''Seorsus'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Myrtaceae Myrtaceae (), the myrtle family, is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, and eucalyptus are some notable members of this group. All ...

. The occurrence of the four species in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

and

Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

is widely spaced, and is thought to be indicative that the genus predates the breakup of

Gondwana Gondwana ( ; ) was a large landmass, sometimes referred to as a supercontinent. The remnants of Gondwana make up around two-thirds of today's continental area, including South America, Africa, Antarctica, Australia (continent), Australia, Zea ...

. Species include: *'' Seorsus aequatorius'' Rye & Trudgen - endemic to

West Kalimantan West Kalimantan () is a province of Indonesia. It is one of five Indonesian provinces comprising Kalimantan, the Indonesian part of the island of Borneo. Its capital and largest city is Pontianak. It is bordered by East Kalimantan and Central ...

. *'' Seorsus clavifolius'' (C.A.Gardner) Rye & Trudgen (syn. ''

Astartea ''Astartea'' is a genus of flowering plants in the myrtle family, Myrtaceae. The genus is endemic to southwestern Western Australia. The genus name was inspired by Astarte, the Greek name for the goddess Ishtar.Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

*'' Seorsus intratropicus'' (F.Muell.) Rye & Trudgen (syn. ''

Baeckea ''Baeckea'' is a genus of flowering plants in the myrtle family, Myrtaceae, all but one endemic to Australia. Plants in the genus ''Baeckea'' are shrubs or small trees with leaves arranged in opposite pairs, white to deep pink flowers with five s ...

intratropica'') - endemic to the

Northern Territory The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...

. *'' Seorsus taxifolius'' (Merr.) Rye & Trudgen (syn. ''Baeckea taxifolius'', ''

Babingtonia ''Babingtonia'' is a genus of 11 species of flowering plants in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. Plants in the genus ''Babingtonia'' are glabrous shrubs with simple linear, lance-shaped or elli ...

taxifolia'') - endemic to

Sarawak Sarawak ( , ) is a States and federal territories of Malaysia, state of Malaysia. It is the largest among the 13 states, with an area almost equal to that of Peninsular Malaysia. Sarawak is located in East Malaysia in northwest Borneo, and is ...

in Borneo.

References

Myrtaceae Myrtaceae genera Taxa named by Barbara Lynette Rye Taxa named by Malcolm Eric Trudgen {{Myrtaceae-stub