Callistachys lanceolata
Environmental Weed (2024)
Common names
oxylobium
Biostatus
Exotic
Category
Vascular
Structural class
Trees & Shrubs - Dicotyledons
Flower colours
Orange, Yellow
Detailed description
Tall shrub; twigs densely sericeous, angular. Leaves irregularly verticillate or opposite, finely sericeous above and below when young but almost glabrous above when older, entire, obovate to elliptic, acute to obtuse or slightly retuse, mucronate, 35~55mm long; midvein prominent; petiole 2~5mm long; stipules sericeous, linear, 2~4mm long. Infl. terminal, racemose, dense, with numerous flowers; pedicels 3~5mm long; bracts and bracteoles sericeous, deciduous. Calyx densely sericeous, teeth >=tube. Corolla orange-yellow, usu. with reddish markings, 10~15mm long. Pod densely sericeous, ribbed and very hard, dehiscent through the apex only, crescent-shaped, 6~8-seeded. 13~17mm long; seeds dull reddish black, scarcely strophiolate. (- Webb et. al., 1988)
Similar taxa
Silvery tall shrub, often not branching much, twigs angular with dense coverage of silky hair. Oval leaves tend to be upright. Conspicuous orange-yellow flower spikes with reddish markings, November. Pod half-moon shaped with 6-8 dull reddish black seeds (DoC, 1998).
Habitat
Terrestrial. Waste places, scrubland, often in sandy coastal sites (Webb et al 1988).
Conservation status
Not applicable
Detailed taxonomy
Family
Ecology
Flowering
November
Year naturalised
1931
Origin
West Australia
Reason for introduction
Ornamental
Life cycle and dispersal
Perennial.
Other information
Etymology
lanceolata: Lance-shaped
Environmental Weed (2024)
This plant is named in a list of 386 environmental weeds in New Zealand 2024 prepared by DOC. 759 candidate species were considered for inclusion on this new comprehensive list of environmental weeds in New Zealand. The species considered were drawn from published lists of weed species, lists of plants that must be reported or managed by law if observed, existing national and regional programmes and agreements for pest management, and species already managed by the Department of Conservation (DOC). Candidate species were then assessed to see if they were fully naturalised and whether they have more than minor impacts in natural ecosystems. Read the full report here.
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.
CALLAN