586 



DR. J. B. HICKS ON THE GONIDIA AND 



Phases in the life of a Moss. 



Intermediate conditions. Results. 



f Confervoid filaments Confervoid filaments. 



So-called 

 ( Protonema Confervoid filaments. 



Confervoid filaments \ Gongrosira 



Chroolepus 



Spore . . <( 



Confervoid filaments 



Confervoid filaments 



J Chlorococcus. 

 \ Gloeocapsa. 



f Chlorococcus. 

 I Gloeocapsa. 



Confervoid filaments 

 Radicles, stem, leaves 

 Antheridia, archegonium 



( Confervoid filaments. 



Confervoid filaments, with zoospores. 



j Chlorococcus ] „ 

 . < r<-i t irom anv part. 



I Gloeocapsa J - '^ 



Confervoid filaments, from any part, 



j P-i L °^ variable forms of growth . 



I Confervoid filaments. 



I Oospore "j Spore. i Prothallium. 



l^ Sporange I Confervoid filaments \ Sporange. 



I [ Spore. 



EXPLANATION OP THE PLATES. 

 Plate LVII. 



Fig. 5. 

 Fig. 6. 

 Fig. 7. 



Fig. 8. 

 Fig. 9, 



a. Moss-plant, with confervoid filaments. 



b. Confervoid filaments, one assuming the radicular type. 



Growing extremity of confervoid filament, showing the different stages towards the formation of 



branches. 

 Branching filament in active growth. 

 Branching filament (enlarged) growing under stimulus of heat and moisture, producing — 



a. The " peculiar fruit" (compound gonidium) or gemma. 



b. b, b. Terminal cells of a linear form, given off plentifully ; some of the cells tapering 



almost to cilia. 



c. A detached cell, giving off a branch. 



Branching filament, with gemmae, showing another variety of growth. 



Tapering end of filaments, the result of very rapid growth. 



Branching filaments of nearly equal length, giving a velvety appearance to the surface on which 



they grow. The commencement of the red tinge visible in the cell-w alls. 

 Condition intermediate between confervoid filaments and radicles. 

 Peculiar mode of growth of filament in water, approaching Draparnaldia tenuis [Stiyeocluidam 



lenue, Kiitzing). 



