AN ENCYCLOPADIA 
OF HORTICULTURE. 981 ` 
Yucca—continued. 
Y. canaliculata (channelled). A form of Y. Treculeana. 
Y. circinata (curled-threaded). A form of Y. baccata. 
` Y. concava (concave) of Haworth. A form of Y. filamentosa. 
Y. concava (concave), of gardens. A synonym of Y. Treculeana. 
Y. conspicua (conspicuous). A form of Y. aloifolia. 
E: Y. constricta (constricted). fl., perianth white, 2in. long, the 
: * segments oblong, acute; pedicels four to six lines long; panicle 
deltoid, 3ft. to 4ft. long, the branches ascending, Gin. to Yin. long, 
ten to fifteen-flowered ; peduncle elongated. Summer. J. 100 to 
200, dense, rigid, linear, lift. to 2ft. long, six to eight lines broad, 
slightly narrowed at base, channelled above, pungent-tipped, the 
narrow, red-brown margins very filamentose. Stem simple, 
? åft. to 5ft. high. Utah to North Mexico, 1862. Half-hardy. 
SYNS. Y. albo-spica (F. d. S. ser. ii, vii., p. 110), Y. angustifolia, 
of Carrière (R. H. ix. 1860, f. 3). 
Y. contorta (twisted) A name applied in gardens to both 
Y. rupicola and Y. Treculeana. 
Y. cornuta (horned). A garden synonym of Y. Treculeana. 
Y. crenulata (crenulate). A form of Y. aloifolia. 
Y. Desmetiana (De Smet’s). Z. 100 to 200, rather loosely dis- 
posed, linear, nearly 1ft. long, in. D 3in. broad, Ate 
young ones purple, glaucous, the old ones green, n 
Mem with Mov. fala, serrulated margins, dilated at base. 
exico, 1868. Greenhouse. 
Y. Draconis (dragon's). A form of Y. aloifolia. - 
Y. Ellacombei (Ellacombe’s). A form of Y. gloriosa. 
serne (sword-leaved) A form of Y. flexilis. La 
. exigua (dwarf) /l., perianth white, tinged with green outside, 
the ents oblo E pec: llin. long; bracts large, lanceolate ; 
pedicels very «hot: panicle loose, 3ft. long, the branches 
pubescent, ascending, 6in. long; peduncle elongated, furnished 
.. With much-reduced, lanceolate leaves. Summer. /. thirty to 
. forty, ensiform, Lut. long, lin. to llin. broad, similar to those 
mu of Y. iosa, the margins brown, entire. Western North 
_America, 1873. Plant stemless. (Ref. B. 314.) m 
Y. falcata, (sickle-leaved). A form of F. flexilis. ; 
; : filamentosa (thready) Silk Grass. G. perianth white, 
. tinged with green outside, 12in. to is, long, ihe segments oblon 
E ‘lanceolate, Jin. to Jin. broad ; pedicels drooping, 
. much recurved, the marginal fibres stronger. 
Yucca—continued, 
jin. long ; bracts large, scarious ; cle rhomboid, the branches 
flexuous, ascending, 6in. long ; uncle elongated ; inflorescence 
4ft. to 8ft. long. June. l. thirty to fifty, in a dense rosette, 
ensiform, 14ft. to 2ft. long, 13in. to 2in. broad, rather firm, Reed- 
like, slightly glaucescent, the whitish margins clothed with 
thread-like filaments. North America, 1675. Plant stemless or 
nearly so. See Fig. 240. (B. M. 900; Ref. B. 324 ; R. H. 1860, p. 214.) 
Y. f. antwerpensis (Antwerp) d. panicle 1ft. to lift. long, 
the branches four to six, shortly pubescent; inflorescence 2ft. 
to 3ft. long. IL fifteen to twenty, erecto-patent, 1ft. to lift. long, 
lin. broad, the marginal threads few and very slender. 1875. 
(B. M. 6316, under name of Y. orchioides major.) 
Y. f. aureo-variegata (golden-variegated). I marked with 
bright yellow, longitudinal bands. 1884. Greenhouse. 
Y. f. concava (concave). /. lift. long, 3in. to 4in. broad, erect- 
incurved, concave on the face. 1810. 
Y. f. flaccida (fiaccid’.* /., perianth segments broad; panicle 
branches pub t. l. slenderer and weaker ew? zm the typ 
ime 
See 
241. Syn. Y. flaccida (B. R. 1895; Ref. B. ; R. H. 1859, p. 556) 
Y. f. grandiflora (large-flowered). A synonym of Y. f. mazima. x 
Y. f. major (greater). A synonym of Y. f. maxima. i 
. f. maxima (largest). /., perianth 2jin. to 3in. long, the / 
bees more gees than in the type. 1873. (tts B 3) 
This is also known as Y. f. grandiflora and Y. f. major. ^ ere 
is a white-variegated form. "d à Ran t o 
. f. orchioides (Orchis-like).* ji., perianth segments ovate, lin. 
bie ; raceme simple, gn, long ; peduncle lift. long. L ten to 7 
to 9in. long, eight to ten lines broad, ly fila- 
mentove on the margins: SL. See Fig. 242. SYN. Y. orchioides — 
(R. H. 1861, p. EE i 
W. * (puberulous). f., — — oblong- 
lanceo! in. to 1 long; panicle- | E a 
er Od MEE ved than in the type. Sra Ve pakana — 
diot. BURY RR GM, s > 
