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ORCHIDACEAE 
7. Collabiinae: Collabium. 
III. Duplicatae (leaves folded in bud) : 
8. Liparidinae : Liparis, Corallorhiza. 
9. Polystachyinae : Galeandra. 
10. Podochilinae : Podochilus. 
11. Glomeriiiae : Ceratostylis. 
12. Pleurothallidinae : Masdevallia, Pleurothallis. 
13. Laeliinae: Epidendrum, Cattleya, Laelia. 
14. Sobraliinae: Sobralia. 
p. Pleuranthae (pleuranthous sympodial) : 
I. Convolutae (leaves convolute in bud ) : 
15. Phajinae: Phajus, Calanthe. 
16. Cyrtopodiinae : Lissochilus. 
17. Catasetinae: Mormodes, Catasetum. 
1 8. Lycastinae : Lycaste. 
19. Gongorinae: Coryanthes, Stanhopea, Gongora. 
20. Zygopetalinae : Zygopetalum. 
II. Duplicatae (leaves folded in bud) : 
1. Sympodiales (sympodial). 
21. Dendrobiinae : Dendrobium, Eria. 
22. Bolbophyllinae : Drymoda, Bolbophyllum. 
23. Thelasinae: Thelasis. 
24. Cymbidiinae: Cymbidium. 
25. Thecostelinae : Thecostele. 
26. Steniinae: Stenia. 
27. Maxillariinae : Maxillaria, Scuticaria. 
28. Oncidiinae: Ada, Odontoglossum, Oncidium. 
20. Huntleyinae : Pescatorea. 
2. Monopodiales (monopodial). 
30. Dichaeinae: Dichaea. 
31. Sarcanthinae : Phalaenopsis, Vanda, Angraecum, Polyrrhiza, 
Aerides. 
[Placed in Microspermae by Benth-Hooker, in Gynandrae by 
Warming]. 
Orchideae (Benth. -Hooker) = Orchidaceae. 
Orchis (Tourn.) Linn. (incl. Anacamptis Rich., Himantoglossum 
Spreng. ). Orchidaceae (3). 70 sp. Eur., temp. As., N. Afr., Am. 
(10 sp. in Britain, of which the most familiar are O. mascula L., the 
early purple orchis, and O. maculata L., the spotted orchis). They 
are sympodial perennials forming one tuber each year (see Orchida- 
ceae for description). The firs, stand in a dense spike and have an 
ingenious mechanism for insect fertilisation. The anther is basitonic 
and well above the stigmas. The rostellum has an outer firm pouch, 
inside which is the viscid substance to which are firmly attached the 
caudicles of the pollinia. An insect entering the fir. probes the spur 
of the labellum and its back comes into contact with the rostellum and 
