CHR 618113 – Euphorbia glauca G.Forst.
Data provider:
Allan Herbarium
Barcode:
CHR 618113
Specimen type:
Sheet
Database record added:
24 February 2012
Database record updated:
18 June 2022
Components
Primary component
Active identification
Determined name:
Euphorbia glauca G.Forst.
Determiner:
W.R. Sykes
Identification date:
2012-02-20 (Verbatim: 20 Feb 2012)
Preferred name:
Euphorbia glauca G.Forst.
Division:
Spermatophyta
Class:
Magnoliopsida
Order:
Euphorbiales
Family:
Euphorbiaceae
Identification type:
Determination
Collection events
Primary collection event
Collection event type:
Field
Standard locality
Location:
Max Mansons Covenant, Birdlings Flat
Verbatim locality:
Max Mansons Covenant, Birdlings Flat
Verbatim collector:
Alan McDonald
Standardised collector:
Alan McDonald
Verbatim date:
February 2012
Start date:
2012-02
Country:
New Zealand
Land District:
Canterbury Land District
Georeferences:
New Zealand Transverse Mercator:
1576103E 1576110N
Altitudes:
from 12m
Habitat:
The plants are growing in gravels interspersed in native Coprosma and Mulenbeckia and have pressures from various exotic weeds including boneseed, alyssum, pigs' ear, Senecio elegans.
Notes:
The plants extend for 5 m in clumps of varying sizes from one stem to multiple. Plants I estimate to be less than 3-4 years in age and are healthy, with new growth showing in each population, though no evidence of the whitefly that seems to associate itself with this particular species.Though the plants are less than 3 m from the Eastern fenceline I have surveyed all houses along the fenceline and there is no Euphorbia glauca present that could have acted as a seed source or vegetative source and the majority of the plants present across the fenceline and within Birdlings flat are of South African rather than New Zealand origin. A new fenceline was put in 3-4 years ago and a bulldozer graded a track along the strip where the E.glauca is presently growing. I suggest that the removal of height in gravel, on-going weed work to remove the exotic weeds present and the moist weather over the last few years have combined for the reestablishment of this species? This species may have been present in the covenant and when Hugh Wilson did his survey, though it might have been missed as cattle grazing had just been removed? The population shows signs of herbicide damage (with brown dead clumps present that had been sprayed) and upon speaking to one of the local landowners who does weed work in the covenant, he admitted that the plant had been previously sprayed as it was mistaken for a weed. According to Nick Heads the only other documentation of this species growing naturally in Canterbury was an unconfirmed sighting by Colin Burrows at Paua Bay Banks Peninsula in the 1970s. Images Available
Assigned reference numbers
Plant Identification Number:
2011/0511
Permissions
Project permits
Biocultural (BC) Notice
