Vascular – Exotic
Dicotyledonous Herbs - Composites
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.
Terrestrial. Relatively open conditions are required for germination and establishment (West, 1996). Wasteland, roadsides, pastures, gardens, cultivated land, disturbed forest (Webb et al., 1988). Track edges, slips, barer ridges, under light gaps in the forest (West, 1996).
Taprooted biennial 50-150cm tall; stems branched and covered in fine cobweb-like hairs; prickles pale 4-10mm long; purple flowers 28-33mm long (Webb et al., 1988). The flowers are clustered at the end of the stem and the numerous wind-dispersed seeds (West, 1996).
November, December, January, February, March
Eurasia, N. Africa
cirsium: A kind of thistle
Reason For Introduction
Life Cycle Comments
Biennial. A rosette of leaves is formed in the first year of growth and a flower-bearing stem is formed in the second year (West, 1996).
Wind (West, 1996).