New Zealand Plant Conservation Network
  • Member login
  • Join
Facebook
  • Home
  • Flora
    • Flora species
    • Vascular
    • Non Vascular
    • Plant identification
    • Fungi
    • Make your own book
    • Quiz
  • Threats
    • Exotic Plants (Weeds)
    • Pest Animals
    • Other threats
  • Ecosystems
    • Plant communities
    • Ecosystem services
    • Novel ecosystems
  • Publications
    • Plant lists
    • Botanical Society journals
    • Newsletter
    • NZPCN publications
    • Documents
  • Conservation
    • Seedbank
    • Training
    • Restoration
    • Monitoring
    • Habitat protection
    • Funding
    • Botanic gardens
  • NZPCN
    • Members
    • Council members
    • Awards
    • David Given Scholarship
    • Events
    • Shop
    • Favourite Plant
    • Join
    • News
    • Donate
    • Trilepidea newsletter
    • Why join NZPCN?
  • Contact us
  • Help
    • FAQ
    • Query
    • Glossary

Search flora

You are here:
  1. Home
  2. Flora
  3. Flora species
  4. Senecio sterquilinus

Senecio sterquilinus

Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Western reef.<br>Photographer: Peter J. de Lange, 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>
Western Reef.<br>Photographer: Peter J. de Lange, 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>
Makaro Island.<br>Photographer: Peter J. de Lange, 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>
Mokopuna Island.<br>Photographer: Gillian M. Crowcroft, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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 showing involucral bracts. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Capitula showing involucral bracts. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Capitula. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Achenes. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Developing achenes. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Developing achenes. Matiu/Somes Island.<br>Photographer: Jeremy R. Rolfe, Date taken: 22/11/2011, 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>
Download PDF Comment on factsheet

NZPCN members can select up to 20 plant species and automatically create a full colour, fully illustrated A4 book describing them (in PDF format).

  • Find out more...
  • Join NZPCN...
Find in plant lists
iNaturalist NZ View observations Te Papa View specimens Flora of NZ Click here to view Donate Support NZPCN

Common name

guano groundsel

Synonyms

Senecio lautus var. á macrocephalus Hook.f.

Family

Asteraceae

Authority

Senecio sterquilinus Ornduff

Flora category

Vascular – Native

Endemic taxon

Yes

Endemic genus

No

Endemic family

No

Structural class

Herbs - Dicotyledonous composites

Chromosome number

2n = 40

Current conservation status

  • Conservation status of New Zealand indigenous vascular plants, 2017

The threat classification status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.

Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.

2017 | At Risk – Relict | Qualifiers: RR

Previous conservation statuses

2012 | At Risk – Relict | Qualifiers: RR

2009 | At Risk – Relict | Qualifiers: RR

2004 | Range Restricted

Distribution

Endemic. North, South and Chatham Islands. Known from Stack H (Mokohinau islands group), Hawkes Bay (extinct), Matiu/Somes, Makaro/Ward, Brothers and Stephens islands in the Cook Strait. Also on the West Coast from Cape Foulwind south to Point Elizabeth. Around Wellington Harbour this species is occasionally seen at Petone Beach and Evans Bay. On the Chatham Islands it has been recently (2006) collected from the Forty Fours, Sisters and Western Reef

Habitat

A strictly coastal species usually found growing in the vicinity of sea bird nesting grounds or seal haul outs. Often found growing out of thick guano deposits on sparsely vegetated rock stacks dominated by sea birds.

Features

Annual to short-lived perennial, subsucculent, fleshy to succulent herb, forming densely branched, somewhat sprawling plants up to 0.6 x 0.6 m. Basal stem woody, purple-red or purple, glabrous, rest of stem purple, purple-green or green, sparsely covered with cobwebby hairs. Leaves fleshy, subsucculent to succulent, sparsely to moderately cobweb-hairy, especially on the undersides, often more densely so on emergent leaves, becoming glabrate to glabrous, cuneately narrowed to seed, amplexicaul, 30-200 x 10-80 mm, dark green and glossy above, paler green or purple-green below, elliptic to ovate or rhomboid, usually pinnately lobed to pinnatisect with very broad pinnately lobed or deeply toothed segments, rarely crenate to entire. Upper most leaves similar but smaller, usually less divided, base shortly and broadly cuneate, amplexicaul. Supplementary bracts and calycular bracteoles 9-30, 1.5-8 mm long. Involucral bracts 13-21, glabrescent to glabrous, 6-12 mm long. Ray florests 13-28; ligules dark yellow, closely spaced or overlapping, 3-10 mm long. Disc yellow 10-25 mm diameter. Cypsela 2.5-3.0 mm long, dark brown, dark purple-brown to black-brown, narrowly oblong to narrowly oblong-elliptic, scarcely narrowed at apex, base cuneate; ribs broad and rounded; grooves narrow to u-shaped; hairs retrorse in 4-10 rows filling grooves, often obscuring ribs as well. Pappus 5-6 mm long, white, caducous.

Similar taxa

Senecio lautus Willd. subsp. lautus is frequently sympatric with S. sterquilinus and could be potentially be confused with it. From S. sterquilinus, S. lautus subsp. lautus differs by its usually smaller growth habit, finer more divided leaves, and fewer involucral bracts (up to 15, mostly 10-13 cf. up to 25, mostly 18-21), and somewhat smaller seeds (2.2-3.0 cf. 2.5-3.0). Both species are clearly closely related, have the same chromosome number (2n = 40) and putative hybrids have been collected. On the Chatham Islands S. sterquilinus has been found growing with the endemic S. radiolatus F.Muell. subsp. radiolatus from which its distinction can be difficult, particularly with glabrescent forms of S. radiolatus. From that species S. sterquilinus differs by its smaller, more widely spreading habit, very fleshy/succulent glabrescent leaves which lack lanate hairs, greater number of ray florets 13-28 cf. 10-20.

Flowering

July - June

Flower colours

Yellow

Fruiting

July - June

Propagation technique

Easy from fresh seed. A strict anuual which thrives in very fertile (high N, P, K) damp soil in full sun. This species, along with S. radiolatus F.Muell was trialled in annual flower beds in parts of Lower Hutt during 1991, it was very succesful and popular with the public. The large, yellow flower heads often completely cover the plant.

Threats

A vulnerable herb of very restricted and probably relict distribution. Abundant at most of its known localities and seemingly dependant on sea bird guano to thrive. This makes it very vulnerable to any decline in nesting/roosting sea birds.

Etymology

senecio: From the Latin senex ‘old man’ (probably referring to the bearded seeds)

Where To Buy

Not commercially available

Attribution

Fact Sheet prepared for NZPCN by P.J. de Lange 1 November 2008. Description based on Webb et al. (1988) supplemented by observations obtained from fresh specimens and herbarium material

References and further reading

Webb CJ, Sykes WR, Garnock-Jones PJ 1988. Flora of New Zealand. Vol. IV. Botany Division, DSIR, Christchurch

NZPCN Fact Sheet citation

Please cite as: de Lange, P.J. (Year at time of access): Senecio sterquilinus Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/senecio-sterquilinus/ (Date website was queried)

▲ Back to top
  • Home
  • Flora
  • Threats
  • Ecosystems
  • Publications
  • Conservation
  • NZPCN
  • Contact us
  • Help

© 2023 New Zealand Plant Conservation Network • Website by RS

Coastlands Plant Nursery Wildlands

Website sponsor

  • Home
  • Flora
    • Flora species
    • Vascular
      • Ferns
        • King fern
        • True ferns
        • Adder's tongue ferns
        • Fork ferns and whisk ferns
        • Horsetails
      • Conifers
        • Celery pines
        • Kauri
        • Podocarps
          • Podocarpus
          • Dacrydium
          • Prumnopitys
          • Dacrycarpus
          • Halocarpus
          • Lepidothamnus
          • Manoao
        • Cypress
      • Flowering plants
        • Parasites
          • Leafy mistletoes
          • Pygmy mistletoes
            • Korthalsella hosts
            • Dispersal of Korthalsella
            • Korthalsella flowers
            • Associates of Korthalsella
          • Root parasites
          • Saprophytes
        • Epiphytes
          • NZ
            • Typical
            • Occasional
            • Hemi-epiphytes
            • Ephemeral
            • NZ list
        • Monocots
          • Orchids
            • Structure
          • Grasses
        • Dicots
          • Hebes
          • Kowhai
          • Coprosma
          • Beech
          • Rata
        • Carnivorous
        • Deciduous plants
        • Aquatic plants
      • Poisonous natives
      • Threatened plant lists
      • What's a vascular plant?
      • Club mosses
    • Non Vascular
      • Bryophytes
        • Liverworts
        • Mosses
        • Hornworts
      • Algae
        • Seaweeds
      • Lichens
    • Plant identification
      • Written descriptions
      • Experts
      • Plant keys
        • Key to parasitic plant genera
      • Collecting plants
        • Should I collect
        • Choosing a specimen
        • Field notes
        • Fresh plant material
        • Pressing and drying
        • Mounting specimens
        • Labelling specimens
    • Fungi
    • Make your own book
    • Quiz
  • Threats
    • Exotic Plants (Weeds)
      • Unwanted organisms
      • DOC weeds
      • Plant me instead
      • Pest Plant Accord
    • Pest Animals
      • Mammals
        • Mustelids
        • Rodents
        • Ungulates
        • Possums
      • Fish
      • Insects
    • Other threats
      • Natural events
        • Insects
      • Human induced
        • Habitat loss
        • Collection
        • Climate change
  • Ecosystems
    • Plant communities
      • Dunes
        • Volcanic
        • Coastal
          • Pingao research
          • What you can do
          • Common species
          • Research on dunes
          • Threats
      • Wetlands
        • Estuaries
          • Common estuarine species
          • Research on estuaries
        • Ephemeral
        • Restiad peat bogs
      • Forests
        • Kauri-podocarp-broadleaved
        • Podocarp broadleaved
        • Beech
      • Scrub/shrublands
        • Geothermal
          • Distribution of geothermal vegetation
          • Geothermal plants
          • Geothermal vegetation types
          • Threats to geothermal vegetation
        • Frost flat/hollow
        • Manuka fens
        • Gumlands
      • Grasslands
        • Tussock grasslands
      • Bare ground
        • Braided rivers
        • Alpine
        • Cliff
        • Scree and boulderfields
        • Shingle beaches
      • Herbfields
        • Saltpan
    • Ecosystem services
    • Novel ecosystems
  • Publications
    • Plant lists
      • How to prepare a plant list
      • National plant lists
      • Plant lists by region
      • Search plant lists
    • Botanical Society journals
    • Newsletter
    • NZPCN publications
    • Documents
  • Conservation
    • Seedbank
      • Project 2 - Alpine flora and the Forget-Me-Nots
      • Project 3 - Kowhai and its relatives
      • Project 1 - Pohutukawa, Rata and Myrtaceae
      • Project 4 - Podocarps and trees of the forest
    • Training
      • Module 1: Plant life
      • Module 2: Covenants
      • Module 3: Propagation
      • Module 4: Wetlands
      • Pilot course 2006
    • Restoration
      • Gardening
        • Being weed wise
        • Garden plants
          • Ferns
          • Climbers
          • Trees and shrubs
          • Broad-leaved herbs
          • Grass-like herbs
        • Attracting wildlife
        • Planting for lizards
          • Rules
      • Species recovery
        • Plant translocations
      • Ecological restoration
        • Case studies
          • Tavora Reserve
          • Waiwhakareke
      • Revegetation
      • Eco-sourcing
      • Find a restoration group
    • Monitoring
      • Number count
        • Number count method
        • Pros and cons of number counts
        • Data analysis and interpretation
      • Presence/absence surveys
        • Presence/absence survey methods
        • Pros and cons of presence/absence surveys
        • Data analysis and interpretation
      • Mapping spatial extent
        • Pros and cons of spatial extent mapping
        • Data analysis and interpretation
        • Spatial extent mapping methods
      • Photo points
        • Photo point guidelines
    • Habitat protection
      • Legal protection
        • Nga Whenua Rahui
        • QEII covenants
        • DOC Covenants
      • Animal pest control
      • Weed control
      • Fencing
    • Funding
    • Botanic gardens
  • NZPCN
    • Members
    • Council members
      • Council 2009
      • Council 2010
      • Council 2011
      • Council 2012
      • Council 2013
      • NZPCN council member profiles
      • Council 2003
      • Council 2004
      • Council 2005
      • Council 2006
      • Council 2007
      • Council 2008
      • Council 2014
      • Council 2015
      • Council 2016
      • Council 2017
      • Council 2018
      • Council 2019
      • Council 2020
      • Council 2021
      • Council 2022
      • Council 2023
    • Awards
      • NZPCN Awards
        • 2018
        • 2016
        • 2015
        • 2014
        • 2013
        • 2012
        • 2011
        • 2010
        • 2009
        • 2008
        • 2007
        • 2006
        • 2005
        • 2017
        • 2019
        • 2022
    • David Given Scholarship
      • David Given Scholarship Recipients
    • Events
      • Conference 2019
      • Conference 2017
      • Conference 2015
        • Speakers
        • Workshops
        • Field trips
        • Charity auction
      • Conference 2013
        • Speakers
        • Timetable
      • Conference 2022
        • 2022 conference field trips
        • 2022 conference workshops
        • Code of conduct
        • 2022 conference sponsors
        • COVID-19 information
        • Abstract and poster submission
        • 2022 Conference venue and accommodation
        • 2022 conference postponement
        • Conference Workshop: Restoration Pathways
        • Conference programme summary
      • 2023 Restoration Pathways Workshop
    • Shop
    • Favourite Plant
    • Join
    • News
    • Donate
    • Trilepidea newsletter
    • Why join NZPCN?
  • Contact us
  • Help
    • FAQ
      • The Network
      • Network website
      • New Zealand plants
      • The law
      • Your discoveries
      • Joining the Network
    • Query
    • Glossary