Rhytidosporum procumbens, commonly known as White Marianth, is a small perennial plant of the pittosporum family, Pittosporaceae

Pittosporaceae

Pittosporaceae is a family of flowering plants. The family includes approximately 200 species of trees, shrubs, and lianas in 9-10 genera. The species of Pittosporaceae range from tropical to temperate climates of the Afrotropic, Indomalaya, Oceania, and Australasia ecozones.-Genera:* Auranticarpa...

. The species is endemic to south-eastern Australia. It has narrow leaves that are 5 to 20 mm long and 1 to 1.5 mm wide. White flowers appear in spring.

The species was first formally described in 1836 as Pittosporum procumbens by English botanist William Jackson Hooker

William Jackson Hooker

Sir William Jackson Hooker, FRS was an English systematic botanist and organiser. He held the post of Regius Professor of Botany at Glasgow University, and was the first Director of the Royal Botanic Gardens, Kew. He enjoyed the friendship and support of Sir Joseph Banks for his exploring,...

 in Companion to the Botanical Magazine. The species was transferred to the genus Rhytidosporum

Rhytidosporum

Rhytidosporum is a genus of flowering plants within the family Pittosporaceae.The species, which are endemic to Australia, include:*Rhytidosporum alpinum McGill.*Rhytidosporum diosmoides L.Cayzer, Crisp & I.Telford...

in 1862 by Victorian Government Botanist Ferdinand von Mueller

Ferdinand von Mueller

Baron Sir Ferdinand Jacob Heinrich von Mueller, KCMG was a German-Australian physician, geographer, and most notably, a botanist.-Early life:...

.