GLOSSARY 



Abor'tion. The imperfect or non-development of an organ. 



Acaules'cent. Without an obvious aerial stem. 



Achene' (akene). A small, dry, one-celled indehiscent fruit in which the seed 



coat and pericarp (fruit wall) are not firmly attached. 

 Achlamy'deous. Destitute of calyx and corolla. 



Acic'ular. Applied to crystals of calcium oxalate, etc. that are slenderly needle- 

 Shaped. 



Acrop'etal. Development from outside (below) toward the inside (above). 

 Acu'minate. Tapering gradually to a long point. 

 Acute'. Sharp-pointed, the point being less than a right angle. 

 Ad'nate. Applied to the growing together of unlike parts. 

 Adventi'tious. Applied to roots and buds that are out of their ordinary position. 

 Aestiva'tion. Arrangement of the parts of the flower in the bud. 

 Albu'men. Nutritive material stored in the embryo, endosperm, or perisperm. 

 Al'ternate. Applied to leaves, buds, etc. that are arranged singly (one after 



another) at the nodes. 

 Albur'num. Sap wood. 



Am'ent. A scaly spike-like inflorescence. Another name for catkin. 

 Amor'phous. Without definite shape. 

 Amphit'ropous (ovules and seeds). Half-inverted and straight, with the 



hilum about the middle, and micropyle terminal. 

 Amplex'icaul. Clasping the stem. 

 Anal'ogy. Resemblance in function. 

 Anastomo'sing. Applied to veins that are connected with others by cross veins, 



so forming a network, as with the marginal veins of Eucalyptus. 

 Anat'ropous. Inverted ovules or seeds with micropyle adjacent to hilum. 

 Androe'cium. The male system of organs in a flower. 

 Androg'ynous. Applied to inflorescences composed of both staminate and 



pistillate flowers. 



Anemophi'lous. Wind pollinated. 

 Angiospenn'ous. Having ovules and seeds borne within a box-like covering, 



the pericarp. 

 An'nual. Producing flowers, fruit and seed within a year from the time the 



seed germinated and then dying completely. 

 An'nular. Ring-like. 

 Ante'rior. The front region. 



An'ther. That portion of a stamen which bears, the pollen. 

 An'theridium. Male sexual organ of Thallophytes, Bryophytes and Pterido- 



phytes. 



412 



