GLOSSARY 



Abaxial, the side of a lateral organ 

 away from the axis. 



AcHENE, see Akene. 



AcROPETAL, applied to structures that 

 are produced in succession toward the 

 apex. 



AcTiNOMORPHic, (of flower) arrange- 

 ment of floral parts in a regular pat- 

 tern capable of bisection into similar 

 halves in two or more planes. 



Acuminate, with a tapering end. 



Adaxial, the side of a lateral organ 

 next the axis. 



Adnate, united, as an inferior ovary 

 with the calyx tube. 



Adventitious, (of roots) those that 

 arise from any structure other than a 

 root ; (of buds) those that arise other 

 than as terminal or axillary struc- 

 tures. 



Aggregate fruit, a collection of the 

 separate carpels of one flower, i.e., 

 raspberry. 



Akene, a small, dry, hard, one-celled, 

 one-seeded, indehiscent fruit consist- 

 ing of one carpel (buttercup), or more 

 than one with adnate calyx (com- 

 posites). 



Amphicribral, (of bundles) with the 

 phloem completely surrounding the 

 xylem. 



Amphiphloic, (of steles) with the 

 phloem outside of and also centrad 

 to the xylem cylinder. 



Amphitropous, see Hemitropous. 



Amphivasal, (of bundles) with the 



Anatropous, (of ovules) one in which 

 the nucellus is inverted and straight, 

 with the micropyle adjacent to the 

 hilum. 



Androecium, the stamens considered 

 collectively. 



Anisocarpic, (of flowers) with the num- 

 ber of carpels less than the number 

 of parts in the other floral sets. 



Ani^ual, with a life cycle of one year's 

 duration. 



Annular, (of conductive elements) 

 with secondary wall thickenings in 

 the form of rings. 



Anterior, placed in the front; remote 

 from the axis of an inflorescence. 



Anther, the portion of the stamen con- 

 taining the pollen, usually bilocular. 



Anthesis, the time of floral expansion. 



Anticlinal, at right angles to the 

 surface; (of walls) those which cut 

 the surface or periclinal walls at right 

 angles. 



Antipodal, (cells or nuclei) those 

 which occupy the chalazal end of the 

 megagametophyte. 



Apet ALDUS, without petals. 



Apical, at the point or summit of a 

 structure. 



Archesporium, the cell or cells from 

 which wall tissue, if any, and the 

 sporogenous tissue are derived in 

 the micro- or megasporangium. 



Atropous, see Orthotropous . 



Auriculate, possessing ear-shaped ap- 

 pendages (auricles). 



xylem completely surrounding the Awn, a bristle-shaped appendage, as on 

 phloem. the glumes of many grasses. 



Anastomosis, union of one vein or Axil, the angle subtended by the stem 

 bundle with another. axis and a leaf or branch. 



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