AND iTS DIFFERENT &INDS. 113 



Bot. L 1071, as well as to numerous beau- 

 tiful productions of the Cape of Good 

 Hope, 



7. Radio: articulata, or granulata. A Jointed 

 or Granulated Root agrees very much 

 with those described in the last section, 

 The Oxalis Acetoseila,V?ood Sorrel, Engl. 

 Bot. t. 762, and Saxifraga granulata, 

 White Saxifrage, t. 500, are instances of it. 

 The former has most affinity with scaly 

 bulbs, the latter with solid ones. 



It is evident that fleshy roots, whether of 

 a tuberous or bulbous nature, must, at all 

 times, powerfully resist drought. We have 

 already mentioned, p. 41, the acquisition of 

 a bulb in Phlenm pratense, Engl. Bot. 

 t. IO765 whenever that grass is situated in a 

 fluctuating soil, by which its vital powers are 

 supported while the fibrous roots are deprived 

 of their usual supplies. In this state it be- 

 comes the Phleum nodosum of authors; but 

 on bjing removed to a thoroughly wet soil, 

 it resumes the entirely fibrous root, and luxu- 

 riant growth, of PA. pratense. I have also 

 found Alopecurus geniculates, t. 1250, (an 



1 



