PRICKLY SOW-THISTLE
ROUGH SOW-THISTLE
Sonchus asper
Daisy & Dandelion [Asteraceae] 
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Daisy & Dandelion [Asteraceae]
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_2011_04_28_EyeHosp_KnottBar_BridgewaterCanal_Home_222p2.jpg)
| 24th May 2011, Worsley, Gtr Mcr. | Photo: © RWD |
| Stout plant growing up to 1.5 metres it has narrow spiny glossy leaves and yellow Dandelion-type flowers. |
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| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Leaves narrower than those of Smooth Sow-Thistle, nor as deeply cut. |
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| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Leaves clasp the stem in a bending-over-backwards kind of fashion (un-like the almost right-angled clasp of Smooth Sow-Thistle. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_037p1.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Flowers a deeper shade of yellow than the much paler Smooth Sow-Thistle. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_040p3.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Flowers golden yellow, about an inch across. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_035p7.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Text goes here |
_2010_09_05_Wigan_Parbold_BurscoughBridge_040p0.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Text goes here |
_2010_09_05_Wigan_Parbold_BurscoughBridge_036p8.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Florets do not fade towards the periphery of the flower-head. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_033p6.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Leaves clasping the stem with rounded auricles adpressed against the stem. |
_2011_04_28_EyeHosp_KnottBar_BridgewaterCanal_Home_228p3.jpg)
| 24th May 2011, Worsley, Gtr Mcr. | Photo: © RWD |
| Very stout angular stem, with reddish streaks. Leaves with rounded auricles that are clasping the stem un-like Smooth Sow-Thistle. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_043p5.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Leaves not as deeply cut nor as broad as those of Smooth Sow-Thistle. |
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| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Instead, the leaves are not only doubly-toothed, but also crisped or wavy and spiny on the edges like they are in many thistles. |
_2010_09_05_Wigan_Parbold_BurscoughBridge_041p7.jpg)
| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Dandelion-type pappus with smooth-sided achenes. |
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| 5th Sept 2010, Leeds & L/pool canal, Appley Bridge. | Photo: © RWD |
| Smooth-sided achenes. |
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Easily confused with : sub-species Sonchus asper subsp. glaucescens (but that only grows in two separated hectads on the Mid-Wales coast) Hybridises with : Smooth Sow-Thistle (Sonchus oleraceus) to produce Sonchus asper × glaucescens. Easily confused with: Smooth Sow-Thistle, but that has pointed auricles whereas Prickly Sow-thistle sas rounded auricles which clasp the stem.
Some similarities to : Some resemblance to : Perennial Sow-thistle Like many Sow-Thistles, this too has a milky sap. ANY TEXT GOES HERE |
 Sonchus (Sow-Thistles) |
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Daisy & Dandelion [Asteraceae]
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