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a*. Rhizome citrine; Flowers light-yellow: C. brogX 



b*. Rhizome orange-yellow: C. soloensis.] 



C. ochrorhiza. 



B. Inflorescence lateral. 



a. Leaves quite green: 



a'. Inflorescence with acute, elliptical or elliptical-lanceolate floral-bracts ; 

 with lanceolate white intermediate bracts and pink bracts of the 

 coma. Flowers short and broad; lip and staminodia nearly orbicular ; 

 endlobe not protruding. Leaves commonly less than 3 times longer 

 than broad: C. Heyneana.^^^ 



b^ Floral-bracts rounded, small, coma bracts violet, obtuse, without a 

 mucro. Leaves more than 3 times longer than broad. 

 Flowers narrow, with a long and deflexed end-lobe of the lip: 



C. Mongga. 



c'. Floral bracts very broad rounded or subtruncate, free parts not 

 longer or shorter than the pouches, all bracts without a mucro. 

 Endlobe of the labellum broad not much protruded, Leaves pale 

 seagreen at the backside: C. Lörzingii. 



b. Leaves with a feather-shaped light- or dark-purple-brown cloud along 

 the whole costa or a part of it. 



a'. Cloud at length vanishing and the full-grown leaf quite green, 

 a^. Rhizome yellow and odoriferous: C. Mangga van rubrinervia. 

 b^. Rhizome nearly colourless, nearly scentless: 



C. Mangga var. sylvestris. 

 b'. Leaves with a persistent purple-brown cloud along the costa. 

 diK Foliate stem dark-brown. Petals purple-brown-red, costa brown 

 along the edges to near the base and in the upper half somewhat 

 broader brown; rhizome partly blue, partly light-yellow or light- 

 green: C. phaeocaulis. 

 b^. Foliate stem green, 

 a^. Leaves with a wide brown cloud on both sides of the costa, 

 only in the upper-half of the leaf. Petals purple-brown-red. 

 Tuber and rhizome internally blue and partly white, the young 

 rhizome aeruginous: C. aeruginosa. 

 b^. Leaves with a brown cloud along the costa, feathery spreading, 

 often continuous to the petiole; costa itself mostly in its upper- 

 part also brown-coloured, for the rest green ; petals rather white ; 

 flower short, lip and staminodia short and broad, tuber internally 

 light-yellow: C. Zedoaria. 

 c^. Leaves with a brown cloud along the sides of the costa, 

 which itself is green, petals pink, rhizome and root-tubers 

 internally deep-orange: C. xanthorhiza. 



