Polystachya Hook.

This genus is accepted, and its native range is Tropics & Subtropics.

[FZ]

Orchidaceae, I. la Croix & P.J. Cribb. Flora Zambesiaca 11:2. 1998

Morphology General Habit
Epiphytic, occasionally lithophytic or terrestrial perennial herbs.
Morphology Stem
Stems usually forming pseudobulbs, clustered or less commonly spaced out on a creeping rhizome, sometimes branched or superposed (emerging from nodes above the base of the previous pseudobulb), 1- to several-noded, with 1 to several leaves.
Morphology Leaves
Leaves linear, lanceolate, oblanceolate or elliptic, varying in texture.
Morphology Reproductive morphology Inflorescences
Inflorescence (comprising peduncle, rhachis and flowers) 1- to many-flowered, simple or branching. Floral bracts erect to reflexed, setiform, lanceolate, ovate or obovate, acute or acuminate to mucronate.
Morphology Reproductive morphology Flowers
Flowers usually non-resupinate, very small or medium-sized, rarely large, usually fragrant, often pubescent, green, yellow, white, pink, mauve or orange, rarely red.
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal lanceolate to ovate; lateral sepals ± oblique, joined to the column-foot to form a mentum.
Morphology Reproductive morphology Flowers Corolla
Petals linear to obovate.
Morphology Reproductive morphology Flowers Labellum
Lip usually 3-lobed but sometimes entire, with or without a basal callus, glabrous, pubescent or farinose, often recurved, sometimes fleshy and difficult to flatten without breaking.
Morphology Reproductive morphology Flowers Column
Column porrect, usually short and stout with a ± elongate foot; pollinia 2, ovoid; stipe 1, square or sub-triangular to oblong or linear; viscidium small to large, round or ellipsoid; rostellum usually obscure, bifid in front, rarely slightly elongated or beak-like.

[FTEA]

Orchidaceae, V. S. Summerhayes. Flora of Tropical East Africa. 1968

Morphology General Habit
Small, medium-sized or rarely large epiphytic or less commonly lithophytic or terrestrial herbs
Morphology Stem
Stems often pseudobulbous, caespitose or less commonly spaced on a creeping rhizome, sometimes branched or superposed, 1–several-noded, 1–several-leaved
Morphology Leaves
Leaves suberect to spreading, thin-textured, coriaceous or rarely fleshy, often distichous, linear or lanceolate to oblong-elliptic or oblanceolate, emarginate, acute, obtuse or acuminate at the apex
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, erect to pendulous, 1–many-flowered, simple or branching; branches sometimes secund; bracts suberect to reflexed, setose or lanceolate to ovate or obovate, acute or acuminate to mucronate
Morphology Reproductive morphology Flowers
Flowers minute to fairly large, mostly with lip uppermost, non-resupinate, mostly rather drably coloured, ± fragrant, often pubescent
Morphology Reproductive morphology Flowers Calyx
Dorsal sepal mostly porrect, lanceolate to ovate-elliptic; lateral sepals ± oblique, attached to the column-foot to form a more or less prominent mentum
Morphology Reproductive morphology Flowers Corolla
Petals linear to obovate
Morphology Reproductive morphology Flowers Labellum
Lip entire to 3-lobed, with or without a basal callus, glabrous, pubescent or farinose, often recurved and difficult to flatten
Morphology Reproductive morphology Flowers Column
Column porrect, mostly short and stout, with a ± elongate foot; pollinia 2, ovoid; stipe 1, square or subtriangular to oblong or linear; viscidium small to large, circular or elliptic; rostellum mostly obscure, bifid in front, rarely slightly elongate and beak-like.

[FTEA]

Orchidaceae, V. S. Summerhayes. Flora of Tropical East Africa. 1968

Morphology General Habit
Terrestrial or lithophytic herb with clustered leafy stems
Morphology Leaves
Leaves grass-like, articulated below to a sheathing base
Morphology Reproductive morphology Flowers
Flowers numerous in dense terminal racemes, showy, with a strong sweet scent
Morphology Reproductive morphology Flowers Calyx
Sepals subequal, ± spreading, the laterals slightly united at the base and slightly adnate to the base of the lip
Morphology Reproductive morphology Flowers Corolla
Petals free, similar to the sepals
Morphology Reproductive morphology Flowers Labellum
Lip somewhat spreading, sessile at the base of the column and ± adnate and parallel to it, entire, fleshy, devoid of keel or crests, but the basal and central part distinctly to slightly hairy
Morphology Reproductive morphology Flowers Column
Column short and thick, rounded at the back, excavated in front, with sparse short bristles on the angular edges; column-foot obscure, forming an obscure mentum with the lateral sepals; anther galeate, subhemispherical, obtusely umbonate at the apex, the basal margins retuse; pollinia attached to a semicircular viscidium, in 2 pairs of 2, each consisting of a smaller discoid one fitting against a larger concavo-convex one, separated by thin folds of tissue when young which later roll up forming ridges inside the anther- cap.

Native to:

Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Bahamas, Belize, Benin, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Cayman Is., Central African Repu, Chad, China South-Central, Colombia, Comoros, Congo, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Equatorial Guinea, Eritrea, Ethiopia, Florida, French Guiana, Gabon, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Haiti, Honduras, India, Ivory Coast, Jamaica, Jawa, Kenya, KwaZulu-Natal, Laos, Leeward Is., Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Maluku, Mauritius, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Mozambique, Netherlands Antilles, Nicaragua, Nicobar Is., Nigeria, Northern Provinces, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Rwanda, Réunion, Senegal, Seychelles, Sierra Leone, Sri Lanka, Sudan, Sulawesi, Sumatera, Suriname, Swaziland, Tanzania, Thailand, Togo, Trinidad-Tobago, Uganda, Venezuela, Venezuelan Antilles, Vietnam, Windward Is., Zambia, Zaïre, Zimbabwe

Introduced into:

Hawaii

Polystachya Hook. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
May 17, 2010 Harris, T. [657], Mozambique K000718178 No
Aug 10, 2006 74465.000 No
May 1, 1994 Cable, S. [78], Cameroon K000107000 No
Jan 1, 1988 Thomas, D.W. [7005], Cameroon K000106731 No
Oct 1, 1972 Bauer, P.J. [81], Cameroon K000106653 No
Williamson, G. [13a], Zambia 11887.017 No
Williamson, G. [203], Zambia 17326.006 No
Williamson, G. [131], Zambia 17326.007 No
Callens, H. [1168] 17897.000 No
Williamson, G. [321], Zambia 1800.032 No
Tanzania 21272.000 No
21273.000 No
21274.000 No
24672.000 No
26122.000 No
Williamson, G. [311], Zambia 27461.004 No
Zambia 27461.054 No
Eggeling, W.J. [5993], Uganda 29417.000 No
Drummond [2615A], Tanzania 29637.000 No
Mason, L.M. [1014], Madagascar 29770.000 No
Moreau, R.E. [167], Tanzania 30261.000 No
Moreau, R.E. [872], Tanzania 30425.000 No
Wild, H. [GH.35738], Zimbabwe 30942.000 No
Zimbabwe 31039.000 No
Moreau [126], Tanzania 31179.000 No
Zimbabwe 31180.000 No
Leach, L.C. [10958] 31204.000 No
Moreau, R.E. [321], Tanzania 31247.000 No
Zimbabwe 31415.000 No
Morze, G. [91], Zambia 31733.000 No
Morze, G., Zambia 31736.000 No
Morze, G. [125], Zambia 31737.000 No
Morze, G. [103A], Zambia 31742.000 No
Morze, G. [104a], Zambia 31745.000 No
Morze, G. [102], Zambia 31746.000 No
Morze, G. [168], Zambia 31755.000 No
Morze, G. [121], Zambia 31758.000 No
Morze, G. [71], Zambia 31761.000 No
Morze, G. [167], Zambia 31762.000 No
Morze, G. [127c], Zambia 31770.000 No
Morze, G. [127a], Zambia 31771.000 No
Morze, G. [127b], Zambia 31783.000 No
Morze, G. [130], Zambia 31794.000 No
31802.000 No
Williamson, G. [421], Zambia 32589.000 No
Williamson, G. [1243], Zambia 32611.000 No
Moreau [604], Tanzania 32835.000 No
Moreau [849] 32845.000 No
Williamson, G. [1514], Zambia 32881.000 No
Williamson, G. [2], Zambia 33179.000 No
Williamson, G. [321], Zambia 33723.000 No
Williamson, G. [778], Zambia 33877.000 No
Williamson, G. [776], Zambia 33881.000 No
Williamson, G. [144], Malawi 33985.000 No
Williamson, G. [125], Zambia 34004.000 No
Zambia 34010.000 No
Bowden, J.K. [91], Nigeria 34930.000 No
Richards, H.M. [26708], Tanzania 37429.000 No
Williamson, G. [778], Zambia 39724.000 No
Taylor, P. [16383], Ecuador 41640.000 No
Schaijes, M. [2255], Congo, DRC 48942.000 No
Du Puy, B. [MB701], Madagascar 56377.000 No
la Croix, I. [1154], Congo 57107.000 No
Du Puy, B. [MB153], Madagascar 57503.000 No
Congo, DRC 58669.000 No
Madagascar 59391.000 No
Nigeria 6048.000 No
6049.000 No
Madagascar 61042.000 No
Zimbabwe 6148.000 No
6150.000 No
la Croix, I. [1145], Congo 61631.000 No
la Croix, I. [1145], Congo 61634.000 No
Spurrier, M. [1065], Tanzania 61642.000 No
la Croix, I [1149], Congo 61655.000 No
Zapfack, L. [727], Cameroon 61664.000 No
Cheek, M. [7877], Cameroon 61666.000 No
Cable, S. [2634], Cameroon 61670.000 No
Cheek, M. [5481], Cameroon 61672.000 No
Zapfack, L. [963], Cameroon 61673.000 No
Cable, S. [3862], Cameroon 61690.000 No
Mackinder, B.A. [185], Cameroon 61702.000 No
Cable, S. [2778], Cameroon 61705.000 No
Cable, S. [2422], Cameroon 61716.000 No
Cable, S. [2421], Cameroon 61734.000 No
Cheek, M. [9527], Cameroon 61737.000 No
Cheek, M. [8340], Cameroon 61933.000 No
Cheek, M. [8343], Cameroon 61934.000 No
Madagascar 63492.000 No
Cable, S. [3544], Cameroon 63776.000 No
Ryan, P. [288], Cameroon 63783.000 No
Ryan, P. [376], Cameroon 63797.000 No
Etuge, M. [2006], Cameroon 63801.000 No
Ryan, P. [272], Cameroon 63829.000 No
Cable, S. [2423], Cameroon 63843.000 No
Ryan, P. [258], Cameroon 63845.000 No
Harley, W.J. [1773a], Liberia 9216.000 No
9217.000 No
South Africa 9218.000 No
9220.000 No
9221.000 No
Drummond, R.B. [1668], Tanzania 9222.000 No
Callens, H. [815] 9223.000 No
la Croix, I. [1123], Congo 71546.000 No
la Croix, I. [1204], Tanzania 71547.000 No
Biteau, P. [F iv], Gabon 71594.000 No
Biteau, P. [R vi], Gabon 71595.000 No
Biteau, P. [F ii], Gabon 71596.000 No
Biteau, P. [I i], Gabon 71598.000 No
Biteau, P. [T iv], Gabon 71602.000 No
Biteau, P. [Q viii], Gabon 71603.000 No
Biteau, P. [Z ii], Gabon 71604.000 No
Biteau, P. [F iii], Gabon 71605.000 No
Biteau, P. [G i], Gabon 71606.000 No
Biteau, P. [A ii], Gabon 71611.000 No
Du Puy, B. [MB689], Madagascar 72249.000 No
Du Puy, B. [MB688], Madagascar 72252.000 No
Hermans, J. [13/16], Madagascar 72440.000 No
Madagascar 72720.000 No
Salazar Chavez, G.A. [6321] 74321.000 No
Holmes, W.D. [355, 356, 361, 363 or 367], Zambia 75889.000 No
Holmes, W.D. [355, 356, 361, 363 or 367], Zambia 75898.000 No
Holmes, W.D. [355, 356, 361' 363 or 367], Zambia 75901.000 No
de Wilde, J. J. F. E., de Wilde, [536], Gabon 75930.000 No
Brinklow, R.K. [33], Cameroon 77348.000 No
Zapfack, L. [887], Cameroon 76153.000 No
Pollard, B.J. [1051], Cameroon 65005.000 No
Holmes, W.D. [355, 356, 361, 363 or 367], Zambia 75903.000 No
Alkema [518] 75899.000 No
Holmes, W.D. [355, 356, 361, 363 or 367], Zambia 75897.000 No
Holmes, W.D. [355, 356, 361, 363 or 367], Zambia 75887.000 No
Holmes [8], Zambia 77399.000 No

First published in Exot. Fl. 2: t. 103 (1824)

Accepted by

  • Chase, M.W., Cameron, K.M., Freudenstein, J.V., Pridgeon, A.M., Salazar, G., van den Berg, C. & Schuiteman, A. (2015). An updated classification of Orchidaceae Botanical Journal of the Linnean Society 117: 151-174.
  • Govaerts, R. (2003). World Checklist of Monocotyledons Database in ACCESS: 1-71827. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Mytnik-Ejsmont, J. & Baranow, P. (2010). Taxonomic study of Polystachya Hook. (Orchidaceae) from Asia Plant Systematics and Evolution 290: 57-63.
  • Mytnik-Ejsmont, J. (2011). A monograph of the subtribe Polystachyinae Schltr. (Orchidaceae): 1-400. Fundacja Rozwoju Uniwersytetu Gdanskiego.
  • Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2014). Genera Orchidacearum 6: 1-544. Oxford University Press, New York, Oxford.

Literature

Flora of West Tropical Africa

  • Exot. Fl. 2: t. 103 (1824)
  • F.T.A. 7: 103 Nom. cons.

Flora Zambesiaca

  • Exot. Fl. 2: t. 103 (1824), nom. conserv.

Flora of Tropical East Africa

  • Exot. Fl. 2, t. 103 (1824), nom. conserv.

  • Flora Zambesiaca

    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of Tropical East Africa

    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0