2 ARISAEMA TRIPHYLLUM 
years. Findings have been checked up by observation of two or 
more years in nearly every case. Almost three thousand plants 
have been under observation in the field during this period, and 
Wal baked 
We 
Fic. 1. A clump of “Jacks” showing general habit. X 14 (about). 
nearly two thousand plants have been grown in cultures under 
controlled conditions. The data presented, unless otherwise 
stated, may be considered as true of plants in Monroe County, 
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