TABLE OF CONTENTS 



I. INTRODUCTION 



II. ^lORPHOLOGICAL 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. M. polymorpha L. 



2. M. plicata Nees & Mont. 



3. M. Berteroana Lehm. &: Lindenb. 



Section II. Chlamidium 



4. M. paleacea Bertol. 

 M. breviloba Evans 

 M. domingensis Lehm. & Lindenb. 

 M. papillata Raddi 

 M. Bescherellei Steph. 

 M. chenopoda L, ... 



Doubtful Species 



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