3o8 GLOSSARY 



Awn. Beard of corn or grass. Applied to any similarly 



bristly appendage. 

 Axil (axilla = the arm-pit). The angle between the upper 

 side of a stem and any branch, branchlet, stalk, leaf, or 

 any other organ that grows from it. 

 Axillary. Vide Axis. 

 Axis (axis = axle-tree). The main stem around which, or 



from which, any branchlets and leaflets grow. 

 Bacca (noun). A berry, i.e. a succulent seed vessel, filled 



with pulp, in which the seed is encased. 

 Baccatus (adj.). Having a pulpy texture. 

 Bark. The rind, or covering, of the trunk and branches of 



an exogenous tree. 

 Basal. Growing at the base of anything. 

 Basal Sheath. The covering that encircles the base of pine 

 leaves. Also referred to as fascicle or bundle. Vide 

 Fascicle. 

 BicoLOR (bi = twice ; color = colour). Two-coloured. 

 Biennial (bis = twice, annus = year). Lasting two years. 

 Growing one year, flowering, fruiting, and then dying 

 the next year. 

 Bifid (bis = twice ; findere = to split) . Split sharply in two 



points. 

 Bin JE (bis = twice). Binae used to describe pine trees whose 

 leaves grow in twos in same basal sheath. Geminate 

 (twin), an expression used to denote the same condition, 

 i.e. two leaves growing in the same bundle, or basal sheath. 

 Bipinnate (bis = twice ; pinna = feather). When both the 

 primary and secondary divisions of a branchlet or leaflet 

 are pinnated, i.e. grow out like a feather (pinna) along 

 each side of this double edition of branchlets. 

 Blisters. Or resin pockets, formed just beneath the smooth 

 surface of the trunk before it becomes furrowed. Often 

 I in. or more long, and numerous. Found on Balsam 

 Firs, on A. Grandis, also sometimes on upper stems of 

 Douglas. 

 Boat-shaped. In the shape of a boat with keel in minia- 

 ture. Used in reference to shape of certain leaves of 

 the Cupressineae tribe. Vide Carinate, Keeled. 

 Boss (synonym Umbo [q. vide]). 



