Zygochloa

Zygochloa is a genus of rhizomatous perennial grasses endemic to Australia. It belongs to the tribe Triodieae, which is characterized by grasses adapted to arid and semi-arid environments. The genus consists of a single recognized species, Zygochloa paradoxa.

Zygochloa paradoxa, commonly known as Sandhill Cane-grass or Knottybutt, is found primarily in sandy habitats across inland Australia, particularly in the arid and semi-arid regions of Western Australia, South Australia, Northern Territory, Queensland, and New South Wales. It plays an important role in stabilizing sand dunes and providing habitat for native fauna.

The grass is characterized by its extensive rhizome system, which allows it to spread and colonize sandy soils. Its stems are robust and often branched, forming dense tussocks. The leaves are typically rigid and narrow, adapted to reduce water loss in dry conditions. The inflorescence is a panicle bearing spikelets that contain multiple florets.

Zygochloa paradoxa is well-adapted to fire, with the rhizomes allowing for regrowth after fire events. It is also tolerant of drought conditions and can withstand periods of low rainfall.

The name Zygochloa is derived from the Greek words "zygon" (yoke) and "chloa" (grass), likely referring to the shape of the plant's inflorescence or some other distinctive feature. The species name paradoxa refers to the unusual or unexpected characteristics of the plant.