Senecio crassiflorus explained

Senecio crassiflorus, in Portuguese: margarida-das-dunas, one of the native South American Senecio and an herbaceous dune dwelling perennial.^[1]

Description

Senecio crassiflorus is not an upright herb, the silvery to white woolly 20cm (10inches) to 50cm (20inches) tall plant tends to "lay down and rest" on the dunes and sandy coastal areas it inhabits.

Leaves: Shaped like spatula with roundish, long, narrow, linear bases to having a broad rounded apex and a tapering base. Mostly 4cm (02inches) to 8cm (03inches) long, 0.6cm (00.2inches) to 2cm (01inches) wide. The edges are smooth or toothed towards apex and both surfaces woolly.

Flowers: Broadly bell shaped, woolly flower heads appear singly or a few together, 1cm (00inches) to 1.5cm (00.6inches) in diameter.

Seeds and reproduction: Achenes 0.3cm (00.1inches) to 0.5cm (00.2inches); pappus 1.5cm (00.6inches) long.^[2]

Reports claim S. crassiflorus does not produce viable seeds and spreads itself asexually or via vegetative reproduction.^[1] ^[3]

Community species

Ipomoea pes-caprae

Hydrocotyle bonariensis

Juncus acutus^[1]

Panicum sabularum

Spartina cf. ciliata

Hydrocotyle umbellata^[4]

Colombian communities

In a remote sensing project for rapid ecological evaluation, S. crassiflorus was found in Colombia inhabiting two areas that were evaluated.^[5]

A flood prone coastal region:

Acanthospermum australe
Acicarpha tribuloides
Ambrosia tenuifolia
Androtrichium trigynum
Azolla sp.
Bacopa monnieri
Baccharis articulata
Cardionema ramosissima
Centella asiatica
Cephalanthus glabratus
Chenopodium retusum
Cuphea carthagenensis
Cynodon dactylon
Cyperus haspan
Cyperus virens
Enydra sessilis
Erechtites hieracifolia
Eryngium pandanifolium
Hedyotis salzmanii
Ischaemum minus
Juncus microcephalus
Nymphoides indica
Panicum racemosum
Paspalum nicorae
Petunia litoralis
Pluchea sagitalis
Polygonum punctatum
Pterocaulon sp.
Ranunculus apiifolius
Sesbania punicea
Solanum platense
Thelipteris interrupta
Xyris jupicai
Zizaniopsis bonariensis

A sandy area near to a forest:

Acanthospermun australe
Baccharis arenaria
Cynodon dactylon
Fragmites communis
Hydrocotyle bonariensis
Mikania micrantha
Myrcianthes cisplatensis
Oenothera sp.
Passiflora caerulea
Polygonum sp.
Salyx hunboldtiana
Sapium glandulosum
Schoenoplectus californicus
Sebastiania schottiana
Sesbania punicea
Theliptheris interrupta
Tillandsia aeranthos

Distribution

Native

Neotropic

Brazil: Brazil

Southern South America: Argentina, Uruguay

Current

Neotropic

Brazil: Brazil

Southern South America: Argentina, Uruguay

Australasia

Australia: New South Wales^[2]

New Zealand North: Wellington^[6]

External links

Web site: Cultivated Senecio crassiflorus . 2008-04-25 . 2003-10-12 . Tony .
Web site: Ngā Tipu o Aotearoa - New Zealand Plants . 2020-06-05 . Landcare Research . Landcare Research New Zealand Limited . New Zealand Plant Names Database . Landcare Research Allan Herbarium and New Zealand Plant Names Database.

Notes and References

Klein. Alecsandro Schardosim. Vanilde Citadini-Zanette. Robson Santos. September 2007. Florística e estrutura comunitária de restinga herbácea no município de Araranguá, Santa Catarina. PDF. Biotemas. es. 20. 3. 15–26. – 1643. 2008-04-25.
Web site: Senecio crassiflorus (Poir.) DC. . 2008-04-23 . National Herbarium of New South Wales . National Herbarium of New South Wales . . Royal Botanic Gardens, Sydney.
Web site: Scientific name : Senecio crassiflorus (Poir.) DC. . 2015-01-27 . Exotic Plant Life and Weeds . New Zealand Plant Conservation Network.
Thermal biology of Liolaemus occipitalis (Squamata, Tropiduridae) in the coastal sand dunes of Rio Grande do Sul, Brazil . Bujes . C. S. . Verrastro, L. . Brazilian Journal of Biology . 66 . 3 . August 31, 2006 . 10.1590/S1519-69842006000500021 . 945–54 . 17119843 . free. 10183/20651. free.
Web site: RAPID ECOLOGICAL EVALUATION FOR THE PROJECT ON THE USE OF REMOTE SENSING TECHNOLOGIES FOR ECOSYSTEM MANAGEMENT TREATIES . 2008-04-25 . Berlinc . Christian Niel . Rosario Beyhaut . Eduardo Marchisi . Nestor Pérez . Gonzalo Picasso . Carlos Prigioni . José Manuel Venzal . 17–23 October 2004 . Remote Sensing Technologies for Ecosystem Management Treaties . Bureau of Oceans and International Environmental and Scientific Affairs and United States Department of State.
Webb. C.J.. October 1987. Checklist of dicotyledons naturalised in New Zealand 18. Asteraceae (Compositae) subfamily Asteroideae. New Zealand Journal of Botany. 25. 4. 489–501. 10.1080/0028825x.1987.10410081. free.