Pseudopanax colensoi var. colensoi
Common names
mountain fivefinger, three finger
Biostatus
Native – Endemic taxon
Category
Vascular
Structural class
Trees & Shrubs - Dicotyledons
Simplified description
Small much-branched tree with 5 fleshy leaflets arranged fanwise on very short stems
Flower colours
Cream, Green
Detailed description
Us. dioecious. Small multi-branched tree to 8 m tall, branchlets fleshy brittle. Leaves alternate, leaflets (3-)5(-7), palmate, subsessile or on short petiolules. Petioles 5-20 cm long, sheathing branchlet at base and with small erect stipule. Petiolules absent or short, of terminal leaflet to 0-5-10-(15) mm long, shorter on lateral leaflets, pale green, reddish at base. Leaflets narrow-ovate to broadly elliptic-oblong, cuneately narrowing to petiolule, thinly coriaceous, coarsely serrate-dentate in upper 2/3 - 3/4, acute to obtuse; midrib obvious above and below, lateral veins obscure; darker shiny green above; teminal lamina 5-17 x 2-11 cm, lateral leaflets decreasing in size. Inflorescence a terminal umbel; c. 8 primary rays (branchlets); 10-12 secondary rays; umbellules with 5-10 flowers in each. Calyx truncate or obscurely 5-toothed; flowers c. 5 mm diam.; petals 5, cream or greenish, ovate to triangular, acute; ovary 2-loculed, each containing 1 ovules; style branches 2. Fruit fleshy, 4-6 mm diam., style branches retained on an apical disc, dark purple when ripe. Seeds 2 per fruit, shallowly wrinkled, 2.9-4.3 mm long, rounded.
Similar taxa
Often confused with Pseudopanax arboreus, which also has 5 leaflets, from this species it can be distinguished by its shorter petiolules (leaflet stalk) and the base of the leaflet gradually narrowing to petiolule. The other varieties of Pseudopanax colensoi are distinguished their number of leaflets and distribution. The presence of a range of forms of probable hybrid arrangement at some sites can make identification difficult at times.
Distribution
Central North Island and Coromandel Range south to Banks Peninsula (and possibly Dunedin) on South Island east coast. Apparently absent from South Island West Coast. Plants with sessile leaflets from the Fiordland-Stewart Island area are often referred to Pseudopanax colensoi var. fiordensis Wardle
Habitat
Montane to low alpine forest and scrub
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2022-2023 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website. This report includes replaces all previous NZTCS lists for vascular plants. Previous assessments can be found here.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – these interim threat classification statuses has not been assessed by the NZTCS panel.
- Conservation status of vascular plants in Aotearoa New Zealand, 2023. 2024. Peter J. de Lange, Jane Gosden, Shannel P. Courtney, Alexander J. Fergus, John W. Barkla, Sarah M. Beadel, Paul D. Champion, Rowan Hindmarsh-Walls, Troy Makan and Pascale Michel Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2023 | Not Threatened
Detailed taxonomy
Family
Araliaceae
Synonyms
Panax colensoi Hook.f., Pseudopanax colensoi (Hook.f.) Philipson, Pseudopanax colensoi var. fiordensis Wardle, Neopanax colensoi (Hook.f.) Allan, Nothopanax (Hook.f.) Seem.
Taxonomic notes
Pseudopanax colensoi var. fiordensis remains poorly understood. It may yet prove distinct from P. colensoi s.s. but further study is required. Recently, Frodin, D.G. and Govaerts, R (2003: World Checklist and Bibliography of Araliaceae, The Cromwell Press, European Union) reinstated Neopanax based on molecular and morphological evidence. In their work they did not provide combinations of the varieties recognised by Peter Wardle in N. colensoi (as P. colensoi). So as to avoid potential confusion we retain Neopanax colensoi in Pseudopanax until this issue is rectified.
Endemic taxon
Yes
Endemic genus
Yes
Ecology
Flowering
October-March
Fruiting
October-March
Wetland plant indicator status rating
Information derived from the revised national wetland plant list prepared to assist councils in delineating and monitoring wetlands (Clarkson et al., 2021 Manaaki Whenua – Landcare Research Contract Report LC3975 for Hawke’s Bay Regional Council). The national plant list categorises plants by the extent to which they are found in wetlands and not ‘drylands’. The indicator status ratings are OBL (obligate wetland), FACW (facultative wetland), FAC (facultative), FACU (facultative upland), and UPL (obligate upland). If you have suggestions for the Wetland Indicator Status Rating, please contact: [Enable JavaScript to view protected content]
UPL: Obligate Upland
Rarely is a hydrophyte, almost always in uplands (non-wetlands).
Other information
Etymology
pseudopanax: False cure
colensoi: Named after William Colenso (7 November 1811 - 10 February 1899) who was a Cornish Christian missionary to New Zealand, and also a printer, botanist, explorer and politician.
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.
PSECVC
Chromosome number
2n = 48
Previous conservation statuses
2017 | Not Threatened
2012 | Not Threatened
2009 | Not Threatened
2004 | Not Threatened
Referencing and citations
References and further reading
Allan, H.H. 1961. Flora of NZ, Vol. I. Government Printer, Wellington
Wardle, P. 1968. The taxonomy and distribution of the stipulate species of Pseudopanax in New Zealand. NZ J. Botany 6: 226-236
Webb, C.J. & Simpson, M.J.A. 2001. Seeds of NZ gymnosperms and dicotyledons. Manuka Press, Christchurch.
Attribution
Description adapted from Wardle (1968), Allan (1961), Webb and Simpson (2001).
Some of this factsheet information is derived from Flora of New Zealand Online and is used under a Creative Commons Attribution 3.0 New Zealand licence.