Neville Walsh provides a nice overview of this revision in Muelleria 34: 63-67. With the publication of the first Asteraceae volume of the Flora of Australia, we now have a national perspective of the taxonomy of Microseris.
For many years, three distinct taxa have been recognised, but one of those has remained as an informal taxon only (Microseris sp. 3 or Microseris aff. lanceolata (Foothills)). This has been unfortunate, particularly given that, of the three entities involved, the informally recognised one has long been acknowledged as one of the most important food plants of aboriginal people of south-eastern Australia and for which the name Murnong has long been applied in Victoria.
The characteristic root system of Murnong, producing a plump, annually-replaced tuber, provides both the major food source and a critical taxonomic feature. The 'Murnong' form of M. lanceolata is a lowland, spring-flowering, summer dormant entity whereas montane to alpine forms (concordant with the type specimen of M. lanceolata) are summer-flowering and winter dormant. An existing name has been resurrected to describe Murnong - Microseris walteri - and the key to identification is provided below.