GLOSSARY OF BOTANICAL TERMS. 



Abnormal. — Differing from the usual structure. 



Abortion. — Imperfect development or non-development of an organ. 



Abortive. — Imperfectly developed or rudimentary. 



Acuminate. — Tapering at the end. 



Acute. — Forming a sharp angle. 



Adhesion. — The union of members of different floral whorls. 



Adnate. — Grown together. 



Adventitious. — Occurring out of the regular order. 



Estivation. — The arrangement of floral organs in the bud. 



Akene. — A small, dry, hard, one-celled, one-seeded, indehiscent fruit. 



Albumen. — A name applied to the food store laid up outside the embryo in 



many seeds ; also nitrogenous organic matter found in animals and 



plants. 

 Alburnum. — Sap wood. 

 Alternate. — Applied to that form of leaf arrangement in which only one 



leaf occurs at a node. 

 Ament.— A scaly spike or catkin. 



Angiosperms. — Those plants which bear their seeds within a pericarp. 

 Anther. — That part of the stamen which bears the pollen. 

 Apetalgus. — Having no petals. 

 Appressed. — Lying close and flat against. 

 Arborescent. — A tree in size and habit of growth. 

 Aril. — The exterior coat of some seeds. 



AwL-SHAPED. — Narrowed upward from the base to a slender or rigid point. 

 Axil. — The upper one of the two angles formed by the juncture of the leaf 



with the stem. 

 Axillary. — Situated in an axil. 



Bast. — A name applied to the inner layer of the bark. 

 Beaked. — Ending in a prolonged tip. 

 Berry. — A fruit whose entire pericarp is succulent. 

 Bi-PINNATE. — Applied to a leaf which is twice compounded on the pinnate 



plan. 

 Bractlets. — The smaller bracts borne on pedicels. 

 Bracts. — The modified leaves borne on flower peduncles or at the base of 



flower stems. 



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