CONTENTS. 



PAGK 



INTRODUCTION. THE DEPABTMENTS OF THE SCIENCE .... 1 



CHAPTER I. OUTLINES OF THE GENERAL MORPHOLOGY 



OF PH^ENOGAMOUS PLANTS 6 



CHAPTER II. MORPHOLOGY AND DEVELOPMENT OF THE 



EMBRYO AND SEEDLING 9 



The Embryo, its Nature, Structure, and Parts 



Development of the Dicotyledonous Embryo in Maple ... 10 



In Ipomoea, or Morning Glory, &c., with Albuminous Seeds . 13 



In Embryos with thickened Cotyledons If 



As of Almond, Beech, Bean, &c 17 



With Hypogseous Germination and no Elongation of Caulicle 19 



In Megarrhiza, &c., with concreted Petioles to the Cotyledons 21 

 In Ipomoea leptophylla with foliaceous and long-petioled 



Cotyledons and no elongation of Caulicle 22 



In Pumpkin, &c., with no Primary Root 22 



The Polycotyledonous Embryo 23 



The Monocotyledonous Embryo of Iris, Onion, Cereal Grains 24 



Pseudo-monocotyledonous and Acotyledonous Embryo ... 26 



Dicotyledonous and Monocotyledonous Plants 27 



CHAPTER III. MORPHOLOGY AND STRUCTURE OF THE 



ORGANS OF THE PLANT IN VEGETATION . . 27 



SECTION I. OF THE ROOT 27 



Nature, Growth, and Composition 28 



Root-hairs 29 



Kinds of Roots 29 



Duration; Annuals 30 



Biennials 31 



Perennials 32 



Aerial Roots 33 



Epiphytes or Air-plants 35 



Parasitic Plants, Green and Colored 36 



