GLOSSARY. 327 



The lesser divisions of a jUiform frond are called 

 ramulL 



These are often spine-like, hair-like, and bristle- 

 like: sometimes — 



Articulate, when jointed throughout. 



Accessory, when differing- from the ordinary 

 ramuli borne by the plant, and adapted for a 

 special purpose. 



Byssoid, arising in dense, slender cobwebby tufts. 



Corymbose, or level- topped, when the ramuli are of 

 different lengths, but do not overtop each other. 



Distichous, arising in two opposite rows. 



Imbricated, tiled, lapping over each other. 



Inarticulate, not jointed. 



Incurved, bent inwards. 



Involute, rolled inwards. 



Involucre, ramuli ranged round a conceptacle, form- 

 ing a more or less perfect whorl. 



Multifid, many-tipped. 



Pectinate, pointing one way, like the divisions of a 

 comb. 



