CHAP* CXVll.

HALF-HARDY MONOCOTYLEDO'nEJE.

252 7

described by Pursh, from the specimen in Nuttall’s herbarium. Closelyresembling Y. filamentosa. Introduced in 1811.

m. 9. Y. fla'ccida Haw. The flaccid -leaved Yucca.

Identification . Haw. Supp., p. 35 .; Lind!, in Bot. Reg., vol.xxii., under Y. dracdnis.

Engravings. Bot. Reg.; and our fig. 2399.

Spec. Char., Sfc. Leaves all very flaccid, weak,bent below the middle and recurved, very longand lanceolate, flat, concave and mucronulateat the apex, roughish; marginal filamentsstrong, yellowish. (Haworth Suppl., p. 35.)“ A pretty and apparently distinct species,well marked by its thread-edged scabrousleaves, and pale flowers, which appear in July.”Introduced from Georgia in 1819.

• 10. Y. glauce'scens Haw. The glaucescent Yucca.

Identification. Haw. Sup. PI. Sue., p. 35.; Swt. Brit. FL-Gard., t. 53.

Engravings. Brit. Flow.-Gard., t. 53.; and our fig. 2400.

Spec. Char., §c. Leaves linear-lanceolate, entire, con-cave, glaucescent, straight ; margin slightly filamentose.(Swt.) A stemless species, with very stiff concaveleaves, of a dull glaucous colour, terminating in a sharphorny spine; margin entire, with here and there a slen-der white thread, slightly twisted. Flowers of agreenish white, tinged with yellow. A native of NorthAmerica. Introduced by Mr. John Lyons in 1819.This plant was first given to the nurseries from HighClere, where it flowers freely every year. It has thehabit of Y. filamentosa, with larger and more numerousblossoms, and more elegant sharp-pointed foliage. (SeeCard. Mag., vol. x. p. 254.)

2400

CHAP. CXVII.

HALF-HARDY MONOCOTYLEDONOUS PLANTS, DESERVING A PLACEIN THE BRITISH ARBORETUM.

Fotjrcroy'a longce'va Karw. etZuccar, Trans. Munich, vol. xvi.part 2. t. 48,49. A splendid plant,brought from South America to Eu-rope, in 1828, by the Baron Kar-winski; and introduced into Englandby M. Francis Rauch, in 1833. Atree, with a straight cjdindriealtrunk, 40 ft. or 50 ft. high, and from12 in. to 18 in. in diameter, andsurmounted by a flower-stem from36 ft. to 40 ft. high. It is found onthe summit of Mount Tanga, in theprovince of Oaxaca in Mexico, at anelevation of 10,000 ft. above the levelof the sea, growing in declivitiesalong with oaks and arbutuses. It flowers there in May, and ripens its fruitin the following winter. Baron Karwinski mentioned to M. Rauch, in 1833,

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