GLOSSARY 153 



Disk. The same as sucker, for tendrils. 



Dissected. Divided into numerous narrow lobes. 



Divergent. The same as spreading. 



Division. One of the main groups under which plants are 

 classified; often called phylum. For the higher plants, 

 the names of divisions 1 end in phyta. 



Dotted. As here used, referring to the presence of lighter or 

 darker spots or of rather regularly and closely placed 

 blackened hairs or glands, usually on the under side of 

 a leaf. 



Double. With more than the normal number of petals, as 

 applied to flowers. Double poinsettias have their bracts 

 increased: double hydrangeas, their neutral flowers. 



Downy. Pubescent, with the hairs short, soft and spreading. 



Drooping. Hanging from the base so as to suggest wilting, 

 like the leaves of peach and sweet cherry. 



Drupe. A "stone-fruit" typically with the outer part succulent 

 and one hard kernel (plum) : but the flesh may be thin 

 and dry (almond), or may contain several stones (holly). 

 In a huckleberry the stones are small and seed-like, but 

 their presence is shown by the crackling sound when they 

 are broken between the teeth, quite different from the 

 behavior of a blueberry. 



Drupelet. A diminutive drupe. 



Ducts or vessels. The water-passages in wood: appearing as 

 pores in cross-section. When larger or crowded in the 

 spring-growth, they make the wood "ring-porous" (oak) ; 

 when uniform in size and disposition, they render it "dif- 

 f used-porous" (walnut). The smaller ducts are often 

 arranged in flame-like radiating patterns (oak), or wavy 

 tangential patterns (elm). 



Dull. Not glossy; not brightly colored. 



Ellipsoid. Shaped like a foot-ball, as applied to fruits, etc. 



Emergence. An outgrowth from a leaf or stem not readily 

 classified under the usual subdivisions of such parts 

 (prickles). 



