PBDB Taxon

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Olacaceae

Angiospermae - Santalales - Olacaceae

Taxonomy

Olacaceae was named by Martinov (1818).

It was assigned to Dicotyledones by Chandler (1961); and to Santalales by Mabberley (2000) and The Angiosperm Phylogeny Group (2016).

Subtaxa

Erythropalum, Olax, Strombosia, Trioculata, Ximenioxylon

Synonyms

Ximenioxylon was named by Trivedi and Srivastava (1979). It is not extant.

It was considered a nomen nudum by Srivastava (1991).
Ximenioxylon mahurzari was named by Yawale et al. (1983). It is not extant. Its type locality is Mahurzari, which is in a Paleogene lagoonal/restricted shallow subtidal horizon in the Deccan Intertrappean Formation of India.

It was considered a nomen nudum by Srivastava (1991).
Ximenioxylon mohgaoense was named by Trivedi and Srivastava (1979). It is not extant. Its type locality is Mohgaon Kalan, which is in a Paleogene lagoonal/restricted shallow subtidal horizon in the Deccan Intertrappean Formation of India.

It was considered a nomen nudum by Srivastava (1991).
Aptandraceae was named by Miers.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).
Coulaceae was named by Tiegh.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).
Erythropalaceae was named by Planch ex Miq.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).
Octoknemaceae was named by Soler.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).
Strombosiaceae was named by Tiegh.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).
Ximeniaceae was named by Horan.

It was synonymized subjectively with Olacaceae by The Angiosperm Phylogeny Group (2016).

Synonymy list

Year	Name and author
1818	Olacaceae Martinov
1961	Olacaceae Chandler p. 144
1979	Ximenioxylon Trivedi and Srivastava
1979	Ximenioxylon mohgaoense Trivedi and Srivastava
1983	Ximenioxylon mahurzari Yawale et al.
2000	Olacaceae Mabberley
2016	Olacaceae The Angiosperm Phylogeny Group pp. 7, 18

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Rank	Name	Author
kingdom	Plantae
phylum	Spermatophyta
class	Angiospermae
—	Mesangiosperms
—	Eudicots	Doyle and Hotton 1991

Rank	Name	Author
—	Coreeudicots	The Angiosperm Phylogeny Group 2009
—	Superasterids
order	Santalales	Brown 1820
family	Olacaceae	Martinov 1818
family	Olacaceae	Martinov 1818

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Fm. †Olacaceae Martinov 1818

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G. Erythropalum Blume

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†Erythropalum europaeum Reid and Chandler 1933

†Erythropalum jenkinsi Chandler 1961

†Erythropalum turbinatum Chandler 1961

G. Olax Linnaeus 1753

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†Olax bankasii Prasad and Pandey 2008

Olax zeylanica Linnaeus 1753

G. Strombosia Blume

G. †Trioculata Thiergart and Frantz 1963

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†Trioculata riedeli Thiergart and Frantz 1963

Invalid names: Aptandraceae Miers [synonym], Coulaceae Tiegh [synonym], Erythropalaceae Planch ex Miq [synonym], Octoknemaceae Soler [synonym], Strombosiaceae Tiegh [synonym], Ximeniaceae Horan [synonym], Ximenioxylon Trivedi and Srivastava 1979 [nomen nudum]

Diagnosis

Reference	Diagnosis
The Angiosperm Phylogeny Group 2016	Malecot & Nickrent (2008; as summarized in Nickrent et al., 2010) split ‘Olacaceae’ into eight families: Aptandraceae, Coulaceae, Erythropalaceae, Octoknemaceae, Olacaceae s.s., Schoepfiaceae, Strombosiaceae and Ximeniaceae. Additionally, Der & Nickrent (2008; as summarized in Nickrent et al., 2010) proposed recognition of seven families in the group recognized as Santalaceae in APG III (2009): Amphorogynaceae, Cervantesiaceae, Comandraceae, Nanodeaceae, Santalaceae s.s., Thesiaceae and Viscaceae. However, strong support for these relationships is lacking, particularly in ‘Olacaceae’. We therefore here opt to maintain the APG III (2009) status quo in Santalales until additional data can be brought to bear on this problematic clade.