fea pe a — ita vlna! RUA RS pe A oT ec ee Oe, a ae ee yo wil ee Oe em MR BU Re dpe Sai PAST) |, be A Sele as | lle en Ro T A ere E oa) oe, So 
oe, Ee ee | ae 
et Pe Ae ee 
14s dye ra 
Be np ee eee, 
Fa 
a 
EXPLANATION OF PLATES 55 
Fic. 64. Cross section of root tip about 1 mm. above FIG. 63. Parts lettered 
Wein FE- OF. X 7O 
IG. 65. A part of a longitudinal section of a root tip showing the beginning of 
raphide cells, R. 
Fic. 66. Cross section of a five-rayed stele. X 60. 
Fic. 67. Longitudinal section of a root, showing regional divisions and young 
raphide cells, R. A 
FIG. 6 Longitudinal section of a mature, contracted root, showing the folding 
and twisting of the stele after sectioning. The cells of the sheath, B, show no dis- 
tortion. 
Fic. 69. Mature corm, showing root system and two buds, B, which 
have formed leaves while aes to the parent plant. X l4. 
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