Forms of Roots 



33 



Orchis Mario (fig. 57), the term tuberculated is employed; 

 whilst if the tuber is divided so as somewhat to resemble the 



Fig. 59. — Tuberous fasciculated 

 root of the Dahlia. 



Fig. 60. — Nodulose root of 

 SpinEafilipendida. 



fingers of a hand outstretched, as in 

 Orchis odoratissima (fig. 58), it is 

 called palmate. 



The term fasciculated, or tufted, 

 is used where there are a number of 

 tubercles or fleshy branches arranged 

 in a bunch, as in the Dahlia (fig. 59). 



When the fibres are enlarged 

 only at their extremities, as in the 

 Dropwort (fig. 60), the root is no- 

 dulose, or knotted ; whilst if there 

 be several swellings arranged like 

 beads on a necklace, as in Pelar- 

 gonium triste, it is said to be monili- 

 forai, or necklace-shaped. 



In Ipecacuanha the root is called annulated, it being marked 

 with several ring-like expansions upon its surface. 



Fig. 61. — n, a piece of branch of an 

 Apple tree cut through length- 

 wise, into which a > oung Mistle- 

 toe plant, 7n, has driven its suck- 

 ing roots, s. 



