TABLE OF CONTENTS 



I. INTRODUCTION 



II. MORPHOLOGICAL NOTES ON THE GENUS 

 I. Epidermis and Epidermal Pores 

 Compact Ventral Tissue 

 Ventral Scales 

 Rhizoids 

 Receptacles . 

 Sporophyte 

 Cupules . 



III. DESCRIPTION OF SPECIES 



Section I. Astromarchantia 



1. AI. polymorpha L. , 



2. M. plicata Nees & IMont. 



3. M. Berteroana Lehm. & Lindenb. 



Section II. Chlamidium 



4. M. paleacea Bertol. 



5. M. hreviloha Evans 



6. M. domingensis Lehm. & Lindenb. 



7. M. papillata Raddi 



8. M. Bescherellei Steph. 



9. M. chenopoda L. ... 



Doubtful Species 



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