--Abortion of cotyledons-
-Circumnutation of hypocotyls and epicotyls whilst still buried and arched-
-Their power of straightening themselves--Bursting of the seed-coats--
Inherited effect of the arching process in hypogean hypocotyls--
Circumnutation of hypocotyls and epicotyls when erect--Circumnutation of
cotyledons--Pulvini or joints of cotyledons, duration of their activity,
rudimentary in Oxalis corniculata, their development--Sensitiveness of
cotyledons to light and consequent disturbance of their periodic movements-
-Sensitiveness of cotyledons to contact.
THE circumnutating movements of the several parts or organs of a
considerable number of seedling plants have been described in the last
chapter. A list is here appended of the Families, Cohorts, Sub-classes,
etc., to which they belong, arranged and numbered according to the
classification adopted by Hooker.* Any one who will consider this list will
see that the young plants selected for observation, fairly represent the
whole vegetable series excepting the lowest cryptogams, and the movements
of some of the latter when mature will hereafter be described.
Pages:
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132