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Lactuca virosa

Silverstream, Upper Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 29/12/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Hutt River Trail north of Stokes Valley, Lower Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 03/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Hutt River Trail north of Stokes Valley, Lower Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 01/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Florets all ligulate. Hutt River Trail north of Stokes Valley, Lower Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 01/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Achene. Hutt River Trail north of Stokes Valley.<br>Photographer: Jeremy R. Rolfe, Date taken: 24/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Lactuca virosa.<br>Photographer: John Smith-Dodsworth, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.

Achene with pappus removed. Hutt River Trail north of Stokes Valley, Lower Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 24/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Cauline leaf. Silverstream, Upper Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 29/12/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Capitulum. Silverstream, Upper Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 29/12/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Immature inflorescence. Silverstream, Upper Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 29/12/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Florets all ligulate. Hutt River Trail north of Stokes Valley.<br>Photographer: Jeremy R. Rolfe, Date taken: 01/01/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Cauline leaves. Silverstream, Upper Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 29/12/2006, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Basal leaves - young rosette; on forest edge, Bushy Park, Whanganui.<br>Photographer: Colin C. Ogle, Date taken: 16/02/2017, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Amplexicaul leaf base of a cauline leaf; on forest edge, Bushy Park, Whanganui.<br>Photographer: Colin C. Ogle, Date taken: 16/02/2017, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

Stokes Valley, Lower Hutt.<br>Photographer: Jeremy R. Rolfe, Date taken: 04/02/2007, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by/4.0'>CC BY</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>

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Common names

acrid lettuce

Biostatus

Exotic

Structural class

Herbs - Dicotyledonous composites

Flower colours

Yellow

Conservation status

Not applicable

Detailed taxonomy

Family

Asteraceae

Authority

Lactuca virosa L.

Ecology

Year naturalised

1940

Origin

S., W., and C. Europe, Asia, N. Africa

Other information

Etymology

lactuca: From the Latin lac ‘milk’, referring to the white juice.

NVS code

The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.

LACVIR

Referencing and citations

References and further reading

Johnson, A. T. and Smith, H. A (1986). Plant Names Simplified: Their pronunciation, derivation and meaning. Landsman Bookshop Ltd: Buckenhill, UK.

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