Belongs within: Petrosaviidae.
The Pandanales are a clade of mostly tropical and subtropical monocotyledons that are united by molecular analyses, but have few identified morphological synapomorphies. The Angiosperm Phylogeny Website lists two shared characters within the clade: the presence of a nucellar cap, and a minute embryo.
The type family, Pandanaceae, contains Old World tropical and subtropical trees and shrubs with linear to lanceolate leaves; they may be scandent, and they often bear aerial roots (Moore & Edgar 1970). Leaves of Pandanus species (pandan) are used for weaving, and those of P. amaryllifolius are also used for flavouring and colouring food. The Cyclanthaceae are a Neotropical family of palm-like herbs, shrubs and climbing vines. Leaves of Carludovica palmata are the material used for making Panama hats.
The Stemonaceae are a group of often crawling or climbing herbs found in southeast Asia and northern Australia with a single species in North America; their flowers are unusual for monocots in being tetramerous. The Triuridaceae are mycoheterotrophs lacking xylem vessels or stomata. The Velloziaceae of South America and Africa are herbs or shrubby perennials with woody-fibrous stems covered by persistent leaf bases.
<==Pandanales [Pandananae]
|--+--Acanthochlamys [Acanthoclamydaceae]DS04
| | `--A. bracteataDS04
| `--Velloziaceae [Velloziales]DS04
| |--BarbaceniopsisDS04
| |--Talbotia elegans [=Barbacenia elegans]DS04
| `--Vellozia squamataRJ11
`--+--Triuridaceae [Triuridales, Triuridanae]DS04
| | i. s.: SeychellariaYY22
| | AndrurisYY22
| |--Sciaphila [Sciaphileae]DS04
| | `--S. albescensDS04
| `--TriurideaeDS04
| |--TriurisDS04
| `--Lacandonia schismaticaDS04
`--+--StemonaceaeDS04
| |--Croomia paucifloraDS04
| |--SpirelleaCBH93
| `--StemonaDS04
| |--S. australianaLK14
| |--S. japonicaDS04
| |--S. javanicaDS04
| |--S. tuberosaBB07
| `--S. vagula Smith 1917 [incl. Disporum mairei Léveillé 1917, S. mairei (Léveillé) Krause 1928]H88
`--+--Cyclanthaceae [Cyclanthales, Cyclantheae]DS04
| | i. s.: EvodianthusYY22
| | LudoviaYY22
| | SaracinanthusYY22
| | StelestylisYY22
| | Cyclanthodendron [incl. Heliconiates, Musocaulon, Tricoccites]CBH93
| | `--C. sahnii (Rode) Sahni & Surange 1944CBH93
| | Discanthus Spruce 1860S60
| | `--*D. odoratus Spruce 1860S60
| |--Cyclanthus bipartitusDS04
| `--+--CarludovicaDS04
| | |--C. atrovirensC38
| | `--C. palmataDS04
| `--+--Chorigyne cylindricaDS04
| `--SphaeradeniaDS04
| |--S. pendulaDS04
| `--S. stenospermaDS04
`--Pandanaceae [Pandaneae]DS04
|--SararangaYY22
|--Pandanocarpum oolithicum (Carruthers) Zigno 1873CBH93
|--Podocarya bucklandi Goeppert in Bronn 1848CBH93
|--Freycinetia Gaud. 1824ME70
| |--F. angustifoliaRC02
| |--F. arboreaKIW98
| |--F. banksii Cunn. 1837ME70
| |--F. excelsaB78
| |--F. gaudichaudiiB78
| |--F. multifloraDS04
| |--F. scandensDS04
| `--F. takeuchiiH03
`--PandanusSS10
| i. s.: P. amaryllifoliusP88
| P. amboinensisH03
| P. atrocarpusRC02
| P. christmatensis Martelli 1905 [incl. P. nativitatis]JG19
| P. copelandiiDS04
| P. corneriH03
| P. darwinensisLK14
| P. dubiusP88
| P. elatus Ridley 1906JG19
| P. helicopusP88
| P. houlletianaRC02
| P. inermisRC02
| P. laevisRC02
| P. leuconatusK03
| P. ovatusRC02
| P. parvusRC02
| P. rheophilusLK14
| P. semiarmatusLK14
| P. tectorius Solander ex Warburger 1900CBH93, SY72
| |--P. t. var. tectoriusB88
| `--P. t. var. neo-caledonicusB88
| P. upoluensisB88
| P. veitchiiDS04
|--P. sect. Acrostigma [incl. Fisquetia]B78
| `--P. monticolaB78
`--P. sect. KeuraB78
|--P. aquaticusB78
|--P. forsteriB78
|--P. odoratissimum Linn. f. 1781B78, SY72 (see below for synonymy)
`--P. pedunculatusB78
Nomen nudum: Pandanus feruliferus St. John in St. John & Philipson 1960SJP60
Pandanus odoratissimum Linn. f. 1781B78, SY72 [incl. P. fascicularis Lamk. 1783SY72, P. spiralisB78, P. verus (pre-Linnean)B78]
*Type species of generic name indicated
References
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[B78] Bentham, G. 1878. Flora Australiensis: A description of the plants of the Australian Territory vol. 7. Roxburghiaceae to Filices. L. Reeve & Co.: London.
[B88] Bouček, Z. 1988. Australasian Chalcidoidea (Hymenoptera): A biosystematic revision of genera of fourteen families, with a reclassification of species. CAB International: Wallingford (UK).
[CBH93] Collinson, M. E., M. C. Boulter & P. L. Holmes. 1993. Magnoliophyta (‘Angiospermae’). In: Benton, M. J. (ed.) The Fossil Record 2 pp. 809–841. Chapman & Hall: London.
[C38] Crawford, J. C. 1938. A new genus and species of Thysanoptera from greenhouses. Proceedings of the Entomological Society of Washington 40 (4): 109–111.
[DS04] Davis, J. I., D. W. Stevenson, G. Petersen, O. Seberg, L. M. Campbell, J. V. Freudenstein, D. H. Goldman, C. R. Hardy, F. A. Michelangeli, M. P. Simmons, C. D. Specht, F. Vergara-Silva & M. Gandolfo. 2004. A phylogeny of the monocots, as inferred from rbcL and atpA sequence variation, and a comparison of methods for calculating jackknife and bootstrap values. Systematic Botany 29 (3): 467–510.
[H88] Hara, H. 1988. A revision of the Asiatic species of the genus Disporum (Liliaceae). In: Ohba, H., & S. B. Malla (eds) The Himalayan Plants vol. 1. The University Museum, University of Tokyo, Bulletin 31: 163–209.
[H03] Heads, M. 2003. Ericaceae in Malesia: vicariance biogeography, terrane tectonics and ecology. Telopea 10 (1): 311–449.
[JG19] James, D. J., P. T. Green, W. F. Humphreys & J. C. Z. Woinarski. 2019. Endemic species of Christmas Island, Indian Ocean. Records of the Western Australian Museum 34 (2): 55–114.
[KIW98] Kearns, C. A., D. W. Inouye & N. M. Waser. 1998. Endangered mutualisms: the conservation of plant-pollinator interactions. Annual Review of Ecology and Systematics 29: 83–112.
[K03] Kulip, J. 2003. An ethnobotanical survey of medicinal and other useful plants of Muruts in Sabah, Malaysia. Telopea 10 (1): 81–98.
[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.
[ME70] Moore, L. B., & E. Edgar. 1970. Flora of New Zealand vol. 2. Indigenous Tracheophyta: Monocotyledones except Gramineae. A. R. Shearer, Government Printer: Wellington (New Zealand).
[P88] Polunin, I. 1988. Plants and Flowers of Malaysia. Times Editions: Singapore.
[RC02] Ridley, H. N., & C. Curtis. 1902. Malay plant names. Journal of the Straits Branch of the Royal Asiatic Society 38: 39–122.
[RJ11] Rising, J. D., A. Jaramillo, J. L. Copete, P. G. Ryan & S. C. Madge. 2011. Family Emberizidae (buntings and New World sparrows). In: Hoyo, J. del, A. Elliott & D. A. Christie (eds) Handbook of the Birds of the World vol. 16. Tanagers to New World Blackbirds pp. 428–683. Lynx Edicions: Barcelona.
[SY72] Shah, G. L., & D. V. Yogi. 1972. Nomenclatural changes in some Bombay plants—IV. Journal of the Bombay Natural History Society 69 (2): 444–449.
[W60] Spruce, R. 1860. On five new plants from eastern Peru. Journal of the Proceedings of the Linnean Society of London: Botany 4: 191–204.
[SJP60] St. John, H. & W. R. Philipson. 1960. List of the flora of Oeno Atoll, Tuamotu Archipelago, south-central Pacific Ocean. Transactions of the Royal Society of New Zealand 88 (3): 401–403.
[SS10] Stanisic, J., M. Shea, D. Potter & O. Griffiths. 2010. Australian Land Snails vol. 1. A. field guide to eastern Australian species. Bioculture Press: Mauritius.
[YY22] Yampolsky, C., & H. Yampolsky. 1922. Distribution of sex forms in the phanerogamic flora. Bibliotheca Genetica 3: 1–62.