B, C, D, E, enlarged.) branched rootstock from which spring slender aerial shoots which are green, ribbed, and bear at each node a whorl of leaves reduced to a toothed sheath.
Long, elliptic-ovate, doubly toothed, pointed, numerously ribbed, hairy below and opaque, and not glossy as in the beech, have short stalks and when young are plaited.
In 1718 Sir Thomas and John Lombe set up an improved silkthrowing machine at Derby, and in 1758 Jedediah Strutt introduced a machine for making ribbed stockings, which became famous as the "Derby rib."
Well ribbed up, short and compact in proportion.
The most common are the Natal lily with pink and white ribbed bells, the fire-lily, with flame-coloured blossoms, ixias, gladiolas, the Ifafa lily, with fuchsia-like clusters, and the arum lily.
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