ABSTRACT

The seventeenth volume in a 29-volume set which contain all Charles Darwin's published works. Darwin was one of the most influential figures of the 19th century. His work remains a central subject of study in the history of ideas, the history of science, zoology, botany, geology and evolution.

chapter |4 pages

Introduction

chapter I|26 pages

Ophreae

chapter II|25 pages

Ophreae

chapter III|9 pages

Arethuseae

chapter IV|25 pages

Neotteae

chapter V|15 pages

Malaxeae and Epidendreae

chapter VI|20 pages

Vandeae

chapter VII|34 pages

Vandeae – Catasetidae

chapter IX|33 pages

Gradation of Organs, etc. Concluding Remarks