GLOSSARY. 



Acaulescent. Apparently stemless. 

 Accumbent. Edges of cotyledon folded against radicle. 

 Achene. A dry 1-celled, 1-seeded fruit with tight-fitting pericarp. 

 Acicular. Needle-shaped. 

 Acuminate. Long-tapering at the end. 

 Acute. Sharp-pointed at the end, but not tapering. 

 Adnate. Attached. 



Adventive. Not native and but imperfectly naturalized. 

 Alate. Winged. 



Albumen. Nutritive material around the embryo of a seed. 

 Alliaceous. Onion-like. 

 Alternate. Not opposite. 



Ament. A dense, usually elongated, cluster of imperfect bracted flowers. 

 Amphitropous. When the ovule is partly inverted. 

 Amplexicaul. Clasping the stem. 

 Anastomosing. Forming a net-work. 



Anatropous. Ovule inverted so that the micropyle is close to the hilum. 

 -androus. In composition, stamens. 

 Angiospermous. Seeds borne within a pericarp. 



Annual. A plant of one year's duration. Winter Annual when the seed ger- 

 minates in the fall and the plant matures the following season. 

 Annular. King-shaped. 



Anther. The upper portion of the stamen containing the pollen. 

 Antherid. The male reproductive organ in the higher cryptogams. 

 Apetalous. Without petals. 

 Apical. Situated at the apex. 

 Apiculate. Ending in a minute tip. 

 Appressed. Lying close against. 

 Aquatic. Growing in water. 

 Arachnoid. Cobwebby. 

 Arborescent. Tree-like. 



Archegone. The female reproductive organ in the higher cryptogams. 

 Areolate. Surface divided into small spaces by veinlets. 

 Aril. A seed appendage growing near the hilum. 

 Arillate. Having an aril. 

 Aristate. Tipped by an awn or bristle. 

 Aristulate. Diminutive of aristate. 

 Articulate. Jointed. 

 Ascending. Rising obliquely. 

 Attenuate. Becoming very slender. 

 Auricle. An ear-shaped appendage. 

 Auricled. Possessing auricles. 

 Awn. A slender bristle-shaped appendage. 

 Axil. The angle formed where a leaf or branch unites with the stem. 



235 



