This is an ornamental genus of plants, mostly natives ot the southern States and South America. Some of them succeed well in the open ground in the northern States, and form a pleasing contrast with other plants, on account of the peculiarity of their foliage, which resembles the palm, or aloe. The leaves are sharp-pointed, stiff, and rigid; and, in some of the species, the edges of the leaf are margined with long threads.

Yucca filimentosa, or Adam's Thread, is one of the most hardy sorts. It is called Thready Yucca, from the long threads that hang from the leaves. The flower-stem grows to the height of five or six feet, and nearly the whole of it is covered with large, bell-shaped, white flowers, sitting close; all the species are rather shy flowerers; in August and September.

Y. gloriosa and superba are two splendid species, producing an immense number of their fine bell-flowers on their tall stems. The foliage of all the species is evergreen, and they closely resemble each other. The severity of our winters often blackens the foliage; to prevent this, the leaves should be gathered up and tied together, and covered with straw, Propagated from suckers.