Grass of Parnassus Parnassia palustris, photographed by Bernd Haynold.

Belongs within: Rosidae.
Contains: Celastraceae.

The Celastrales are a primarily tropical order of plants, primarily supported by molecular data.

Characters (from the Angiosperm Phylogeny Website): Vessel elements with simple perforation plates; tension wood absent; mucilage cells; stipules present; inflorescence cymose; flowers small; calyx quincuncial; micropyle bistomal; chloroplast infA gene present.

<==Celastrales [Celastranae, Celastriflorae]
    |--Ruptiliocarpon [Lepidobotryaceae] WM09
    |    `--R. caracolito WM09
    `--+--Celastraceae WM09
       `--Parnassia [Parnassiaceae, Parnassiales] WM09
            |--P. asarifolia EBS98
            |--P. chinensis O88
            |--P. kumaonica O88
            |--P. nubicola O88
            |--P. palustris WM09
            `--P. pusilla O88

Celastrales incertae sedis:
  Siphonodon [Siphonodontaceae] T00
    |--S. australe B88
    `--S. membranaceum B88
  Lepuropetalon [Lepuropetalaceae] T00
  Stackhousiaceae T00
    |--Macgregorioideae T00
    `--Stackhousioideae T00
         |--Tripterococcus brunonis T00, GK00
         `--Stackhousia T00
              |--S. clementii KM08
              |--S. intermedia G04
              |--S. monogyna OS04
              `--S. scoparia OS04

*Type species of generic name indicated


[B88] Bouček, Z. 1988. Australasian Chalcidoidea (Hymenoptera): A biosystematic revision of genera of fourteen families, with a reclassification of species. CAB International: Wallingford (UK).

[EBS98] Elliott, K. J., L. R. Boring & W. T. Swank. 1998. Changes in vegetation structure and diversity after grass-to-forest succession in a southern Appalachian watershed. American Midland Naturalist 140: 219-232.

[G04] Gibson, N. 2004. Flora and vegetation of the Eastern Goldfields Ranges: part 6. Mt Manning Range. Journal of the Royal Society of Western Australia 87 (2): 35-47.

[GK00] Gibson, N., & G. J. Keighery. 2000. Flora and vegetation of the Byenup-Muir reserve system, south-west Western Australia. CALMScience 3 (3): 323-402.

[KM08] Keighery, G. J., & W. Muir. 2008. Vegetation and vascular flora of Faure Island, Shark Bay, Western Australia. Records of the Western Australian Museum Supplement 75: 11-19.

[OS04] Obbens, F. J., & L. W. Sage. 2004. Vegetation and flora of a diverse upland remnant of the Western Australian wheatbelt (Nature Reserve A21064). Journal of the Royal Society of Western Australia 87 (1): 19-28.

[O88] Ohba, H. 1988. The alpine flora of the Nepal Himalayas: An introductory note. In The Himalayan Plants vol. 1 (H. Ohba & S. B. Malla, eds) The University Museum, University of Tokyo, Bulletin 31: 19-46.

[T00] Thorne, R. F. 2000. The classification and geography of the flowering plants: Dicotyledons of the class Angiospermae (subclasses Magnoliidae, Ranunculidae, Caryophyllidae, Dilleniidae, Rosidae, Asteridae, and Lamiidae). The Botanical Review 66: 441-647.

[WM09] Wang, H., M. J. Moore, P. S. Soltis, C. D. Bell, S. F. Brockington, R. Alexandre, C. C. Davis, M. Latvis, S. R. Manchester & D. E. Soltis. 2009. Rosid radiation and the rapid rise of angiosperm-dominated forests. Proceedings of the National Academy of Sciences of the USA 106 (10): 3853-3858.

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