438 GLOSSARY. 



Interruptedly pinnate. When smaller leafets are interposed 



among the principal ones. 

 Involucre or Involucrum. A sort of general calyx serving for 



many flowers; generally situated at the base of an umbel, 



or head; as in Conium maculatum. Med. Bot. PI. 11, and 



Cornusflorida, PI. 28. Also the Indusium. 

 Involucel. A partial involucre. 

 Irregular corolla. Having its upper and lower sides unlike. 



K. 

 Keel. The under petal of a papilionaceous flower. Also the 



lower side of the midrib of a leaf. 

 Keeled, Shaped like a keel. 

 Kernel. The nucleus or seed of a nut. 

 Kidney-shaped. Heart shaped without the point, and broader 



than long. 



L. 



Labiate. Having an upper and lower lip, as in flowers of the 



class. Didynamia. 

 Laciniate. Cut, torn and jagged. 



Lactescent. Yielding a white, or milkly juice, when wounded. 

 Lacunose. Having pits or depressions, 

 Lamellated. In thin plates. 

 Lamina. The border or flat end of a petal, in distinction from 



its claw. Also a thin layer, plate or membrane of any kind. 

 Lanate. Woolly. 

 Lanceolate. Spear shaped. Narrow, with both ends acute, as 



in the leaves of Erythroniam Americanum, Med. Bot. 



PI. 58. 

 Lanuginous. Woolly. 

 Lateral. At the side. 



Leafet. A partial leaf. A constituent of a compound leaf. 

 Legume. A pod or seed vessel having its seeds attached to one 



side or suture ; commonly of a long form and not jointed. 

 Leguminous. Bearing legumes. 

 Lenticels. The spots upon cuticle of young twigs. 

 Lenticular. Shaped like a convex lens. 



