CONTENTS 



INTRODUCTION 



Number of species, genera i 



Geographic distribution i 



Kinds of traps tabulated 2 



Analogs 3 



Origin, evolution 7 



Literature ° 



Chapter I: HELIAMPHORA 



Heliamphora mdans 9 



Discovery 9 



Habitat 9 



Appearance 9 



The pitcher 10 



Abnormal leaves 11 



Other species ^ ^ 



Habitat " 



The pitcher 12 



Drainage slit 12 



Histology ^3 



Trichomes ^3 



Glands ^4 



Prey and its fate ^^ 



Literature ^° 



Chapter II: SARRACENIA 



Original description i7 



Known species . . . ._ i? 



Geographical distribution 17 



Sarracetiia purpurea 18 



History i^ 



Pitcher 1° 



Early ideas 18 



Distribution 



Pitcher-leaf 



Form 



Structure 



Outer surface 



Inner surface 20 



Leaves, juvenile 22 



Histology 



Glands 



Trichomes 



Sarracetiia psittacina 



Form 



19 

 19 

 19 

 19 

 20 



22 

 22 

 22 

 23 

 23 



Habitat 23 



Pitcher 24 



Development 24 



Interior surface 25 



Sarracetiia Conrtii 26 



Sarracetiia ttiinor . 26 



Sarracetiia Druttittiotdii . _ 27 



Precarious footing for flies .... 29 



Sarracetiia flava 29 



Sarracetiia Jonesii 3° 



Leaf 30 



Morphology 3° 



Digestion 32 



Absorption 32 



Animal inhabitants 35 



Literature 3^ 



Chapter III: DARLINGTONIA CALIFORNICA 



Distribution 4° 



Habitat 4© 



Habit 40 



Leaves 4° 



Juvenile 4° 



Adult 42 



Form 42 



Color 43 



Fenestrations 43 



Entrance 43 



Structure 43 



Wing 43 



Fishtail 43 



Trichomes 44 



Glands 44 



Absorption 45 



Locus of 45 



Pitcher leaf 46 



Development 4" 



Digestion 4° 



Absorption 48 



Pitcher fluid 48 



Wetting power 48 



EnzjTnes 49 



Bacteria 49 



Literature 49 



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