L.M.B.C. MEMOIRS. 



No, IX. CHONDBUS. 



BY 



Otto V. Darbi shire, 

 Owens College, Manchester. 



Contents, 



PAGE 



I. Introduction 2 



Introductory remarks. The collection of material and 

 its preparation for the herbarium and the microscope. 



II. Chondrus crispus (L.) Stackh 7 



A. External morphology of the vegetative organs 7 



B. Anatomy and histology of the vegetative organs 10 



1. Anatomy of the shoot 10 



2. Anatomy of the root 15 



3. Histology of the shoot IG 



4 . Histology of the root 20 



C . Physiology of the vegetative organs 20 



D. The reproductive organs 22 



1. The nemathecium 23 



2. The spermophore 2G 



3. The carpophore 27 



E. Ecology 29 



III. Concluding Eemahks 34 



General summary 35 



Conclusion 37 



Description of the Plates ...:.,; 3'J 



B 



