CONTENTS 



Chapter Page 



I. Introduction 1 



II. An Essay on Nomenclature 6 



III. Kingdom Mychota 12 



Phylum Archezoa 17 



Class 1. Schizophyta 18 



Order 1. Schizosporea 18 



Order 2. Actinomycetalea 24 



Order 3. Caulobacterialea 25 



Class 2. Myxoschizomycetes 27 



Order 1. Myxobactralea 27 



Order 2. Spirochaetalea 28 



Class 3. Archiplastidea 29 



Order 1. Rhodobacteria 31 



Order 2. Sphaerotilalea 33 



Order 3. Coccogonea 33 



Order 4. Gloiophycea 33 



IV. Kingdom Protoctista 37 



V. Phylum Rhodophyta 40 



Class 1. Bangialea 41 



Order Bangiacea 41 



Class 2. Heterocarpea 44 



Order 1. Cryptospermea 47 



Order 2. Sphaerococcoidea 47 



Order 3. Gelidialea 49 



Order 4. Furccllariea 50 



Order 5. Coeloblastea 51 



Order 6. Floridea 51 



VI. Phylum Phaeophyta 53 



Class 1. Heterokonta 55 



Order 1. Ochromonadalea 57 



Order 2. Silicoflagellata 61 



Order 3. Vaucheriacea 63 



Order 4. Choanoflagellata 67 



Order 5. Hyphochytrialea 69 



Class 2. Bacillariacea 69 



Order 1. Disciformia 73 



Order 2. Diatomea 74 



Class 3. Oomycetes 76 



Order 1. Saprolegnina 77 



Order 2. Peronosporina 80 



Order 3. Lagenidialea 81 



Class 4. Melanophycea 82 



Order 1 . Phaeozoosporea 86 



Order 2. Sphacelarialea 86 



Order 3. Dictyotea 86 



Order 4. Sporochnoidea 87 



V ly 



