GLOSSARY FOE VOL. I. 



Acuminate. Terminating in a long taper point. 



Adnate. Growing to, or attached throughout the Avhole length. 



Alternate. When the pinn» are not opposite each other, they are said 



to be alternate. 

 Amorphotis. When a part or the whole of the disc of the frond is 



altered in texture, and closely occupied by the sporangia. When 



the form is indistinct. 

 Anastomosiyig. When all the apices of the veins are joined together 



with another vein; or the veins re-unite, they are said to anastomose. 

 Apex. The extreme end. 

 Apices. The plural of apex. 

 Appressed. Pressed together. Where a part lies close to another 



throughout its whole length. 

 Approximate. Near to, but not united. 

 Articulated. Jointed. 



Attenuated. Becoming narrower towards either extremity. 

 Aiiriculate. Eared. 

 Axil. The upper angle formed by the attachment of a leaf or branch 



to its support. 

 Axillary. If the receptacle is on the point of the forking of the venules, 



it is axillary. 

 Barren. Fronds without fructification. 

 Bifid. Divided into two. 

 Binate. Where a leaf is composed of two leaflets placed at the end 



of a common petiole, or where a simple leaf is nearly divided into 



two equal parts. 

 Bipartile. Deeply divided into two parts. 

 Bipinnate. Twice-divided leaves. Where the leaflets on tlie secondary 



petioles of a doubly compound leaf are arranged in a pinnate 



manner, the secondary petioles themselves being similarly placed 



on the primary. 

 Biserial. In two rows. 



VOL. I. 2 C 



