Thistle in the central photograph still with green leaves before they turn orange and then brown.

August 2008
 

July 2008
 
28 July 2008

In this study of Carline Thistle we see the old dead plants still in place as the new growths first appear on the lower slopes of Mill Hill

11 July 2008
Five species of thistlewere recorded in flower on Mill Hill including the first Stemless Thistle of the year on the lower slopes, as well as Spear Thistle, Welted Thistle, the impressive Musk Thistle and the ubiquitous Creeping Thistle.
Musk Thistle and Ox-eye Daisies on the upper part of the lower slopes, just below the ridge, north-west of the Reservoir
26 May 2008
The first thistle of the year was seen in flower on the towpath a few metres north of Old Shoreham Toll Bridge. This was a Welted Thistle, Carduus crispus.

Broader heads, darker flowers, gap in stem-spines just below flower head, compared to the Slender Thistle.

Comments by Malcolm Storey (Bioimages)
Cardueae (“thistles”) on Bioimages
Carduus crispus on Bioimages

Carduus tenuiflorus Curtis (Slender Thistle) on Bioimages
 

SMOOTH SOW-THISTLE



SHOREHAM LIST:

Arctium lappa    GREATER BURDOCK
Arctium minus   LESSER BURDOCK
Carduus crispus   WELTED THISTLE
Carduus nutans   MUSK THISTLE
Carduus tenuiflorus   SLENDER THISTLE
Carlina vulgaris   CARLINE THISTLE
Cirsium acaule    STEMLESS or DWARF THISTLE
Cirsium arvense    CREEPING THISTLE
Cirsium palustre    MARSH THISTLE
Cirsium vulgare   SPEAR THISTLE
Onopordum acanthium   COTTON THISTLE
Silybum marianum    MILK THISTLE
Sonchus arvensis   PERENNIAL SOW THISTLE
Sonchus asper   PRICKLY SOW-THISTLE
Sonchus oleraceus   SMOOTH SOW-THISTLE
 

Genera in the Asteraceae with the word thistle often used in their common names include:

Arctium – Burdock
Carduus – Musk Thistle and others
Carlina – Carline thistle
Centaurea – Star thistle
Cicerbita – Sow thistle
Cirsium – Common Thistle, Field Thistle and others
Cnicus – Blessed thistle
Cynara – Artichokes, Cardoon
Echinops – Globethistle
Notobasis – Syrian thistle
Onopordum – Cotton thistle, also known as Scots thistle or Scotch thistle
Scolymus – Golden thistle or oyster thistle
Silybum – Milk thistle
Sonchus – Sow thistle

From Wikipedia

Flora of Shoreham-by-Sea (List)



cf. Marsh Thistle

Adur Nature Notes 2008