328 GLOSSARY OF TERMS. 



Lanceolate Oval, but pointed at both ends, like a lance head. 



Leaflet The parts of a compound leaf when they are divided 

 down to the midrib or rachis. 



Legume A fruit consisting of a single carpel, which opens on one 

 side only, corresponding to the margin of the carpellary leaf. 



Lenticels Corky developments of the stomata or breathing 

 pores of the bark. 



Lenticular Shaped like a lens, as in the Lentil. 



Lichen A group of cryptogamic plants growing on rocks and 

 trees, usually greyish or yellowish, without distinction of 

 stem and leaf, but variously branched. The fructification 

 forms a small disc, usually brown or blackish on the surface, 

 or black points, dots, or lines. 



Llgulate Strap-shaped. 



Lyrate Applied to pinnatifid leaves in which the terminal lobe 

 is larger than the others and rounded. 



Medullary rays Slender lines of soft tissue that connect the 

 pith with the bark ; usually paler than the wood, as seen in 

 a transverse section of the wood. 



Micropyle The minute opening of the seed through which the 

 radicle of the embryo pushes out. In the Bean it can be 

 seen near the hilum. 



Moss Minute plants with green leaves with or without a single 

 vein, or a forked vein, and bearing stalked or stalkless 

 capsules, usually opening transversely, containing spores, 

 and often furnished with teeth. 



Mucronate Furnished with a short sharp point at the apex. 



Muller-shaped Shortly cylindrical with one end flat and the 

 opposite one rounded, like a muller. 



Multicellular Hairs, or fruits, composed of many cells. 



Mycelium The loose thread-like mass forming the plant of 

 fungi. In the Mushroom it is loose and cottony, and known 

 as mushroom spawn ; in Ergot it is compacted into a hard 

 mass known as a sclerotium. 



Node The point of the stem whence the leaves arise. 



Nucleus sheath The line in endogenous roots which separates 

 the outer ring from the central portion. 



Nut A fruit originally composed of three carpels, which ulti- 

 mately becomes one-celled, and contains one seed, as in the 

 Cocoa Nut and Hazel Nut. In the young state the three 

 carpels are indicated by the presence of three stigmas. 



Oblanceolate Lanceolate, but wider at the upper end. As a 

 rule the prefix ob means the reverse shape. 



Obovate Ovate reversed. 



