382 ORCHIDACE^. 



j Flowers 3/4 inch or more in tall racemes d 



^ \ Flowers 1/4 inch e 



? Flowers mauve or white, with long spur./. 391. calanthe. 

 d < Flowers yellowish, 3/4 to i inch, often without leaves : lip 



( saccate /. 392. eulophia. 



C Flowers many, yellowish, in a close spiral : leaves few, small. 



j /• 397- SPIRANTHES. 



J Flowers many, racemed coloured : leaves broad-folded 



^ I along the nerves /. 384. microstylis. 



I Flowers few, white ; lip bifid and fringed : leaves roundish 



[ flat /. 398. CHEIROSTYLIS. 



No obvious rhizome or tuber g 



\Tubers or pseudobulbs . . . . h 



Orchids of rocks or trees : stem stout : leaves hard : 



flowers pink p. 394. ^rdes. 



Stem slender : leaves cylindrical, quill-like : flowers small 

 g \ with 1/2 inch sac, in drooping racemes, yellowish or 



pink /. 396. SACCOLABIUM. 



Leaves sword-like : flowers many, small, whorled or 

 scattered along erect spikes . . p. 382. oberonia. 



Tubers flat and round . , p. 386. eria. 



Tubers banana-like, close together : flowers 3/4 to i 1/2 



h <J inches p- 388. ccelogyne. 



I Leaves solitary, jointed to the erect tubers at intervals 

 [ along a creeping stem , . . p, 385. cirrhopetalum. 

 Flowers pink with two spurs ..../. 406. satyrium. 

 Flowers 1/4 inch, sepals and petals forming a flattish hood, 

 column with two lateral spinal processes, lip with two 

 narrow spreading lobes, no spur. . , /. 407. disperis. 

 Flowers white or purplish ; always with spur or sac . . . 



/. 398, HABENARIA, ETC. 



\ 



OBERONIA. F.B.L 148 I. 



Epiphytes growing on the branches of trees to which 

 they attach themselves by roots. Leaves in two ranks, 

 closely fitting at the base, sword-like (i.e., compressed 

 sideways as in Iris) thick, equally green on both sides. 

 Inflorescence terminal. Flowers very small, in dense 

 cylindrical spikes 3 to 4 inches by 54 inch, terminating 

 the main axis. 



Sepals broadly ovate. Petals smaller. Lip four or 

 two-lobed, concave embracing the short column to which 



