56 



BOTHRENCHYM. 



[BOOK i. 



by the want of an inclosing membrane, and by their 

 brittleness when uncoiled. 



2. Fibres short, straight, and radiating, so as to form little 



starlike appearances, found by Purkinje in the lining 

 of the anthers of Poly gala Chamsebuxus, &c. (Plate I. 

 fig. 19.) 



3. Fibres originating in a circle, curving upwards into a sort 



of dome, and uniting at the summit, observed by the 

 same anatomist in the anthers of Veronica perfoliata, &c. 



4. Fibres standing in rows, each distinct from its neigh- 



bour, and having its point hooked, so that the whole has 

 some resemblance to the teeth of a currycomb, in the 

 anthers of Campanula; first noticed by Purkinje. (Plate I. 

 fig. 18.) 



5. Fibres forming distinct arches, as seen in the anthers of 



Linaria Cymbalaria, &c. by Purkinje. (Plate I. fig. 4.) 



SECT. II. Of Pitted Tissue, or Bothrenchym* 



fig-s. 



This, which has had a variety of names, (Tubes poreux, 

 Vaisseaux en chapelet, Tubes corpusculiferes, Vasiform Tis- 

 sue, Dotted Ducts,) consists of tubes, often of considerable 

 size, appearing when viewed by transmitted light as if riddled 



Boepos, a little pit. 



