Vegging Out. Part 2.

Continuing getting to grips with vegetative plant identification.

Attempt #2. Petty Spurge.

Buoyed on by my success with the dandelion in my previous blog I ventured once again into my back yard with the aim of attempting to use The Vegetative Key to the British Flora to identify the first plant I saw. This meant ignoring 3 more dandelions for the sake of variety but in just a few steps I came across this unassuming little thing…

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I thought it might be petty spurge when I saw it. I don’t know spurges very well but I vaguely remember someone telling me once that a plant that looks a bit like this was petty spurge so I had an idea what it might be. Less confident than the dandelion which seemed appropriate for my next attempt.

The key took me through the following features (my descriptions below are not always direct quotes from the key):

    • Leaves simple
    • Leaf margin entire
    • Leaves with pinnate veins
    • Leaves alternate. This took me to Key K.
    • It’s a herb
    • Latex present:

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As you can see the latex is obvious (please excuse the close up of my thumb nail. I googled what ridges mean on finger nails and apparently it’s a sign of age. I am in my mid thirties which apparently is the age you start getting all gnarley).

  • Leaves all on stems but never clasping with auricles (Euphorbia). This is encouraging as spurges are in the Euphorbia genus. On to Key KH.
  • Leaves hairless
  • Leaves >2mm wide
  • Plant green. Ruderal.
ruderal
ˈruːd(ə)r(ə)l/
BOTANY
adjective
  1. 1.
    (of a plant) growing on waste ground or among rubbish.
noun

While I bristle slightly at this apparent slur on my back yard I accept it’s a green ruderal.

  • Annual with vertical tap root. This kind of feature could cause me problems when I’m carrying out surveys for my upcoming urban botany project in which I intend not to kill any specimens while identifying them, but for now while I’m learning I allowed myself to pluck this one up…

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And I was encouraged to see a pleasingly vertical, tap root.

  • This gets you to Petty Spurge (Euphorbia peplus).

This is easy, I thought. And I was of course quickly proved wrong. My next attempt was frustrating but useful. Blog to follow…

Thanks for reading. If you disagree with my IDs or have thoughts on the subject please comment. All feedback welcome.

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