, Volume 92, Issue 6, pp 255–264 | Cite as

On the success of a swindle: pollination by deception in orchids



A standing enigma in pollination ecology is the evolution of pollinator attraction without offering reward in about one third of all orchid species. Here I review concepts of pollination by deception, and in particular recent findings in the pollination syndromes of food deception and sexual deception in orchids. Deceptive orchids mimic floral signals of rewarding plants (food deception) or mating signals of receptive females (sexual deception) to attract pollen vectors. In some food deceptive orchids, similarities in the spectral reflectance visible to the pollinator in a model plant and its mimic, and increased reproductive success of the mimic in the presence of the model have been demonstrated. Other species do not mimic specific model plants but attract pollinators with general attractive floral signals. In sexually deceptive orchids, floral odor is the key trait for pollinator attraction, and behaviorally active compounds in the orchids are identical to the sex pheromone of the pollinator species. Deceptive orchids often show high variability in floral signals, which may be maintained by negative frequency-dependent selection, since pollinators can learn and subsequently avoid common deceptive morphs more quickly than rare ones. The evolution of obligate deception in orchids seems paradoxical in the light of the typically lower fruit set than in rewarding species. Pollination by deception, however, can reduce self-pollination and encourage pollen flow over longer distances, thus promoting outbreeding. Although some food deceptive orchids are isolated through postzygotic reproductive barriers, sexually deceptive orchids lack post-mating barriers and species isolation is achieved via specific pollinator attraction. Recent population genetic and phylogenetic investigations suggest gene-flow within subgeneric clades, but pollinator-mediated selection may maintain species-specific floral traits.


  1. Ackerman JD (1981) Pollination biology of Calypso bulbosa var. occidentalis (Orchidaceae): a food-deception system. Madrono 28(3):101–110Google Scholar
  2. Ackerman JD (1986) Mechanisms and evolution of food-deceptive pollination systems in orchids. Lindleyana 1:108–113Google Scholar
  3. Ackerman JD, Melendez-Ackerman EJ, Salguero-Faria J (1997) Variation in pollinator abundance and selection of fragrance phenotypes in an epiphytic orchid. Am J Bot 10:1383–1390Google Scholar
  4. Ågren L, Kullenberg B, Sensenbaugh T (1984) Congruences in pilosity between three species of Ophrys (Orchidaceae) and their hymenopterean pollinators. Nova Acta Reg Soc Sci Ups Ser V:15–25Google Scholar
  5. Aragon S, Ackerman JD (2004) Does flower color variation matter in deception pollinated Psychilis monensis (Orchidaceae). Oecologia 138:405–413CrossRefPubMedGoogle Scholar
  6. Ayasse M, Schiestl FP, Paulus HF, Löfstedt C, Hansson BS, Ibarra F, Francke W (2000) Evolution of reproductive strategies in the sexually deceptive orchid Ophrys sphegodes: How does flower-specific variation of odor signals influence reproductive success? Evolution 54(6):1995–2006PubMedGoogle Scholar
  7. Ayasse M, Schiestl FP, Paulus HF, Ibarra F, Francke W (2003) Pollinator attraction in a sexually deceptive orchid by means of unconventional chemicals. Proc R Soc Lond B 270:517–522CrossRefGoogle Scholar
  8. Barkman TJ, Beaman JH, Gage DA (1997) Floral fragrance variation in Cypripedium: implications for evolutionary and ecological studies. Phytochemistry 44:875–882CrossRefGoogle Scholar
  9. Bateman RM, Hollingsworth PM, Preston J, Yi-Bo L, Pridgeon AM, Chase MW (2003) Molecular phylogenetics and evolution of Orchidinae and selected Habenariinae (Orchidaceae). Bot J Linn Soc 142:1–40CrossRefGoogle Scholar
  10. Bergström G (1978) Role of volatile chemicals in Ophrys-pollinator interactions. In: Harborne G (ed) Biochemical aspects of plant and animal coevolution. Academic Press, New York, pp 207–230Google Scholar
  11. Bergström G, Birgersson G, Groth I, Nilsson AL (1992) Floral fragrance disparity between three taxa of lady’s slipper Cypripedium calceolus (Orchidaceae). Phytochemistry 31:2315–2319CrossRefGoogle Scholar
  12. Blanco MA, Barboza G (2005) Pseudocopulatory pollination in Lepanthes (Orchidaceae: Pleurothallidinae) by fungus gnats. Ann Bot 95:763–772CrossRefPubMedGoogle Scholar
  13. Bogdany FJ (1978) Linking of learning signals in honey bee orientation. Behav Ecol Sociobiol 3:323–336CrossRefGoogle Scholar
  14. Borg-Karlson A-K (1990) Chemical and ethological studies of pollination in the genus Ophrys (Orchidaceae). Phytochemistry 29(5):1359–1387CrossRefGoogle Scholar
  15. Bower CC (1996) Demonstration of pollinator-mediated reproductive isolation in sexually deceptive species of Chiloglottis (Orchidaceae: Caladeniinae). Aust J Bot 44:15–33Google Scholar
  16. Cameron KM, Chase MW, Whitten MW, Kores PJ, Jarrell DC, Albert VA, Yukawa T, Hills HG, Goldman DH (1999) A phylogenetic analysis of the Orchidaceae: evidence from RBCL nucleotide sequences. Am J Bot 86(2):208–224Google Scholar
  17. Coleman E (1927) Pollination of the orchid Cryptostylis leptochila. Victorian Naturalist 44:20–22Google Scholar
  18. Cozzolino S, Aceto S, Caputo P, Widmer A, Dafni A (2001) Speciation processes in eastern Mediterranean Orchis s.l. species: molecular evidence and the role of pollination biology. Isr J Pl Sci 49:91–103Google Scholar
  19. Cozzolino S, D’Emerico S, Widmer A (2004) Evidence for reproductive isolate selection in Mediterranean orchids: karyotype differences compensate for the lack of pollinator specificity. Biol Lett 271:259–262Google Scholar
  20. Cozzolino S, Schiestl FP, Müller A, De Castro O, Nardella A, Widmer A (in press) Evidence for pollinator sharing in Mediterranean nectar mimic orchids: absence of premating barriers? Proc R Soc Lond BGoogle Scholar
  21. Dafni A, Ivri Y (1981) Floral mimicry between Orchis israelitica Baumann and Dafni (Orchidaceae) and Bellevalia felexuosa Boiss (Liliaceae). Oecologia 49:229–232CrossRefGoogle Scholar
  22. Dafni A (1983) Pollination of Orchis caspia – a nectarless plant which deceives the pollinators of nectariferous species from other plant families. J Ecol 71:467–474Google Scholar
  23. Dafni A (1984) Mimicry and deception in pollination. Annu Rev Ecol Syst 15:259–278CrossRefGoogle Scholar
  24. Dafni A (1987) Pollination in Orchis and related genera: evolution from reward to deception. In: Arditti J (ed) Orchid Biology: reviews and perspectives. Cornell University Press, Ithaca and London, pp 79–104Google Scholar
  25. Dafni A, Bernhardt P (1990) Pollination of terrestrial orchids of southern Australia and the Mediterranean region. In: Hecht MK, Wallace B, Macintyre RJ (eds) Evolutionary Biology 24. Plenum Press, New York, pp 193–252Google Scholar
  26. Darwin C (1885) On the various contrivances by which orchids are fertilised by insects, 2nd edn. John Murray, LondonGoogle Scholar
  27. Daumann E (1971) Zum Problem der Täuschblumen. Preslia 43:304–317Google Scholar
  28. Dressler R (1981) The orchids – natural history and classification. Harvard Univ Press, Cambridge, MAGoogle Scholar
  29. Ehrendorfer F (1980) Hybridisierung, Polyploidie und Evolution bei europäisch-mediterranen Orchideen. Die Orchidee Sonderheft 15–34Google Scholar
  30. Faegri K, van der Pijl L (1979) The principles of pollination ecology. Pergamon Press, OxfordGoogle Scholar
  31. Fritz A-L, Nilsson A (1996) Reproductive success and gender variation in deceit-pollinated orchids. In: Lloyd DG, Barrett SCH (eds) Floral biology: studies on floral evolution in animal-pollinated plants. Chapman & Hall, New York, pp 319–338Google Scholar
  32. Galizia CG, Kunze J, Gumbert A, Borg-Karlson A-K, Sachse S, Markl C, Menzel R (2005) Relationship of visual and olfactory signal parameters in a food-deceptive flower mimicry system. Behav Ecol 16:159–168Google Scholar
  33. Gigord LDB, Macnair MR, Smithson A (2001) Negative frequency dependent selection maintains a dramatic flower color polymorphism in the rewardless orchid Dactylorhiza sambucina (L.) Soò. Proc Natl Acad Sci 98:6253–6255CrossRefPubMedGoogle Scholar
  34. Gigord LDB, Macnair MR, Stritesky M, Smithson A (2002) The potential for floral mimicry in rewardless orchids: an experimental study. Proc R Soc Lond B 269:1389–1395CrossRefGoogle Scholar
  35. Gill DE (1989) Fruiting failure, pollinator inefficiency, and speciation in orchids. In: Otte D, Endler JA (eds) Speciation and its consequences. Sinauer Associates, Sunderland, pp 458–481Google Scholar
  36. Grant PR, Grant BR, Markert JA, Keller L, Petren K (2004) Convergent evolution of Darwin’s Finches caused by introgressive hybridization and selection. Evolution 58(7):1588–1599PubMedGoogle Scholar
  37. Gumbert A, Kunze J (2001) Colour similarity to rewarding model affects pollination in a food deceptive orchid, Orchis boryi. Biol J Linn Soc 72:419–433CrossRefGoogle Scholar
  38. Heinrich B (1975) Bee flowers: a hypothesis on flower variety and blooming times. Evolution 29:325–334Google Scholar
  39. Hodges SA, Arnold ML (1994) Columbines – a geographically widespread species flock. Proc Natl Acad Sci 91:5129–5132PubMedGoogle Scholar
  40. Johnson SD (1994) Evidence for Batesian mimicry in a butterfly-pollinated orchid. Biol J Linn Soc 53:91–104CrossRefGoogle Scholar
  41. Johnson SD, Steiner KE (1997) Long-tongued fly pollination and evolution of floral spur length in the Disa draconis complex (Orchiaceae). Evolution 51:45–53Google Scholar
  42. Johnson SD, Linder HP, Steiner KE (1998) Phylogeny and radiation of pollination systems in Disa (Orchidaceae). Am J Bot 85:402–411Google Scholar
  43. Johnson SD, Nilsson LA (1999) Pollen carryover, geitonogamy, and the evolution of deceptive pollination systems in orchids. Ecology 80(8):2607–2619Google Scholar
  44. Johnson SD (2000) Batesian mimicry in the non-rewarding orchid Disa pulchra, and its consequences for pollinator behavior. Biol J Linn Soc 71:119–132CrossRefGoogle Scholar
  45. Johnson SD, Alexandersson R, Linder HP (2003a) Experimental and phylogenetic evidence for floral mimicry in a guild of fly-pollinated plants. Biol J Linn Soc 80:289–304CrossRefGoogle Scholar
  46. Johnson SD, Craig PI, Nilsson AL, Ågren J (2003b) Pollination success in a deceptive orchid is enhanced by co-occurring rewarding magnet plants. Ecology 84(11):2919–2927Google Scholar
  47. Johnson SD, Craig PI, Ågren J (2004) The effects of nectar addition on pollen removal and geitonogamy in the non-rewarding orchid Anacamptis morio. Proc R Soc Lond B 271:803–809CrossRefGoogle Scholar
  48. Jones DL, Clements ML, Sharma IK, Mackenzie AM (2001) A new classification of Caladenia R. Br. (Orchidaceae). The Orchadian 13:389–419Google Scholar
  49. Kocyan A, Endress PK (2001) Floral structure and development of Apostasia and Neuwiedia (Apostasioideae) and their relationships to other Orchidacea. Int J Plant Sci 162(4):847–867CrossRefGoogle Scholar
  50. Kores PJ, Molvray M, Weston PH, Hopper SD, Brown AP, Cameron KM, Chase MW (2001) A phylogenetic analysis of Diurideae (Orchidaceae) based on plastid DNA sequence data. Am J Bot 88:1903–1914Google Scholar
  51. Kullenberg B (1961) Studies in Ophrys pollination. Almquist & Wiksells Boktrykeri AB, UppsalaGoogle Scholar
  52. Kullenberg B, Bergström G (1976) Hymenoptera aculeata as pollinators of Ophrys orchids. Zool Scr 5:13–23Google Scholar
  53. Kunze J, Gumbert A (2001) The combined effect of color and odor on flower choice behavior of bumble bees in flower mimicry systems. Behav Ecol 12:447–456CrossRefGoogle Scholar
  54. Lammi A, Kuitunen M (1995) Deceptive pollination of Dactylorhiza incarnata: an experimental test of the magnet species hypothesis. Oecologia 101:500–503CrossRefGoogle Scholar
  55. Laverty TM (1992) Plant interactions for pollinator visits: a test of the magnet species effect. Oecologia 89:502–508Google Scholar
  56. Mant J, Schiestl FP, Peakall R, Weston PH (2002) A phylogenetic study of pollinator conservatism among sexually deceptive orchids. Evolution 56:888–898PubMedGoogle Scholar
  57. Mant J, Peakall R, Weston P (in press a) Specific pollinator attraction and the diversification of sexually deceptive Chiloglottis (Orchidaceae). Pl Syst EvolGoogle Scholar
  58. Mant J, Brändli C, Vereecken NJ, Schulz CM, Francke W, Schiestl FP (in press b) Cuticular hydrocarbons as sex pheromone of the bee Colletes cunicularius and the key to its mimicry by the sexually deceptive orchid, Ophrys exaltata. J Chem EcolGoogle Scholar
  59. Mant J, Peakall R, Schiestl FP (in press c) Does selection on floral odor promote differentiation among populations and species of the sexually deceptive orchid genus, Ophrys? EvolutionGoogle Scholar
  60. Maynard Smith J (2002) Evolutionary genetics. Oxford University Press, OxfordGoogle Scholar
  61. Menzel R (1985) Learning in honey bees in an ecological and behavioral context. In: Hölldobler B, Lindauer M (eds) Experimental behavioral ecology. Gustav Fischer, Stuttgart, pp 55–74Google Scholar
  62. Moya S, Ackerman JD (1993) Variation in the floral fragrance of Epidendrum ciliare (Orchidaceae). Nord J Bot 13:41–47Google Scholar
  63. Neiland MRM, Wilcock CC (1998) Fruit set, nectar reward, and rarity in the Orchidaceae. Am J Bot 85:1657–1671Google Scholar
  64. Nilsson AL (1979) Anthecological studies of the Lady’s Slipper, Cypripedium calceolus (Orchidaceae). Bot Notiser 132:329–347Google Scholar
  65. Nilsson AL (1980) The pollination ecology of Dactylorhiza sambucina (Orchidaceae). Bot Notiser 133:368–385Google Scholar
  66. Nilsson AL (1983) Mimesis of bellflower (Campanula) by the red helleborine orchid Cephalanthera rubra. Nature 305:799–800CrossRefGoogle Scholar
  67. Nilsson AL (1984) Anthecology of Orchis morio (Orchidaceae) at its outpost in the north. Nov Acta Reg Soc Sci Ups V:(C3):167–179Google Scholar
  68. Nilsson AL (1988) The evolution of flowers with deep corolla tubes. Nature 334:147–149CrossRefGoogle Scholar
  69. Nilsson AL (1992) Orchid pollination biology. TREE 7(8):255–259Google Scholar
  70. Nilsson LA, Rabakonandriana E, Pettersson B (1992) Exact tracking of pollen transfer and mating in plants. Nature 360:666–668CrossRefGoogle Scholar
  71. O’Connell LM, Johnston M (1998) Male and female pollination success in a deceptive orchid, a selection study. Ecology 79(4):1246–1260Google Scholar
  72. Paulus HF, Gack C (1990) Pollinators as prepollinating isolation factors: Evolution and speciation in Ophrys (Orchidaceae). Isr J Bot 39:43–79Google Scholar
  73. Peakall R, James SH (1989) Outcrossing in an ant pollinated clonal orchid. Heredity 62:161–167Google Scholar
  74. Peakall R (1989) A new technique for monitoring pollen flow in orchids. Oecologia 79:365–365CrossRefGoogle Scholar
  75. Peakall R (1990) Responses of male Zaspilothynnus trilobatus Turner wasps to females and the sexually deceptive orchid it pollinates. Funct Ecol 4:159–167Google Scholar
  76. Peakall R, Handel SN (1993) Pollinators discriminate among floral heights of a sexually deceptive orchid: implications for selection. Evolution 47(6):1681–1687Google Scholar
  77. Peakall R, Beattie AJ (1996) Ecological and genetic consequences of pollination by sexual deception in the orchid Caladenia tentactulata. Evolution 50(69):2207–2220Google Scholar
  78. Peakall R, Schiestl FP (2004) A mark-recapture study of male Colletes cunicularius bees: implications for pollination by sexual deception. Behav Ecol Sociobiol 56:579–584CrossRefGoogle Scholar
  79. Pellegrino G, Caimi D, Noce ME, Musacchio A (2005) Effects of local density and flower color polymorphism on pollination and reproduction in the rewardless orchid Dactylorhiza sambucina (L.) Soò. Plant Syst Evol 251:119–129CrossRefGoogle Scholar
  80. Petterson B, Nilsson AL (1993) Floral variation and deceit pollination in Polystachya rosea (Orchidaceae) on an inselberg in Madagascar. Opera Bot 121:237–245Google Scholar
  81. van der Pijl L, Dodson CH (1966) Orchid flowers / Their pollination and evolution. University of Miami Press, Coral GablesGoogle Scholar
  82. Pridgeon AM, Bateman RM, Cox AV, Hapemann JR, Chase MW (1997) Phylogenetics of subtribe Orchidinae (Orchidoideae, Orchidaceae) based on nuclear ITS sequenes. 1. Intergeneric relationships and polyphyly of Orchis sensu lato. Lindleyana 12(2):89–109Google Scholar
  83. Pouyanne A (1917) La fecundation des Ophrys par les insectes. Bull Société d’Histoire Naturelle l’Afrique du Nord 8:6–7Google Scholar
  84. Rieseberg LH, Church SA, Morjan CL (2003) Integration of populations and differentiation of species. New Phytologist 161:59–69CrossRefGoogle Scholar
  85. Roubik DW (2000) Deceptive orchids with Meliponini as pollinators. Plant Syst Evol 222(1–4):271–279CrossRefGoogle Scholar
  86. Roy BA, Widmer A (1999) Floral mimicry: a fscinating yet poorly understood phenomenon. Trop Plant Sci 4(8):325–330CrossRefGoogle Scholar
  87. Rudall PJ, Bateman RM, Fay MF, Eastman A (2002) Floral antomy and systematics of Alliaceae with particular reference to Gilliesia, a presumed insect mimic with strongly zygomorphic flowers. Am J Bot 89:1867–1883Google Scholar
  88. Sabat AM, Ackerman JD (1996) Fruit set in a deceptive orchid: the effect of flowering phenology, display size, and local floral abundance. Am J Bot 83(9):1181–1186Google Scholar
  89. Schemske DW (1980) Evolution of floral display size in the orchid Brassavola nodosa. Evolution 34(3):489–493Google Scholar
  90. Schiestl FP, Ayasse M, Paulus HF, Erdmann D, Francke W (1997) Variation of floral scent emission and post pollination changes in individual flowers of Ophrys sphegodes subsp. sphegodes (MILLER). J Chem Ecol 23(12):2881–2895Google Scholar
  91. Schiestl FP, Ayasse M, Paulus HF, Löfstedt C, Hansson BS, Ibarra F, Francke W (1999) Orchid pollination by sexual swindle. Nature 399:421–422CrossRefGoogle Scholar
  92. Schiestl FP, Ayasse M, Paulus HF, Löfstedt C, Hansson BS, Ibarra F, Francke W (2000) Sex pheromone mimicry in the Early Spider Orchid (Ophrys sphegodes): patterns of hydrocarbons as the key mechanism for pollination by sexual deception. J Comp Physiol A 186:567–574CrossRefPubMedGoogle Scholar
  93. Schiestl FP, Ayasse M (2002) Do changes in floral odor cause speciation in sexually deceptive orchids? Plant Syst Evol 234(1–4):111–119CrossRefGoogle Scholar
  94. Schiestl FP, Marion-Poll F (2002) Detection of physiologically active flower volatiles using gas chromatography coupled with electroantennography. In: Jackson JF, Linskens HF, Inman R (eds) Molecular Methods of Plant Analysis, vol 21, Analysis of Taste and Aroma. Springer, Berlin, pp 173–198Google Scholar
  95. Schiestl FP, Peakall R, Mant J, Ibarra F, Schulz C, Francke S, Francke W (2003) The chemistry of sexual deception in an orchid–wasp pollination system. Science 302:437–438CrossRefPubMedGoogle Scholar
  96. Schiestl FP, Peakall R, Mant J (2004) Chemical communication in the sexually deceptive orchid genus Cryptostylis. Bot J Lin Soc 144:199–205CrossRefGoogle Scholar
  97. Schiestl FP (2004) Floral evolution and pollinator mate-choice in a sexually deceptive orchid. J Evol Biol 17:67–75CrossRefPubMedGoogle Scholar
  98. Schieste FP, Peakall R (in press) Two orchids attract different pollinators with the same floral odor compound: ecological and evolutionary implicationsGoogle Scholar
  99. Singer RB (2002) The pollination mechanism in Trigonidium obtusum Lindl (Orchidaceae : Maxillariinae): sexual mimicry and trap-flowers. Ann Bot 89:157–163CrossRefPubMedGoogle Scholar
  100. Singer RB, Flach A, Koehler S, Marsaioli AJ, Amaral ME (2004) Sexual mimicry in Mormolyca ringens (Lindl.) Schltr. (Orchidaceae: Maxillariinae). Ann Bot 93:755–762CrossRefPubMedGoogle Scholar
  101. Smithson A, Macnair MR (1996) Frequency-dependent selection by pollinators: mechanisms and consequences with regard to behaviour of bumblebees Bombus terrestris (L.) (Hymenoptera: Apidae). J Evol Biol 9:571–588CrossRefGoogle Scholar
  102. Smithson A (2002) The consequences of rewardlessness in orchids: reward-supplementation experiments with Anacamptis morio (Orchidaceae). Am J Bot 89:1579–1587Google Scholar
  103. Smithson A, Gigord LDB (2002) Are there fitness advantages in being a rewardless orchid? Reward supplementation experiments with Barlia robertiana. Proc R Soc Lond B 268:1435–1441Google Scholar
  104. Soliva M, Kocyan A, Widmer A (2001) Molecular phylogenetics of the sexually deceptive orchid genus Ophrys (Orchidaceae) based on nuclear and chloroplast DNA sequences. Mol Phyl Evol 20(1):78–88CrossRefGoogle Scholar
  105. Soliva M, Widmer A (2003) Gene flow across species boundaries in sympatric, sexually deceptive Ophrys (Orchidaceae) species. Evolution 57:2252–2261PubMedGoogle Scholar
  106. Sprengel CK (1793) Das entdeckte Geheimniss in der Natur im Bau und in der Befruchtung der Blumen. Translation in Lloyd DG, Barrett SCH (eds) Floral Biology. Chapman & Hall, New York, pp 3–43Google Scholar
  107. Steiner KE, Whitehead VB, Johnson SD (1994) Floral pollinator divergence in two sexually deceptive South African orchids. Am J Bot 81(2):185–194Google Scholar
  108. Steiner KE (1998) The evolution of beetle pollination in a South African orchid. Am J Bot 85:1180–1193Google Scholar
  109. Stowe MK (1988) Chemical mimicry. In: Spencer KC (ed) Chemical mediation of coevolution. Academic Press, San Diego, pp 513–587Google Scholar
  110. Thakar JD, Krushnamegh K, Chauhan AK, Watve AV, Watve MG (2003) Nectarless flowers: ecological correlates and evolutionary stability. Oecologia 136:565–570CrossRefPubMedGoogle Scholar
  111. Thompson JD (1978) Effect of stand composition on insect visitation in two-species mixtures of Hieracium. Am Midland Naturalist 100:431–440Google Scholar
  112. Tremblay RL (1992) Trends in the pollination ecology of the orchidaceae: evolution and systematics. Can J Bot 70:642–650Google Scholar
  113. Tremblay RL, Ackerman JD, Zimmerman JK, Calvo RN (2005) Variation in sexual reproduction in orchids and its evolutionary consequences: a spasmodic journey to diversification. Biol J Linn Soc 84:1–54CrossRefGoogle Scholar
  114. Vogel S (1983) Ecophysiology of zoophilic pollination. In: Lange OL, Nobel PS, Osmond CB, Ziegler H (eds) Encyclopedia of Plant Physiology, Physiological plant ecology, new series, vol. 12c. Springer, Berlin, pp 560–611Google Scholar
  115. Vogel S (1993) Betrug bei Planzen: Die Täuschblumen. 1. Akademie der Wissenschaften und der Literatur, Mainz, Franz Steiner, StuttgartGoogle Scholar
  116. Wasserthal LT (1997) The pollinators of the Malagasy Star Orchids Angraecum sesquipedale, A. sororium and A. compactum and the evolution of extremely long spurs by pollinator shift. Bot Acta 110:343–359Google Scholar
  117. Wiens E (1978) Mimicry in plants. Evol Biol 11:365–403Google Scholar
  118. Wickler W (1968) Mimicry in plants and animals. Weidenfeld and Nicolson, LondonGoogle Scholar
  119. Wong BBM, Schiestl FP (2002) How an orchid harms its pollinator. Proc R Soc Lond B 269:1529–1532CrossRefGoogle Scholar
  120. Wong BBM, Salzmann C, Schiestl FP (2004) Pollinator attractiveness increases with distance from flowering orchids. Biol Lett 271:212–214CrossRefGoogle Scholar
  121. Yadav SR (1995) Pollination biology of the south west asian orchid Cottonia peduncularis. Hornbill 1:28–31Google Scholar

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© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Geobotanical InstituteETH ZürichZürich

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