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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