Lepidium

Danziger’s new Green Dragon, a delicate and airy Lepidium, is a unique green filler for flower arrangements that blends harmoniously in any centerpiece or bouquet. Green Dragon has a heavier stem than other lepidiums, which won’t tangle with each other, ultimately decreasing breakage.

There are about 175 different Lepidiums, no doubt some native to your area and some imported.

Many of the native lepidiums are rare or restricted in distribution, and some have become extinct. […] Aborigines in South Australia steamed bundles of lepidium leaves in earthen pits.