astonii is found only at the southern tip of the North Island (Palliser Bay) and on the eastern side of the South Island from northern Marlborough to Birdlings Flat at the south-west edge of Banks Peninsula.
Muehlenbeckia florulenta | Muehlenbeckia australis | Muehlenbeckia horrida subsp. abdita | ''Muehlenbeckia horrida'' subsp. ''abdita'' | Muehlenbeckia |