Species of plant
 ;templatestyles src="Template:Taxobox/core/styles.css" / ;
Ptilotus macrocephalus (commonly as "featherheads, green mulla mulla" or "green pussytails") is a native Australian perennial herb growing up to high. The species was originally described as "Trichinium macrocephalum" by Robert Brown in 1810 based on specimens from Victoria, Australia. In 1816, it was first transferred to the genus "Ptilotus" by Jean Louis Marie Poiret. While once considered distributed throughout most of the Australian mainland, current research limits the distribution of "P. macrocephalus" to south-eastern Australia, mostly in south-eastern South Australia, Victoria and New South Wales. A study by Hammer "et al." (2019) determined that specimens previously identified as "P. macrocephalus" are morphologically and ecologically distinct species, the now named "Ptilotus xerophilus" (arid central and western Australia) and "Ptilotus psilorhachis" (eastern Queensland).
"P. macrocephalus" has cream-green coloured ovoid flower heads. As with other green-flowered "Ptilotus" species (e.g. "Ptilotus nobilis"), they are thought to be predominantly pollinated by nocturnal moths.
References.
 ;templatestyles src="Reflist/styles.css" / ;