I. Hookeri is a free-flowering perennial, with pointed lanceolate
leaves, of a delicate texture, bright green, and very finely toothed.
The flowers, which are sweet-scented, are not so large as those of I.
glandulosa, and are produced singly, the ray florets being, however,
much more numerous, rarely numbering less than thirty. It is found in
abundance in rocky places in Sikkim, where it replaces the nearly allied
I. grandiflora, a dwarfer species, with much shorter, shining leaves;
both are very desirable plants either for rockery or flower border work.
The Elecampane (I. Helenium) is an imposing, robust-growing species,
having large, broad leaves a foot or more in length. It grows from four
feet to five feet in height, and its thick, shaggy branches are crowned
with large yellow flowers. For isolating in woods this plant, is very
useful, and with the exception of Telekia cordifolia, it would be hard
to find a rival to it. It is, I believe, pretty extensively used for
planting in shrubberies, but unless they are thin and open it is seldom
seen to advantage.
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