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"Olacaceae" s. lat.

Family Description

Distribution Map

Olacaceae Distribution Map

List of Genera in "Olacaceae" s. lat.

Photographs

Molecular phylogenetic work (Malecot & Nickrent, submitted) has documented that Olacaceae in the traditional sense is polyphyletic. The following classification gives the composition of early diverging Santalales families that we now recognize.  All cases of documented nonparasitism are present in Erythropalaceae whereas all documented parasites are in the remaining families.  

Erythropalaceae Planch ex Miquel (1856)

Subfam. Erythropaloideae Hasskal (1848)

Erythropalum

  1. Erythropalum scandens

Heisteria

  1. Heisteria acuminata
  2. Heisteria concinna
  3. Heisteria costaricensis
  4. Heisteria latifolia
  5. Heisteria longipes
  6. Heisteria macrophylla
  7. Heisteria parvifolia
  8. Heisteria scandens
  9. Heisteria spruceana

Maburea

  1. Maburea trinervis

Subfam. Strombosioideae Malécot & Nickrent (2006)

Diogoa

  1. Diogoa zenkeri

Engomegoma

  1. Engomegoma gordonii

Scorodocarpus

  1. Scorodocarpus borneensis

Strombosia

  1. Strombosia javanica
  2. Strombosia philipinensis
  3. Strombosia pustulata
  4. Strombosia nigropunctata

Strombosiopsis

  1. Strombosiopsis tetrandra

Tetrastylidium

  1. Tetrastylidium grandifolium
  2. Tetrastylidium peruvianum

Ximeniaceae Horan (1834)

Curupira

  1. Curupira tefeensis

Douradoa

  1. Douradoa consimilis

Malania

  1. Malania oleifera

Ximenia

  1. Ximenia americana
  2. Ximenia americana var. caffra
  3. Ximenia sp.

Coulaceae Tiegh. (1897)

Coula

  1. Coula edulis

Minquartia

  1. Minquartia guianensis

Ochanostachys

  1. Ochanostachys amentacea

Aptandraceae Miers (1853)

Anacolosa

  1. Anacolosa frutescens

Aptandra

  1. Aptandra caudata
  2. Aptandra tubicina
  3. Aptandra zenkeri

Cathedra

  1. Cathedra acuminata
  2. Cathedra sp.

Chaunochiton

  1. Chaunochiton kappleri
  2. Chaunochiton loranthoides

Harmandia

  1. Harmandia mekongensis

Ongokea

  1. Ongokea gore

Phanerodiscus

  1. Phanerodiscus capuronii

Octoknemaceae Soler (1908)

Octoknema

  1. Octoknema affinis

Olacaceae s. str. R. Brown (1818)

Dulacia (genus should be included in Olax)

  1. Dulacia candida

Olax

  1. Olax aphylla
  2. Olax emirnensis
  3. Olax phyllanthi
  4. Olax scandens
  5. Olax stricta
  6. Olax sp.
  7. Olax sp.

Ptychopetalum

  1. Ptychopetalum olacoides (or P. uncinatum)
  2. Ptychopetalum petiolatum


Other Taxa Thought to be Related to Olacaceae

The following genera have been placed in Olacaceae in past classifications but are here treated as distinct and unrelated (not in Santalales):

Brachynema Benth.

A number of leaf and floral morphological features are abarrent in Santalales such as the dentate leaf margin and the axil placentation. Recent morphological cladistic analyses (V. Malécot, 2002) indicate that Brachynema is part of Ericales. We are awaiting adequate material to allow a molecular assessment of its position among angiosperms.

  1. Brachynema axillare

Worchesterianthus Merrill in Philipp.

This species of the Philippines has been placed in Microdesmis (Pandaceae). See Van Steenis (1955).

  1. Worchesterianthus magallanensis (Elm.) Merrill.
View type specimen at New York Botanical Garden herbarium HERE.

  • Phylogeny

    The molecular phylogeny of Santalales (including Olacaceae) presented at the 2001 meetings in Nantes, France can be seen by clicking HERE.  These data are old and a newer concept will be posted once our paper "Phylogenetic relationships of basal Santalales, particularly Olacaceae, based on nuclear and chloroplast sequences" is published.

    References


    SIUC / College of Science / Parasitic Plant Connection / Olacaceae
    URL: http://www.parasiticplants.siu.edu/Olacaceae/index.html
    Last updated: 31-Jan-07 / dln