Title: A study of the genus L̲a̲t̲h̲y̲r̲u̲s̲
Subtitle: the genus L̲a̲t̲h̲y̲r̲u̲s̲, the sweet pea in botany and horticulture, classification of garden varieties of the sweet pea, winter flowering sweet peas
Subjects: Lathyrus, Sweet peas