CONTENTS 



Page 



Part I. The genus Lathyrus 66 1 



Botany of the genus 66 1 



Artificial key to the species of Lathyrus 663 



Descriptions of the species 667 



History of the cultivated lathyrus 673 



Descriptions of cultivated species 674 



Part II. The sweet pea in botany and in horticulture 678 



History of the sweet pea 678 



Botanical history 678 



British horticultural history 684 



American horticultural history 691 



Evolution 693 



Pollination 695 



Dwarf sweet peas 697 



Varieties of cupid sweet peas 698 



Unpopularity of the type 699 



Garden culture of the sweet pea 700 



The soil 700 



The seed 701 



Planting 702 



Supports 706 



Cultivation 709 



Summary 710 



Insects and diseases 710 



Insects 710 



Diseases 711 



Exhibiting sweet peas 711 



660 



