Is the tall one also tutukiwi, just going to seed, or a different spp?
The excellent dune swale north of Waikawa Stream is fronted by a double row of dunes heavily dominated by marram right up to the dune front. The invertebrate life in the foredunes is minimal.
probably m. unifolia but i'm not an expert. found a home in almost no soil at all in the pak n save parking lot. i had no idea our native orchids were this resilient
just starting to flower. Under totara and matai. Thanks @lobotaniser