GLOSSARY OF BOTANICAL TERMS 



Abortive {aboriiviis). Imperfectly developed. 



Accrescent (accrescens) . Increasing in size with age. 



AccuMBENT {accumbens) . Placed along the edge, especially of the cotyledons. 



AcHENE {achaenium). A dry and indLehiscent fruit, expecially one with a thin pericarp. 



Acuminate [acuminatus). Narrowed at the top and drawn out into a point. 



Acute {acutus). Sharply pointed, but not drawn out. 



Adelphous {adelphus). United in bundles, e.g., diadelphous = united in two bundles. 



Adherent [adhaerens). Slightly united to an organ of another kind, usually to a part 



of another whorl. 

 Adnate {adnatus). Closely united with an organ of another kind, usually with a part 



of another whorl. Adnate anthers have their halves attached through their whole 



length to the filament. 

 Aerial [aheus). Growing above the surface of the earth or water. 

 Aestivation (aestivatio). Praefloration, i.e., the arrangement of the perianth-leaves in 



the bud. 

 Albumen {albumen). The nutritive tissue (endosperm or perisperm) in which the embryo is 



more or less immersed. 

 Alternate {alternus). Placed between two parts ; or inserted one on each node. 

 Androgynous {androgy^tus). Containing both male and female flowers. 

 Androphore {androphorum) . An elongation of the receptacle below the stamens. 

 Annual {annuus). Terminating its whole cycle of hfe within one year. 

 Annular {annularis). Ring-shaped. 

 Anterior {anticus). Placed in front ; or turned away from the axis upon which the 



organ is inserted. 

 Anther {anthera). The thickened upper part of the stamen, which encloses the pollen. 



It usuallv consists of two halves (cells) containing two pollen-sacs each and opening 



by a conmion slit or pore. 

 Appressed {appressus). Pressed close. 

 Areole {areola). A space marked out on a surface. 

 Aril {arillus). An expansion of the funicle or the adjoining part of the testa, more or less 



enveloping the seed. 

 Ascending {ascendens). Directed upwards. An ascending stem is more or less prostrate 



at the base, then erect ; an ascending ovule is attached somewhat above the base. 

 Asymmetrical {asymmetricus). Which cannot be divided into two or more similar parts. 

 Auricle {auriculus). An earlet, i.e., a small roundish lateral appendage of a leaf or leaf- 

 like organ. 

 Awn {arista). A strong bristle-hke appendage. 



Axil {axilla). The upper angle between a leaf and the stem from which it springs. 

 Axile {axilis). Placed in the axis. 

 Axillary {axillaris). Placed in the axil of a leaf. 

 Axis {axis). The line round which an organ is developed ; or the part of the plant on. 



which other parts are attached, especially the stem. 



Baccate {baccatus). Berry-like. 



Barbed {qlochidiatus) . Beset with hairs or spines directed backwards. 



Basifixed {basifixus). Attached by the bottom. 



