ANATOMY OF THE ROOTS OF PALMS. 489 
Fig. 46. Endodermis in longitudinal section. 
47. m in Kentia sp. (transverse section). 
48. Ze? showing local doubling (transverse section). 
49. Longitudinal section of vessel in Phenix sylvestris. 
50. Thyloses in vessel of Cocos flexuosa. ! 
51. SS ái Areca concinna. 
Figs. 52 & 53. Development of vessels in Kentia sp. (transverse section). 
Fig. 54. Xylem-bundle in Kentia sp. 
PLATE 50. 
Fig. 55. Transverse section of root of Jriartia sp. 
56. sr 5 Areca sp. 
DS, » 5 Kentia sp. 
58. S $ Dypsis madagascarensis. 
59. » j Kentia sp. 
€0. s "s Areca sp. 
61. ge h Cocos plumosa. 
62. ii T Cyrtostachys Renda. 
63. e » Dypsis madagascarensis. 
64. 5 a Licuala gracilis. 
65. j » Ptychosperma filifera. 
66. $ » Livistona australis. 
67. $$ P Sabal glaucescens. 
68. ge a Phenix dactylifera. 
69. h a Heterospathe elata. 
70. es ys Corypha umbraculifera. 
71. » i Raphia Hookeri. 
72. " » Latania Commersonii. 
73. is » Phoniz sylvestris. 
74. Pa » Sabal filamentosa. 
75. yr p Howea (Kentia) Forsteriana. 
76. » » Areca sp. (from Glasgow). 
Figs. 77-88. Diagrammatic representation of the method of formation of the normal cylinder in the 
roots of Palms. 
PLATE 51. 
Fig. 89. Junction of bundle of root with bundle of stem in Kentia sp. 
` Figs. 90-94. Progressive distal changes in the arrangement of vascular tissue in the root of Kenfia sp. 
95-98. Progressive changes in arrangement of vascular tissue in root of Kentia sp. 
Fig. 99. Section through base of stem of Latania borbonica, showing the lobed cylinders of the 
intracauline portions of the roots. 
100. A gap between two portions of the central cylinder in iniia sp., showing complete continuity 
of “ cortical” and “ medullary” parenchyma. 
101. Transverse section of base of root of Dictyosperma album. 
102. Dissections of central cylinder of Latania borbonica, showing lobed intracauline portion and 
normal extracauline portion. 
Figs. 103 & 104. Dissections of lobed extracauline roots of Kentia sp. 
