Atherospermataceae

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Magnoliids
Ordo: Laurales

Familia: Atherospermataceae
Genera: Atherosperma – Daphnandra – Doryphora – Dryadodaphne – Laurelia – Laureliopsis – Nemuaron
Name

Atherospermataceae R.Br. ex Flinders

Type genus: Atherosperma Labill. Novae Holl. Pl. Spec. 2: 74. (1806)

References

Brown, R. 1814. A Voyage to Terra Australis 2: 553.
International Plant Names Index. 2016. Atherospermataceae. Published online. Accessed: Sept. 3 2016.
Renner, S.S., Foreman, D.B. & Murray, D. 2000. Timing transantarctic disjunctions in the Atherospermataceae (Laurales): evidence from coding and noncoding chloroplast sequences. Systematic Biology 49(3): 579-591. DOI: 10.1080/10635159950127402 Full text PDF Reference page.
Stevens, P.F. 2001 onwards. Angiosperm Phylogeny Website. Version 14, July 2017 [and more or less continuously updated since]. Online. Reference page.
Tropicos.org 2016. Atherospermataceae. Missouri Botanical Garden. Published online. Accessed: 3 Sept. 2016.

Vernacular names
català: Aterospermatàcies
日本語: アセロスペルマ科
한국어: 남방찰과
polski: Oboczkowate
русский: Атероспермовые
中文: 香皮檫科

The Atherospermataceae, commonly known as the southern sassafrases, are a family of broadleaf evergreen trees and shrubs. The family includes 14 species in seven genera. The atherosperms are today mostly distributed in the Southern Hemisphere, with two species native to southern Chile and 12 species native to Australasia. Wood is commercially harvested from rainforest species of this family, and is used both in construction and in fine cabinet making.

Ecology

These trees and shrubs are characteristic of the lower strata of the tropical rainforest, except Dryadodaphne species, which belong to the rainforest high canopy. The glands at the base of the stamens secrete nectar in Laurelia novae-zelandiae, which accumulates at the base of the flower and attracts bees, beetles and bee flies. The seed, in the form of a feathery achene, is dispersed by wind (anemochory).

The wood of Laurelia has local interest for construction, particularly the Chilean Laurelia sempervirens, despite its lack of resistance to moisture. Essential oils extracted from the leaves and bark of species of Doryphora have application in perfumery and pharmaceuticals.[1]
Evolution

The Atherospermataceae have in the past been treated as a subfamily (Atherospermatoideae) of the Monimiaceae. Recent reassessment of both morphological and molecular characters, however, show them to be more clearly related to the Gomortegaceae and Siparunaceae. The Angiosperm Phylogeny Website considers them to be a family of their own (as the Atherospermataceae), and together with the Gomortegaceae and Siparunaceae form a distinct branch of the Laurales.

A clade made up of Doryphora and Daphnandra, from the Australian states of Queensland and New South Wales, is considered sister to the rest of the family. The remaining genera (Atherosperma, Dryadodaphne, Laurelia, Laureliopsis, and Nemuaron) are considered by some to be more advanced evolutionarily.[2]

The atherosperm fossil record, which goes back to the Upper Cretaceous, includes pollen, wood, and leaf fossils from Europe, Africa, South America, Antarctica, New Zealand, and Tasmania. The family is recognized in Antarctic fossils from the Cretaceous to the lower Tertiary (about 88 Mya). Fossil pollen of Laurelia has been attributed to the middle Oligocene of New Zealand, as well as the Eocene-Oligocene and Early Miocene of Argentina and Seymour Island. Calibration of rbcL substitution rates within the fossils suggests an initial diversification of the family at 100-140 Mya, probably in West Gondwana, early entry into Antarctica, and long-distance dispersal to New Zealand and New Caledonia at 50-30 Mya by the ancestors of Laurelia novae-zelandiae and Nemuaron.
Species

Atherosperma moschatum (Tasmania, Victoria and New South Wales)
Atherosperma moschatum subsp. integrifolium (New South Wales)
Daphnandra apatela (Queensland and New South Wales)
Daphnandra johnsonii (New South Wales)
Daphnandra micrantha (New South Wales)
Daphnandra melasmena (New South Wales)
Daphnandra repandula (Queensland)
Daphnandra tenuipes (New South Wales)
Doryphora aromatica (northeast Queensland)
Doryphora sassafras (Queensland and New South Wales)
Dryadodaphne crassa (New Guinea)
Dryadodaphne novoguineensis (New Guinea)
Dryadodaphne trachyphloia (Queensland)
Laurelia novae-zelandiae (New Zealand)
Laurelia sempervirens (southern Chile)
Laureliopsis philippiana (southern Chile and Argentina)
Nemuaron vieillardii (New Caledonia)

References

Floyd, Alex G. (2009). Rainforest Trees of Mainland Southeastern Australia. Lismore, NSW: Terania Rainforest Publishing. p. 83. ISBN 978-0-9589436-7-3.
Stevens, P.F. "Atherospermataceae". Angiosperm Phylogeny Website.