Barnett Valley, Trip #72

We explored a short way up the Eastenders track, then looked at an eroding face at the bottom of the valley. The Port Hills has a layer of loess (deposits of windblown silt) over volcanic rock that readily erodes.

Below is some of what we saw:

Animals

Alexander beetle

This beetle was on the track as we were leaving; they are only found in Canterbury.

Alexander beetle (Megadromus antarcticus).

Sword-tailed cricket

Sword-tailed cricket (Metioche maorica).

 

Common rough woodlouse

Common rough woodlouse (Porcellio scaber).

Crab spider

Crab spider (Diaea ambara).

Grey house spider

Grey house spider (Badumna longinqua).
Grey house spider (Badumna longinqua).

Brown house spider

Brown house spider (Steatoda capensis).

Gastropods (slugs & snails)

Wilberforce –
the slow slimy slug slid slowly sideways
on a bed of slime” (CM)

Cellar snail?

Cellar snail (Oxychilus cellarius)?

Flatworm (Phylum Platyhelminthes)?

Not sure of the identification here – will update it later if we get any more information.

Land planarian

Land planarians (Family Geoplanidae).

Plants

Moss

Moss

Moss (Class Bryopsida).
Moss (Class Bryopsida).
Moss capsule.

Herbs

Capeweed

Capeweed (Arctotheca calendula).

Variegated thistle

Variegated thistle (Silybum marianum).
Flower head of variegated thistle (Silybum marianum).

Velvety nightshade

Velvety nightshade (Solanum chenopodioides).

Grasses

Brome

Brome (Bromus sp.).

Cock’s-foot

Cock’s-foot (Dactylis glomerata).
Cock’s-foot (Dactylis glomerata).

Ferns

Pig fern

Pig fern (Hypolepis ambigua).
Clusters of spores on the back of a leaf of pig fern (Hypolepis ambigua).

Vines

Scrambling pohuehue

Scrambling pohuehue (Muehlenbeckia complexa).

Pohuehue

Pohuehue (Muehlenbeckia australis).

Banana passionfruit

Banana passionfruit (Passiflora tripartita).

Weedy shrubs

We spotted quite a few weedy shrubs on this occasion, including pig’s ear, boneseed, sweet briar and gorse.

Pig’s ear

Pig’s ear (Cotyledon orbiculata).

Boneseed

Boneseed (Chrysanthemoides monilifera).

Sweet briar

Sweet briar (Rosa rubiginosa) and some gorse (Ulex europaeus).

Gorse

Gorse (Ulex europaeus).

Trees

Ngaio

Ngaio (Myoporum laetum).

Our thanks to the folk iNaturalist NZ for help with identifications.

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