Glossary 
Axor’TION.—The imperfect or non-development of an organ. 
ACAULES’CENT.—Without an obvious aerial stem. 
Acuene’ (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 needle-shaped. 
Acips (Plant Acids).—A widely diverse group of cell constituents having the prop- 
erty of uniting with radicals to form salts or esters. 
Acrop’ETAL.—Development from outside (below) toward the inside (above). 
Actinomor’pHic.—Applied to flowers like those of the Mustard, etc. which are 
capable of division into equal halves in more than one direction. Cf. 
zygomorphic. 
Acu’mInATE.—Tapering gradually to a long point. 
Acutr’.—Sharp-pointed, the point being less than a right angle. 
Ap’NATE.—Applied to the growing together of unlike parts. 
Apventi’T10us.—Applied to roots and buds that are out of their ordinary position. 
Arstiva't10on.—Arrangement of the parts of the flower in the bud. 
A.su’men.—Nutritive material stored in the embryo, endosperm, or perisperm. 
ALBuUR’NUM.—Sapwood. 
ALEU’RONE.—Applied to small protein bodies in which are usually embedded one 
or more crystalloids, one or more globoids and at times a small rosette of cal- 
cium oxalate. 
ALKALoIs.—Nitrogenous organic bases. 
ALLELO’MORPHS.—Alternative forms of a gene which are located at the same point 
on each one of a pair of chromosomes. 
AL'TERNATE.—Applied to leaves, buds, etc., that are arranged singly (one after 
another) at the nodes. 
Am’ent.—A scaly, spike-like inflorescence. Another name for catkin. 
Amor’pHous.—Without definite shape. 
Ampuit’Ropous (ovules and seeds).—Half-inverted and straight, with the hilum 
about the middle, and micropyle terminal. 
AmpLex’/ICAUL.—Clasping the stem. 
ANAL'ocy.—Resemblance in function. 
Anastomo’sinc.—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. 
Apre’crum.— The male system of organs in a flower. 
Anproa’ynous.—Applied to inflorescences composed of both staminate and 
pistillate flowers. 
i’Lous.—Wind pollinated. 
ce as arewas sein ovules and seeds borne within a box-like covering, the 
se 71 
