102. LYCOPODIUM. 29 



2. Ittunduta. Rhizome (main stem) short-trailing, branched; 

 branches few, trailing, rooting; spikes lateral on the stem 

 or branches. (Not in Malaya). 



3. Ctavata. Rhizome (main stem) wide-trailing, branched; 

 branches several, ascending, not tree-like, nor scandent; 

 spikes terminal on the branchlets. 



4. Cemwa. Rhizome (main stem) wide-trailing (') ; shoots se- 

 veral, erect with tree-like habit or scandent ; spikes terminal 

 on the branchlets, or forming compound panicles separate 

 from the barren branches. 



Diphasiuin. At least the branchlets dorsiventral or com- 

 planato-bilateral, with the barren leaves heteromorphous, secund 

 or platystichous. 



§ 1. UROSTACHYS. 



a. SelagO. 1. Euselago. 



1. Leaves serrulate or denticulate, at least toivards the apex. 

 a. Leaves narroiced towards the base. 



b. Texture not rigid. (1) L. serratum. 



h.h. Texture rigid. 



c. Leaves deflexed, to VU mm. broad. (2) L. goliathense. 

 c.c. Leaves not deflexed, or more than Vli mm. broad. 



(3) L. Beccarii. 

 a.a. Leaves not or hardly narrowed towards the base. (4) L. miniatum. 

 ±.±. Leaves quite entire, at best obsoletely serrulate. 



». Leaves obtuse. ' (5) L. Hamiltonii. 



*.#. Leaves not obtuse. 



3. Leaves under 10 mm. long. 

 S. Leaves ascending. 



f. Leaves lax. (6) L. Macgregorii. 



$.f . Leaves dense. 



(') Generally wanting in the herbaria. 



