124 



II. VANDEiE. 

 Labellum spurred. 

 Lal)eIIum without a spur. 

 1 Spur short or saccate. 

 1 Spur long, fihform or cylindrical. 

 2 Epiphytal. Stems elongated. 

 2 Epiphytal Psendobulbs tuberiform. 



3 Sepals and j^etals subequal, free. Scapes usually 

 leafless. 

 4 Pollinia flat, on a single stipe. 



4 Pollinia filiform on two stijjes, quite distinct or 

 united only by the glands. 



m. NEOTTIE^. 

 An erect herb. Leaves narrow, sessile. 

 A decumbent herb. Leaves ovate, acute, petiolate. 



IV. OPHRYIDE^. 



Ansellia. 

 polystachya. 



eulophia. 

 Angr^oum. 



Mystacidium. 



Zeuxine. 

 Platylepis. 



KEY TO SDBTRIBES, 



Anthers erect. Glands of the pollinia nude or more 

 rarely half included in the channelled or in- 

 flexed lobes of the rostellum. 



Anthers reclined, or reflexed on the back of the column, 

 more rarely sub-erect. Stigma large, pseudo 

 terminal, or distant fi'om the anther and sub- 

 adnate to the lip. 



Odd sepal posticous, more rarely anticous, cohering 

 with the petals into a single galeate, fornicate 

 or explanate piece. Lip adnate to the face of the 

 column, usually produced above the junction 

 into a variously shaped appendage. Cells of the 

 anther usually distant, less commonly (in Dis- 

 peris only) approximate. Stigma bilobed or 

 bipartite, the lobes separated by the intervening 

 adnate lip ; or stamens 5, distant. 



A. HABENARIEiE. 



A. Habenajiie^. 



B DisEj;. 



C CORYCIE^. 



KEY TO GENERA. 



Labellum spurless. Leaves clustered at base. 

 Labellum spurless. Cauline leaves present. 

 Central lobe of rosteUum narrow or obsolete. 

 Central lobe of rosteUum ample, erect. 

 1 Petals long clawed, lamina, fimbriate, many leaved. 

 I Petals longer than sepals, erect, spike secund. 

 1 Petals equalling sepals. Flowers spicate or racemose. 

 2 Central lobe of rosteUum complicate. Leaves few 

 or radical. 



Stenoglottis. 

 Herminium. 



huttonia. 



Holothrix. 



Habenaria. 



Cynorohis 



