144 FiKLi) Manual 



Internodo. The part oi a stciii between two successive nodes. 



Introrse. Placing inwards. 



hnolucre. .V whorl of bracts subtending a tlower or flower 



cluster. 

 Involute. Rolled inwardly. 

 Irregular. A flower with one or more organs of a set unlfke 



the others. 

 Isobilateral. .\ flower or organ which can be cut into equal 



lialves by two planes, the halves of the one being unlike 



those of the other. 



Lanceolate. Lance-shaped. 



Lateral bud. An axillary l)ud, any bud not the terminal bud 



of a branch. 

 Latex. The milky sap of certain plants. 

 Leaflet. One of the divisions of a compound leaf. 

 Leaf star. The scar or cicatrix formed w^here the i)etiole of 



a leaf separates from the stem or twig. 

 Legume. A sim])le, dry fruit dehiscent along both sutures. 

 Lenticel. A small usually oval or rounded spot on the bark 



of a twig or stem, produced by a special tissue of cells 



under a stoma and breaking" through the epidermis. 

 Limb. I'he expanded part of a petal, sepal, or sympetalous 



corolla. 

 Linear. A long and narrow organ with the sides nearly 



parallel. 

 Lobed. Divided to about the middle or less. 

 Loculicidal. .^ capsule which splits longitudinally through the 



middle of the back of each cavit>- or c<)m])onent carpel. 



Medullary rays. Strips of cells passing radially through the 



wood from the pith or annual rings to the bark. 

 Megaspore. The larger of the two kinds of nonsexual spores 



produced in the flower. The megaspore develops into 



the female gametophyte. 

 Megasporangium. A sporangium which produces megaspores ; 



the ovule in seed plants. 

 Membranous. Thin and rather soft and pliable. 

 >fesophyte. .\ land plant adapted to ordinary conditions of 



moisture. 



