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Parameria glandulifera 
Parthenium argentatum (Guayale) 
Payena vars. for Gutta 
Raphionacme utilis (Encanda Rubber) 
Sapium Vars. for rubber 
Sphaerostilbe repens 
Tabernaemontana crassa 
Tuber-from a 
Urceole elastica and vars. VoL - date. page. 
Rubber producing Plants ... ... 8 Feb. ’09 40 
Articles on “Other Rubber Producing Plants” will be found under 
their respective headings. 
