Victorian Plants. 87 



431. Epiphytal ... 432 



Usually terrestrial ... ... 433 



432. Lateral calyx-lobes broadly adnate to the united sta- 



mens and style (columna or gynostemium), forming a 

 conspicuous basal protrusion. 



Stems often turgescent, crowded and enlarging into pseudo- 

 bulbs ; flowers usually in a raceme ; basal protrusion 

 descending or almost horizontal ; labellum (labial petal) 

 generally membranous ; pollen-masses free in the anther- 

 cells, four, waxy, often two and two cohering ; fruit 

 turgid. Figure 112. Dendrobium. 1755 



Lateral calyx-lobes somewhat adnate to the united 

 stamens and style, without forming any conspicuous 

 basal protrusion. 



Labellum forming outwardly a thick protrusion ; pollen- 

 masses four, connate into two, waxy, fixed to a stipitule ; 

 fruit slender, elongated. Sarcochilus. 1756 



433. Flowers turned upside down ... ... ... ... 434 



Flowers erect or spreading ... ... ... ... 436 



434. United stamens and style elongated. 



Younger tuber distant from the older ; leaves never more 

 than one, always narrow ; flowers few in a raceme or 

 reduced to only two or rarely one ; empty bract one or 

 none ; calyx-lobes and lateral petals narrow ; labellum 

 almost horizontally fixed above rarely at the lower mar- 

 gin to a stalklike process ; united stamens and style 

 amply dilated, petal-like ; pollen powdery. Caleya. 1757 



United stamens and style abbreviated ... ... 435 



435. Leaves broadish, flat, two or few. 



Root-fibres fascicular, tuberously thickened ; leaves firm, 

 long-stalked ; flowers comparatively large, in a raceme ; 

 all calyx-lobes and the lateral petals narrow ; labellum ^ 

 long, with a slight median ridge and some callosity ; ' 

 pollen powdery. Cryptostylis. 1758 



