XVI 



TABLE OF CONTENTS. 



CHAPTER XVI. 

 Anomalous Thickening in Dicotyledons and G-ymnosperms. 



PAGE 

 567 

 567 



Sect. 180. General Observations. Eccentric Stems and Roots .... 



181. Synopsis of the Anomalies of Thickening 



182. Anomalous Distribution of Tissues with Normal Cambium. Senega- 

 root 569 



183. Climbing Bignoniaceas 57° 



184. Phytocrene 575 



185. Malpighiaceas, Apocyneae, Asclepiadeae, Celastrus, Tournefortia . S77 



186. Sieve-tubes in the Wood; Strychnos, Dicella 577 



187. Cambium inside the Ligneous Body: Tecoma radicans .... 580 

 Partial Cambiums and Woody Rings of the Sapindaceae . . . .581 



„ „ in the Calycantheas and Melastomese 584 



„ „ in the Rhizome of Rheum . . 585 



Successive renewed Zones of Thickening 586 



Chenopodiaces, Amarantacese, Nyctagineae, Mesembryanthema, Tetra- 



goniese 59° 



Anomalous Dilatation of the old Parenchyma. Intercalary Zones of 



Thickening in Stems of Lianes 601 



194. „ in Roots, Convolvulaceae, &c 606 



195. Cycadeae 608 



18 



189. 



190. 



191. 



192. 



193- 



196. Welwitschia 



614 



CHAPTER XVII. 



Secondary Thickening of the Stem and Boots of Monocotyledons 



and Cryptogams. 



Sect. 197. Stem of Dracajneas, Aloineae, and Beaucamea 618 



„ 198. Tubers of Dioscoreacese 622 



„ 199. Roots of Dracaeneae 622 



„ 200. Stem of Isoetes ... 623 



Index 625 



ERRATA. 



for Sanseviera read Sansevieria. 



P. 41, 1. Itfor Scheidei read Schiedei. 

 P. 41, 1. ^,for aculenta read aculeata. 

 In description of Fig. ^5, for purpurasceus read 

 purpurascens. 



P. 118, 1. 1 S J"' 



' "' ," j /i>?-Patschouli^ea!(? 



P. 95, description of Fig. 38 ) 

 P. 144, 1. 31, for Conocephalous read Conoce- 

 phalus. 



P. 185, 1. ^,for Haucomea «aif Hancomea. 



P. 228, 1. Ciifor Anselia rea^f Ansellia. 



P, 230, 1. 32, for Homalonema read Homalo- 



mena, 

 P. 248, 11. 38 and 4i,/(?»-Tladiantha read T:\i\a- 



diantha. 

 P- 253. 11- 32 and 34,>>- oi read fcom the. 

 P. 477, 1. ^,for Red Fir readBpxViCS. 

 P. 510, 1. 16, for Drybalanops read Dryoba- 



lanops. 



