. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. of poison ivy. THE COMPOUND LEAF 89. Fig. of poison sumac. 96. The Virginia creeper leaf has five leaflets,or is quinate (parts in fives). The dewberry andthe poison ivy have threeleaflets, or are ternate (partin threes). The jeffersonia(Fig. 86) has two leaflets,or is binate. Is this jef-fersonia leaf essentially pal-mate, or essentially pinnate ? 97. A leaf of the sqviirrel-corn (or dicentra) is shown,Fig. 87. It is evidentlyternate and palmate; buteach part is again di


. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. Fig. of poison ivy. THE COMPOUND LEAF 89. Fig. of poison sumac. 96. The Virginia creeper leaf has five leaflets,or is quinate (parts in fives). The dewberry andthe poison ivy have threeleaflets, or are ternate (partin threes). The jeffersonia(Fig. 86) has two leaflets,or is binate. Is this jef-fersonia leaf essentially pal-mate, or essentially pinnate ? 97. A leaf of the sqviirrel-corn (or dicentra) is shown,Fig. 87. It is evidentlyternate and palmate; buteach part is again divi-ded into three, and eachof these is again variouslydivided and cut. Theleaf, therefore, is biternate(or twice ternate). The fig. 86. Binate leaf of jeffersonia.


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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany