Belongs within: Monandrae.
Contains: Caladenia, Diseae, Cranichideae, Thelymitra, Acianthinae, Pterostylis, Prasophyllinae, Diuridinae.
The Orchidoideae are a clade of terrestrial orchids united by spiral phyllotaxy, together with the presence of polygonal epidermal cells, and intercellular spaces in the testa (Freudenstein & Rasmussen 1999, as Orchidoideae + Spiranthoideae). Members include the Australasian genus Chiloglottis, bearing two basal, more or less oblong leaves and flowers with a more or less clawed, undivided labellum (Moore & Edgar 1970).
<==Orchidoideae [Caladeniae, Caladeniinae, Chloraeinae, Diurideae]
|--+--DiseaeRG07
| `--Codonorchis [Codonorchideae]RG07
| `--C. lessoniiD03
`--+--+--ChloraeaRG07
| `--+--+--Megastylis Schlechter 1911RG07, H49b
| | `--CranichideaeRG07
| `--+--+--ThelymitraFR99
| | `--AcianthinaeFR99
| `--Pterostylidinae [Pterostylideae]A86
| |--PterostylisRG07
| `--Caleana Br. 1810ME70
| `--C. minor Br. 1810ME70 [=Paracaleana minor (Brown) Blaxell 1972HE80]
`--+--+--PrasophyllinaeRG07
| `--EriochilusRG07
| |--E. autumnalisH86
| |--E. dilatatusOS04
| | |--E. d. ssp. dilatatusOS04
| | `--E. d. ssp. multiflorusOS04
| `--E. scaberGK00
`--+--DiuridinaeRG07
`--Chiloglottis Br. 1810RG07, ME70
|--C. anaticeps Jones 1991J91
|--C. chlorantha Jones 1991J91
|--C. cornuta Hooker 1844H49a (see below for synonymy)
|--C. diphyllaJ91
|--C. formicifera Fitzgerald 1885H49a
|--C. gunniiM89
|--C. longiclavata Jones 1991J91
|--C. palachila Jones & Clements in Jones 1991J91
|--C. platyptera Jones 1991J91
|--C. pluricallata Jones 1991J91
|--C. reflexaJ91
|--C. seminuda Jones 1991J91
|--C. sphyrnoides Jones 1991J91
|--C. sylvestrisJ91
|--C. trapeziformisH86
|--C. trilabraJ91
|--C. trullata Jones 1991J91
|--C. truncataJ91
|--C. turfosa Jones 1991J91
`--C. valida Jones 1991J91
Orchidoideae incertae sedis:
Lyperanthus Br. 1810ME70
|--L. antarcticus Hooker 1847H49b
|--L. forrestiiH49b
|--L. nigricans Brown 1810H49b
|--L. serratusH49b
`--L. suaveolens Brown 1810H49b [=Caladenia suaveolensH86]
Petalochilus Rogers 1924 (n. d.)H49c, ME70
|--P. calyciformis Rogers 1924 (n. d.)H49c
`--P. saccatus Rogers 1924 (n. d.)H49c
BipinnulaA86
GavileaA86
Geoblasta penicillataLY21
CaladeniaFR99
Adenochilus Hook. f. 1853ME70
|--A. gracilis Hook. f. 1853ME70
`--A. nortoniC06
Aporostylis Rupp & Hatch 1946ME70
`--*A. bifolia (Hooker) Rupp & Hatch 1945 (see below for synonymy)H49a
ArthrochilusA86
|--A. byrnesiiLK14
|--A. irritabilisJ91
|--A. latipes Jones 1991J91
|--A. oreophilus Jones 1991J91
|--A. prolixus Jones 1991J91
|--A. rosulatus Jones 1991J91
|--A. sabulosus Jones 1991J91
`--A. stenophyllus Jones 1991J91
DrakaeaA86
|--D. glyptodonGK00
`--D. lividaGK00
ElythrantheraA86
|--E. brunonisOS04
`--E. emarginataGK00
Glossodia majorA86, C08
Leporella fimbriataA86, OS04
Paracaleana nigritaA86, GK00
Rimacola Rupp 1942A86, H49b
`--*R. ellipticus [=Lyperanthus ellipticus Brown 1810]H49b
SpiculaeaA86
CyrtostylisC06
|--C. huegeliiGK00
`--C. robustaGK00
Nomen nudum: Eriochilus dilatatus ssp. undulatus Gibson & Keighery 2000GK00
*Aporostylis bifolia (Hooker) Rupp & Hatch 1945 [=Caladenia bifolia Hooker 1853, Chiloglottis bifolia (Hooker) Schlechter 1911; incl. Ca. macrophylla Col. 1895, Ch. traversii von Mueller 1864]H49a
Chiloglottis cornuta Hooker 1844H49a [=Caladenia cornuta (Hooker) Reichb. 1871ME70; incl. Ch. muelleri Fitzgerald 1855H49a]
*Type species of generic name indicated
References
[A86] Atwood, J. T. 1986. The size of the Orchidaceae and the systematic distribution of epiphytic orchids. Selbyana 9: 171–186.
[C08] Cambage, R. H. 1908. Notes on the native flora of New South Wales. Part VI. Deepwater to Torrington and Emmaville. Proceedings of the Linnean Society of New South Wales 33 (1): 45–65, pls 1–2.
[C06] Cheeseman, T. F. 1906. Manual of the New Zealand Flora. John Mackay, Government Printer: Wellington.
[D03] Dusén, P. 1903. The vegetation of western Patagonia. In: Scott, W. B. (ed.) Reports of the Princeton University Expeditions to Patagonia, 1896–1899 vol. 8. Botany pp. 1–34. The University: Princeton (New Jersey).
[FR99] Freudenstein, J. V., & F. N. Rasmussen. 1999. What does morphology tell us about orchid relationships?—a cladistic analysis. American Journal of Botany 86: 225–248.
[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.
[H86] Hamilton, A. G. 1886. List of the Orchideae of the Mudgee district. Proceedings of the Linnean Society of New South Wales, series 2, 1 (3): 865–878.
[H49a] Hatch, E. D. 1949a. Aporostylis R. and Hh., Townsonia Cheesmn., and the New Zealand forms of Chiloglottis R. Br. Transactions and Proceedings of the Royal Society of New Zealand 77 (2): 226–229.
[H49b] Hatch, E. D. 1949b. Lyperanthus antarcticus Hook. f. and the New Zealand forms of Gastrodia R. Br. Transactions and Proceedings of the Royal Society of New Zealand 77 (2): 230–233.
[H49c] Hatch, E. D. 1949c. Petalochilus Rog. and the New Zealand forms of Caladenia R. Br. Transactions and Proceedings of the Royal Society of New Zealand 77 (3): 398–402.
[HE80] Healy, A. J., & E. Edgar. 1980. Flora of New Zealand vol. 3. Adventive cyperaceous, petalous and spathaceous monocotyledons. P. D. Hasselberg, Government Printer: Wellington (New Zealand).
[J91] Jones, D. L. 1991. New taxa of Australian Orchidaceae. Australian Orchid Research 2: 1–208.
[LY21] Liu, Z., S.-J. Yang, Y.-Y. Wang, Y.-Q. Peng, H.-Y. Chen & S.-X. Luo. 2021. Tackling the taxonomic challenges in the family Scoliidae (Insecta, Hymenoptera) using an integrative approach: a case study from southern China. Insects 12: 892.
[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.
[M89] Maiden, J. H. 1889. Notes on the geographical distribution of some New South Wales plants, compiled from information supplied by W. Bauerlen, and from some diagnoses by Baron von Mueller, K.C.M.G., F.R.S., &c. Proceedings of the Linnean Society of New South Wales, series 2, 4 (1): 107–112.
[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).
[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.
[RG07] Ramírez, S. R., B. Gravendeel, R. B. Singer, C. R. Marshall & N. E. Pierce. 2007. Dating the origin of the Orchidaceae from a fossil orchid with its pollinator. Nature 448: 1042–1045.