The jalap plant has slender herbaceous twining stems, with alternately placed heart-shaped pointed leaves and salver-shaped deep purplish-pink flowers.
Darwin's experiments in reference to the movements of climbing and twining plants, and of leaves in insectivorous plants, have opened up a wide field of inquiry as to the relation between plants and the various external factors, which has attracted numerous workers.
She was associated with Louisa Twining and Florence Nightingale; and in 1877-1878 raised the Turkish compassionate fund for the starving peasantry and fugitives in the Russo-Turkish War (for which she obtained the order of the Medjidieh, a solitary case of its conference on a woman).
Metamorphosis.It has already been pointed out that each kind of member of the body may present a variety of forms. For example, a stem may be a tree-trunk, or a twining stem, or a tendril, or a thorn, or a creeping rhizome, or a tuber; a leaf may be a green foliage-leaf, or a scale protecting a bud, or a tendril, or a pitcher, or a floral leaf, either sepal, petal, stamen or carpel (sporophyll); a root may be a fibrous root, or a swollen tap-root like that of the beet or the turnip. All these various forms are organs discharging some special function, and are examples of what Wolff called modification, and Goethe metamorphosis.
Thus any twining plant with a heart-shaped leaf, white and green above and purple beneath, is called by them guaco (R.
The design is an imitation of twining and interlaced branches, a marvel of delicacy and grace, and finer than anything of the kind to be found in Agra or Delhi.
The dodder is a genus (Cuscuta) of leafless parasites with slender thread-like twining stems. The flowers stand singly in the leaf-axils or form few or many flowered cymose inflorescences; the flowers are sometimes crowded into small heads.
Pharbitis hispida: hardy, 6 ft., various; the many-coloured twining Convolvulus major.