Yucca gloriosa, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 75

2. Y. gloriosa L. , Sp. Pl. 319 (1753) .

Shrub; stem 50-120(-200) cm, usually branched in older plants. Leaves 50-100x5-8 cm, very rigid and with strong, pungent apex, dark green, with reddishbrown margins which are remotely denticulate in young leaves but usually entire at maturity. Peduncle 50-100 cm, with several bract-like leaves. Panicle 100-150 cm; branches patent to ascending. Flowers white, usually tinged with purplish-red; perianth-segments 40-60 mm. Fruit dry but indéhiscent, with 6 prominent ribs. Naturalized on sand-dunes and waste ground in N. & C. Italy. [It.] (S.E. United States.)

Y. aloifolìa L. , Sp. Pl. 319 (1753), also from the S.E. United States, which is like 2 but with taller and usually simple stem, narrower leaves with whitish, denticulate margins, shorter peduncle and succulent fruit, has been recorded as a garden escape from several parts of Italy, but does not appear to be fully naturalized.