- 17 — 



B. Rhizomes branching (Eucurcuma) 



a. Rhizome-complex consisting of middle sized falcate, upcurved 

 members, merithallia, long 50 — 100 mm., horizontal and growing 

 obliquely downward forming a new plant at their top and on the lower 

 side (very rarely on both sides) a series of secondary and tertiary 

 branches which are at first ovate, afterwards clavate and falcate, 

 when young internally and externally yellow to orange-coloured 

 (176—156), covered with snow-white, nerved, membranous scales, 

 afterwards dark-grey externally; dirty-orange coloured internally: 



a'. Internally orange-coloured; pendulous tubers with a yellow inner 

 cortex rarely quite orange: C. purpurascens. 



C. viridiflora. 

 C. colorata. 

 C. soloensis. 

 C. euchroma. 



b'. Internally lemon-yellow: C. brog. 



These species are difficult to distinguish by an exactdescription of 

 the rhizome complex. They all are called "tis" or "tingang" on the 

 sundanese market. All belong to the central-flowering-species. They 

 are however, not seldom confounded with the lateralflowering 



C. xanthorhiza. 



b. Rhizome-complex otherwise. 



a'. Rhizome-complex much branched, primary rhizome and rhizome- 

 branches straight, mostly longcontinuous in horizontal or oblique 

 or. vertical direction forming often on both sides, rectangularly 

 patent secondary and tertiary branches; terminal buds acute, 

 a^. Rhizomes slender and very -copiously and repeatedly branched; 

 rectangularly extant branches biseriate, all parts internally and 

 externally red-orange-yellow to miniate (151, 156, 161). 



C. domestica. 



b^. Rhizomes internally' light- or dark-citrine. 



a^. Rhizomes long, straight, or downward bent, mostly growing 

 downwards and more or less clavate, with rectangularly extant 

 branches never upcurved except when forming new plants, 

 externally white, (when old light-brown), internally yellow 

 (226 236, 231.) C. Heyneana. 



b^. Rhizomes mostly consisting of shorter members mostly upcurved 

 with very numerous snow-white short clavate branches, rarely 

 pinnate, mostly in one series on the inferior side of the branches; 

 internally (when young) light-citrine 236, 241, with white 

 bark. C. Mangga. 



c^. Rhizomes irregularly branched, colour internally light straw- 

 yellow. C. Mangga, var. 



