Stereocaulon ramulosum

Stereocaulon ramulosum, commonly known as snow lichen, is a terricolous fruticose lichen belonging to the family Stereocaulaceae. It has cosmopolitan distribution. In the Australasian region, it is common in eastern Australia, New Zealand and has also been recorded at Lord Howe Island and Macquarie Island. Its habitat is often cooler, moist areas with a high level of cloud cover. It may be found on rocky ground or as an epiphyte on tree branches. Stereocaulon ramulosum was the first lichen known to contain an amylose polysaccharide. This species is unusual, as the fungal component is associated with two different chlorophyll forming species; usually there is only one. The more significant one is a green alga which gives the lichen its characteristic colour. The second is a cyanobacteria which is found in the cephalodia, a wart-like structure. Three different kingdoms are represented in this single life form; Fungi, Protista and Eubacteria. The generic name Stereocaulon is derived from ......read more on Wikipedia.