(574 CXXV. OHCIIIDACE.^. 



Flowers from lateral scapes rising 

 from the base of tlie pseudobulbs 

 or from the rhizome between 

 tliem, solitary or in heads, 

 umbels, or racemes ; leaves 

 solitary and coriaceous, or binary 

 and chartaceous, usually from 

 the apices of pseudobulbs on a 

 generally prolonged rhizome 

 (occasionally the rhizome and 

 less often the pseudobulbs incon- 

 spicuous or absent) ; poUinia free 

 or occasionally attached by their 

 bases to a small ball of trans- 

 lucent tissue, the inner pair 

 always smaller than the outer. 

 Lateral sepals greatly exceed- 

 ing the dorsal ; flowers 



umbellate 5. Cikrhopktalum. 



Lateral sepals not greatly ex- 

 ceeding the dorsal. 



Lateral sepals alongside or 

 under the lip ; flowers 

 racemose or spicate ; 



poUinia free G. Bui,BOPiiYLLr>r. 



Lateral sepals spreading ; 

 scape 1 -flowered ; pol- 

 linia subcoherent in 



pairs in each cell 7. Trias. 



Stems jointed, composed of elongated 

 pseudobulbs strung on a woody core ; 

 leaves solitary or binary, chartaceous ; 

 flowers iu racemes ; column footless . 8. Phomdota. 

 Tufted stemless herbs ; leaves radical ; 

 pseudobulbs ; flowers in panicles ; 



column footless 9. Joskpuia. 



PoUinia 8. 



Epiphytic pseudobulltous herbs, usually email ; 

 inflorescence lateral or terminal, racemose or 

 capitate ; flowers with a mentum ; column 

 prolonged below into a foot; lip incumbent on 

 the foot of the column ; pollinia subequal, all 

 cohering or cohering by fours to a common 

 membrane. 



Sepals connivent at the base, all or the 

 lateral only connate; pseudobulbs small, 



discoid, reticulate 10. PoRPAX. 



Sepals and petals free ; pseudobulbs not 



discoid 11. Eria. 



Epiphytic or terrestrial herbs ; stems slender or 

 equally thiv'kened along their whole length ; 

 leaves distichous, lanceolate, glaucous ; lip 

 adnat« to the base of the footless column, 

 shortly spurred ; side lobes invjlving the 

 eohunn ; midlohc fringed ; pollinia attached by 



fours to a granular membrane 12. Thunia. 



Pollinia 2 or 4, attached singly or in pairs or fours by one 

 or rarely two caudicles to a viscid gland derived from 

 the stigma. 

 Pollinia 2. 



Stem psoudobulbous or tuberous at the base. 



Terrestrial herbs ; llowers in pedunculate 

 racemes ; leaves plicate. 



