=A. applanata= (plano-convex-leaved). _fl._ unknown. _l._ twenty
to forty in a dense sessile rosette, reaching a couple of feet in
diameter, oblong-spathulate, 8in. to 12in. long, 2in. to 3-1/2in.
broad, the lower half of the face flat, the upper half concave,
suddenly terminating in a pungent brown spine above 1in. long,
blue-green bordered with brown; prickles 1/4in. to 1/3in. long,
bright brown. Mexico, 1869.
=A. atrovirens= (dark-green). Synonymous with _A. Salmiana_.
=A. attenuata= (attenuated).* _fl._ greenish-yellow, 2in. long;
pedicels about 1/4in. long, on a dense spike, 6ft. to 8ft.
long, and 6in. in diameter; bracts overtopping the perianth.
_l._ ten to twenty, in a dense rosette at the top of the stem,
oblong-spathulate, 2ft. to 2-1/2ft. long, 8in. to 9in. broad
two-thirds of the way up, narrowed to 2-1/2in. to 3in. above the
base, persistently glaucous, one of the most fleshy of all in
texture; face rather concave when young; tip not pungent, edge
quite entire. Stem 4ft. to 7ft. high, 3in. to 4in. thick. Mexico,
1834. A most distinct species.
=A. Beaucarnei= (Beaucarne's). Synonymous with _A. Kerchovei_.
=A. Botterii= (Botteri's).* _fl._ greenish-yellow, about 1in.
long, on a dense spike, longer than the leaves; primary bracts
lanceolate, with a long point, the lower ones as long as the
flowers; scape covered with adpressed lanceolate bracts. _l._ about
fifty in a rosette, oblong-spathulate, about 2ft. long, 6in. broad
above the middle, narrowed to 4-1/2in. above the base; pale green,
concave in the centre; spine hard, pungent, about 1/2in. long;
marginal teeth crowded, 1/8in., upcurved at the tip. Stemless.
Mexico, about 1865.
=A. bulbifera= (bulb-bearing). Synonymous with _A. vivipara_.
=A. cæspitosa= (tufted). Synonymous with _A. Sartorii_.
=A. cantula.= Synonymous with _A. vivipara_.
[Illustration: FIG. 46. AGAVE CELSIANA.]
=A. Celsiana= (Cels's).* _fl._ tinged purplish-brown, 2in. long,
in a dense spike, 1ft. or more long, and 6in. to 8in. in diameter
when expanded; scape 4ft. long, the lower bract leaves lanceolate,
the upper ones subulate. _l._ twenty to thirty in a rosette,
oblong-spathulate, 1-1/2ft. to 2ft. long, 4in. to 5in. broad at the
middle, narrowed to 2-1/2in. to 3in. above the base, persistently
glaucous, the point hardly at all pungent; spines very unequal in
size and shape, green, largest brown and horny at the top. Mexico,
1839. This is a beautiful species, the stem of which scarcely rises
off the surface of the ground. See Fig. 46.
=A. coccinea= (scarlet). _fl._ unknown. _l._ twenty to thirty in
a dense rosette, oblanceolate-spathulate, 1-1/2ft. to 2ft. long,
4in. to 6in. broad two-thirds of the way up, narrowed to 3in.
above the dilated base, where it is 1in. to 1-1/4in. thick, deep
heavy green; terminal spine 1-1/2in. or more in length, red; side
prickles irregular, deltoid, unequal, nearly straight, 1/6in. to
1/4in. long, red. Mexico, 1859.
=A. cochlearis= (cochleate). _fl._ yellowish green, above 4in.
long, in dense clusters. _l._ forming a sessile rosette 10ft.
broad, oblong-spathulate, 5ft. to 6ft. long, above 1ft. broad, 5in.
thick at the base, opaque green, with a deeply excavated face;
terminal spine very stout, pungent; side prickles curved variously,
middle sized, deltoid. Stems 26ft. high. Mexico, previous to 1867.
=A. Consideranti= (Considerant's). Synonymous with _A. Victoriæ
Regina_.
=A. Corderoyi= (Corderoy's).* _fl._ unknown. _l._ forty to fifty
in a dense rosette, rigidly erecto-patent, ensiform, 1-1/2ft.
long, 3/4in. to 1in. broad, bright green; terminal spine hard,
brown, 1in. long; side prickles moderately close, erecto-patent,
dark brown, 1/6in. long. Mexico, 1868. A very distinct and pretty
species.
=A. crenata= (crenated). Referred to _A. Scolymus_.
=A. cucullata= (hooded). Referred to _A. Scolymus_.
=A. dasylirioides= (Dasylirion-like).* _fl._ yellow, about 1-1/2in.
long; spike as long as the scape, often decurved; lower bracts
much longer than the flowers; pedicels obsolete; scape 6ft. long,
densely clothed with spreading subulate bract leaves, the lower
ones 1ft. long. _l._ eighty to a hundred in a dense rosette,
linear-ensiform, 1-1/2ft. to 3ft. long, about 1in. broad, narrowing
gradually from the middle to a short brown pungent point, pale
glaucous green, rigidly leathery; edge minutely denticulate.
Mexico, 1846.
=A. d. dealbata= (whitened). A variety of preceding, but with more
glaucous foliage.
[Illustration: FIG. 47. AGAVE DENSIFLORA.]
=A. densiflora= (close-flowered).* _fl._ yellowish-red, 1-1/2in. to
2in. long, on a dense spike, 2ft. long; pedicels very short; scape,
including the spike, 6ft. long, the lower bracts ascending, the
upper ones spreading. _l._ thirty to forty in a stemless rosette,
oblanceolate-spathulate, 2ft. to 3ft. long, and 2-1/2in. to 5in.
broad, bright green when mature; terminal spine 1/2in. long, thick,
pungent, slightly decurrent; side spines crowded, short, bright
chestnut brown. Mexico (previous to) 1857. See Fig. 47.
=A. Deserti= (Desert's).* _fl._ yellow, under 2in. long, on a
thyrsoid panicle, the branches very short, the lower horizontal,
the upper ascending; pedicels short; scape 4ft. to 10ft. high,
1in. to 2in. thick at the base, furnished with distant lanceolate
acuminate toothed bracts. _l._ few, in a rosette, oblanceolate,
6in. to 12in. long, 1-1/2in. to 2in. broad above the middle, thick,
fleshy, very glaucous; face deeply concave; terminal spine 1in. to
2in. long, slender; prickles crowded, strong, hooked, horny, nearly
1/4in. long. California, 1877.
=A. Desmetiana= (De Smet's). Probably synonymous with _A.
miradorensis_.
=A. Elemeetiana= (Elemeet's).* _fl._ yellowish-green, 1in. to
1-1/2in. long, in a dense spike 8ft. to 9ft. long, 7in. to 8in.
in diameter when expanded; pedicels 1/4in. long; scape, including
the spike, 12ft. to 13ft. high, stiffly erect, lower 3ft. to
4ft., barren, with squarrose lanceolate bracts. _l._ twenty to
twenty-five in a rosette, lanceolate-oblong, 1-1/2ft. to 2ft. long,
3in. to 6in. wide, slightly glaucous; face flat above the middle
terminal spine, not pungent, the margin pale and quite entire.
Stemless. A very distinct species. Mexico, 1864.
=A. Fenzliana= (Fenzl's). Synonymous with _A. Hookeri_.
=A. ferox= (fierce). _fl._ unknown. _l._ about twenty in a rosette,
oblong-spathulate, 4in. to 8in. broad; face nearly flat, except at
the top, slightly glaucous green; terminal spine above 1in. long,
hard, pungent; margin slightly wavy between the large dark brown
teeth, which are about 1/4in. long, and curved at the top. Mexico,
1861.
=A. filifera= (thread-bearing).* _fl._ greenish, about 2in. long;
pedicels very short and stout, in a dense spike 2ft. to 3ft. long;
scape 3ft. to 4ft. long, its bract-leaves subulate, the lower
ones ascending, the upper squarrose. _l._ sixty to a hundred in a
dense rosette, stiff, straight, ensiform, 6in. to 9in. long, 1in.
broad at the middle, gradually narrowing to a grey pungent tip;
face flat, the continuous grey edge splitting off copiously into
irregular spreading grey wiry threads; outer leaves of the rosette
not all recurved, but spreading stiffly. Mexico.
=A. f. filamentosa= (thready).* A form with larger leaves and
scape; including the spike, 10ft. to 12ft. high. A well-known,
handsome variety.
=A. Galeotti= (Galeotti's). _fl._ unknown. _l._ thirty to forty
in a dense rosette, 2ft. to 3ft. broad, oblong-spathulate, 1ft.
to 1-1/2ft. long, 2in. to 6in. broad; face rather flat or convex,
green; terminal spine hard, pungent; prickles close, straight, or
slightly hooked, purplish-black. Mexico, 1877.
=A. Ghiesbreghtii= (Ghiesbreght's). _fl._ unknown. _l._ thirty to
forty in a dense rosette, rigid, lanceolate, 9in. to 12in. long,
2in. to 3in. broad, bright glossy green; terminal spine 1/2in.
long, pungent; border narrow, red-brown till a late stage; side
prickles numerous, irregular, two to three lines long. Mexico,
1862. Very handsome dwarf species. _A. Rohanii_ and _A. Leguayana_
are mere varieties.
=A. heteracantha= (various-spined).* _fl._ greenish, 1-1/2in. long,
on a dense spike 3ft. long; scape 3ft. to 4ft. long. _l._ fifty to
eighty in a rosette, rigid, ensiform, 1-1/2ft. to 2ft. long, 2in.
to 2-1/2in. broad in the middle, dull green, with numerous darker
green lines on the back; terminal point 1in. long; side spines
numerous, strongly hooked, lanceolate. Stemless. Mexico.
=A. Hookeri= (Hooker's).* _fl._ large, yellow, very numerous,
in stalked panicled cymes. _l._ thirty to forty in a sessile
rosette, 8ft. or 9ft. in diameter, oblanceolate-spathulate,
bright green on the face, rather glaucous on the back, 4ft. to
5ft. long, 5in. to 9in. broad, 2in. to 3in. thick; terminal spine
2in. long, and decurrent for nearly half a foot; face flattish or
slightly concave; side prickles irregular, brown and horny, about
1/4in. long, and curved in different directions. Mexico. SYN. _A.
Fenzliana_. A rare and noble species, very massive.
=A. horrida= (horrid).* _fl._ unknown. _l._ thirty to forty in a
dense rosette, rigid, lanceolate-spathulate, 8in. to 12in. long,
1in. to 2in. broad, bright green; terminal spine pungent, nearly
1in. long; margin furnished with a continuous broad grey border,
with copious prickles 3/8in. to 1/2in. long.
=A. h. Gilbeyi= (Gilbey's).* _l._ about thirty, 3in. to 4in. long,
2in. broad, dark green with a pale stripe down the middle, three to
four large spines on each side. Mexico, 1873.
=A. h. lævior= (smoother). _l._ somewhat narrower, longer, with
marginal spines less strongly developed, and of a paler colour.
Mexico, 1870.
=A. h. macrodonta= (long-toothed). _l._ fifty to sixty, 2-1/2in.
broad; spines larger than in the typical form. Mexico, 1876.
=A. h. micrantha= (small-toothed). Border of leaf narrower, and
spines smaller, than in the typical form.
=A. Jacobiana= (Jacob's). Synonymous with _A. Salmiana_.
=A. Kerchovei= (Kerchove's).* _fl._ unknown. _l._ thirty to forty
in a stemless rosette, stiff, rigid, typically ensiform, 6in.
to 12in. long, 1-1/2in. to 2in. broad, narrowing gradually to a
pungent spine 1in. long, dull green, with a distinct pale central
band, rounded on the back, without any stripes of dark green,
the margin with a continuous moderately broad grey border; side
prickles irregular, grey, lanceolate, curved, 1/6in. to 1/4in.
long. SYN. _A. Beaucarnei_.
There are several varieties of _A. Kerchovei_, of which the following
are the most important:--
=A. K. diplacantha= (double-spined).* With very few distant, small
teeth, often collected or united in pairs.
=A. K. inermis= (unarmed). Dwarf, with spines entirely obsolete.
=A. K. macrodonta= (long-toothed). _l._ 1-1/2ft. long, without any
distinct central band, and with copious irregular grey lanceolate
prickles, about 1/3in. long.
=A. K. pectinata= (comb-like). _l._ 1ft. long, 2-1/4in. broad,
without any central band.
=A. lophantha= (crest-flowered).* _fl._ greenish, arranged in a
dense spike 4ft. to 5ft. long; scape 7ft. to 8ft. long, its leaves
brown, the lower ones 6in. long. _l._ thirty to forty in a rosette,
rigid, ensiform, 2ft. to 3ft. long, 1-1/2in. broad at the middle,
rather concave down the face, rounded on the back, not marked with
any lines, dull green; terminal spine 1in. long; margins bordered
by a very narrow continuous grey hoary line, furnished with distant
linear falcate teeth, about 1/12in. long, sessile. Mexico.
=A. l. cœrulescens= (bluish).* _l._ with a decided glaucous bloom.
=A. l. longifolia= (long-leaved). A mere variety of above species.
=A. macracantha= (long-spined).* _fl._ greenish, 2in. long, ten
to twelve in a loose raceme 6in. long, all solitary on ascending
pedicels 1/4in. to 1/2in. long; scape 2ft. to 3ft. long; bracts
erect. _l._ thirty to fifty in a stiff rosette 1ft. to 2ft. broad,
oblanceolate, 6in. to 12in. long, 1in. to 1-1/2in. broad, very
stiff and rigid, very glaucous; face rather thicker in the lower
half; terminal spine nearly black, very pungent, 1/2in. long;
side prickles purplish-black, sub-distant, 1/8in. long, with a
large point straight or slightly hooked. With a short stem, or
stemless. Mexico, 1830. It has many varieties, among which are _A.
Bessereriana_ and _A. flavescens_.
=A. Maximiliana= (Maximilian's).* _fl._ unknown. _l._ about
twenty in a sessile rosette, oblanceolate-spathulate, 1-1/2ft. to
2ft. long, 1-3/4in. to 3in. broad; face slightly glaucous green;
terminal spine pungent, brown, 1in. broad; side prickles bright
chestnut brown, larger and more irregular than in _A. americana_,
more hooked, and furnished with longer and sharper points, reaching
1/4in. long. Mexico. A very distinct species.
=A. micracantha= (small-spined). _fl._ yellowish, 1-1/2in. long, in
a dense spike 3ft. to 4ft. long, 6in. to 7in. broad when expanded.
_l._ twenty to thirty in a shortly stalked rosette, oblanceolate
oblong, 15in. to 18in. long, 3in. to 5in. broad above the middle,
narrowed to 2in. to 3in. above the base, bright green; face
flattish above the centre; terminal spine red brown, moderately
firm; the copious close reddish-brown horny teeth about 1/12in.
long, the upper ones ascending, the lower deflexed. Mexico, 1860.
=A. miradorensis= (Mirador).* _fl._ unknown. _l._ about thirty in
a sessile rosette, oblanceolate-spathulate, 1-1/2ft. to 2ft. long,
2in. to 2-1/2in. broad above the middle, thin but firm in texture,
very glaucous, with a firm red-brown terminal spine 1in. long;
side prickles very minute, crowded, colourless, five or six to an
inch in the centre of the leaf. Mexico, 1869. SYN. (probably) _A.
Desmetiana_.
=A. Noackii= (Noack's). A synonym of _A. Sartorii_.
=A. ornata= (adorned). A synonym of _A. americana picta_.
=A. Ortgiesiana= (Ortgies'). A dwarf form of _A. schidigera_ with a
pale central band to the leaf. Mexico, 1861. A widely-distributed
and desirable species.
=A. pendula= (pendulous). Synonymous with _A. Sartorii_.
=A. polyacantha= (many-spined).* _fl._ greenish-yellow, 1-1/2in.
to 2in. long; flowering-stem 8ft. to 12ft. high, including the
dense spike, which is 3ft. to 4ft. long. _l._ about thirty in a
sessile rosette, oblanceolate-spathulate, rigid, 1ft. to 2ft. long,
2-1/2in. to 5in. broad above the middle, bright green, slightly
glaucous when young; terminal spine dark brown, pungent, 1/2in. to
3/4in. long; side prickles crowded, deltoid, dark chestnut brown,
irregular, 1/12in. or 1/8in. long, all sub-patent. Mexico, 1800.
SYNS. _A. uncinata_, _A. xalapensis_.
=A. Poselgerii= (Poselger's). _fl._ purplish, rather more than 1in.
long; scape, including the spike, 6ft. to 10ft. _l._ twenty to
thirty in a dense rosette, rigid, ensiform, 1ft. to 1-1/2ft. long;
1-1/2in. to 2in. broad at the middle, dull green, with a broad pale
band down to the face, rounded and marked with numerous distinct
green lines down the back; margin furnished with a continuous
straight, moderately broad edge; terminal spine 1in. long, brown,
pungent; side prickles moderately close, lanceolate, hooked, 1/6in.
long. Trunk, 4in. to 6in. long. Texas.
=A. potatorum= (drinkers'). _fl._ greenish yellow, 3in. long; scape
12ft. high, including the thyrsoid panicle, which is 4ft. to 5ft.
long. _l._ about twenty in a dense sessile rosette, 4ft. to 5ft.
broad, oblong-spathulate, 2ft. to 2-1/2ft. long, 7in. to 9in. broad
above the middle, a dull glaucous green; face slightly concave;
terminal spines hard, pungent, 1-1/2in. to 2in. long; side prickles
deltoid-cuspidate, about 1/4in. long, with the edge slightly wavy
between them. Mexico, 1830.
=A. pruinosa= (frosty).* _fl._ unknown. _l._ ten to twenty in a
dense rosette, spreading, oblanceolate-oblong, 1-1/2ft. to 2ft.
long, 4in. to 5in. broad above the middle, soft and fleshy in
texture, pale glaucous green; terminal spine very weak; edge
furnished with minute irregular spreading deltoid serrations, not
more than quarter line long. Mexico, 1863. A very distinct species.
=A. Roezliana= (Roezl's). _fl._ unknown. _l._ twenty to thirty in
a sessile rosette, stiff, ensiform, 6in. to 7in. long, 1in. to
1-1/2in. broad at the middle, bright glossy green, with a distinct
pale band down the centre, broadly rounded on the back, without any
darker green lines, margined with a continuous moderately broad
border, red brown at first, fading into grey when old; terminal
spines bright reddish brown, pungent, 1/2in. to 3/4in. long; side
prickles copious, spreading, lanceolate, curved, 1/4in. long.
Mexico, 1869.
[Illustration: ACACIA LEPROSA (LEMON). A. LINEATA (ORANGE).]
=A. Salmiana= (Prince Salm-Dyck's).* _fl._ greenish yellow, 4in.
long; panicle thyrsoid, 6ft. to 8ft. long, with erecto-patent
branches and flowers in dense clusters; scape, exclusive of the
panicle, 20ft. high. _l._ twelve to thirty in a dense rosette,
which is often 5ft. to 6ft. broad, oblanceolate-spathulate, 2ft. to
4ft. long, 4in. to 6in. broad above the middle, a dull, slightly
glaucous green; face more or less concave; terminal spine 1-1/2in.
to 2in. long, hard and pungent; side prickles 1/4in. long, chestnut
brown, hooked up or down. Mexico, 1860. SYNS. _A. atrovirens_, _A.
Jacobiana_, _A. tehuacensis_.
=A. S. latissima= (very broad). _l._ 2ft. to 3ft. long, by 8in. to
9in. broad above the middle.
=A. Sartorii= (Sartor's). _fl._ greenish, 1-1/2in. long; pedicels
very short, in a dense spike about 3ft. long, 5in. to 6in. broad
when expanded; scape 3ft. to 4ft. long, the green linear ascending
bracts 2in. to 4in. long. _l._ thirty to forty spaced out in a
loose rosette, ensiform, 1-1/2ft. to 2ft. long, 3in. broad at the
middle, bright green, with a pale band down the middle; face flat;
terminal spine small, not pungent; side prickles minute, crowded,
spreading, tipped with red-brown. Caudex 1ft. to 2ft. long,
sometimes forked. SYNS. _A. cæspitosa_, _A. Noackii_, _A. pendula_.
=A. schidigera= (spine-bearing).* _fl._ almost identical with _A.
filifera_. _l._ fifty to eighty in a dense sessile rosette, stiff,
ensiform, 12in. to 15in. long, 3/4in. to 1in. broad at the middle,
similar in colour and texture to those of _A. filifera_, but the
grey marginal border, and splitting off into flat shavings, not
mere threads.
=A. Schnittspahni= (Schnittspahn's). Referred to _A. Scolymus_.
=A. Scolymus= (Scolymus). _fl._ greenish yellow, 2-1/2in. to
3in. long; branches few, with the flowers at the end in very
dense clusters; scape 14ft. to 16ft. high, including the thyrsoid
panicle, which is 4ft. long and 2ft. broad, furnished with green
bracts. _l._ twenty to thirty in a dense rosette 1-1/2ft. to
3ft. broad, oblong-spathulate, 9in. to 18in. long, 3in. to 6in.
broad above the middle, very glaucous, abruptly terminating in a
pungent spine, 1in. or more long; side prickles chestnut brown,
about 1/4in. long; edge wavy between them; those on the lower half
smaller and directed downwards. Mexico, 1830. Other so-called
species referred to this are _A. amœna_, _A. crenata_, _A.
cucullata_, _A. Schnittspahni_, and _A. Verschaffeltii_.
=A. S. Saundersii= (Saunders'). _fl._ about 1ft. long; teeth very
large.
=A. Seemanni= (Seemann's).* _fl._ unknown. _l._ twenty in a sessile
rosette, 1ft. to 1-1/2ft. broad, oblong-spathulate, 6in. to 9in.
long, 3in. to 3-1/2in. broad at the middle, narrowed to 2in. above
the dilated base, slightly glaucous; face flat, except close to the
top; terminal spine pungent, dark brown, 1/2in. long; side prickles
large, moderately close, slightly curved upwards or downwards.
Guatemala, 1868. There are two or three garden forms of this
species.
=A. Shawii= (Shaw's).* _fl._ greenish yellow, 3in. to 3-1/2in.
long; panicle thyrsoid, about 2ft. long and broad; clusters
dense, composed of thirty to forty flowers, surrounded by large
foliaceous fleshy bracts. _l._ fifty to sixty, or more, forming a
dense globose sessile rosette 2ft. in diameter, oblong-spathulate,
8in. to 10in. long, 3-1/2in. to 4-1/2in. broad at the middle,
deep green; terminal spine brown, 1in. long, the upper third or
quarter entire, the rest furnished with crowded upcurved lanceolate
prickles, 1/4in. to 1/2in. long. California, 1877. This species is
very rare at present, but is a most distinct and handsome plant.
=A. sobolifera= (soboliferous). _fl._ greenish yellow, 2in. to
2-1/2in. long, in a deltoid panicle, of which the lower panicles
are 9in. to 12in. long, and bear a hundred flowers each; pedicels
1/4in. to 1in. long; scape 8ft. to 10ft. high, 2-1/2in. thick at
the base. _l._ twenty to forty in a shortly caulescent rosette,
oblanceolate-oblong-spathulate, 2ft. to 3ft. long, 3in. to 5in.
broad at the middle, very bright green; face deeply channelled,
the border much raised and tip often recurved; terminal spine
sub-pungent, chestnut brown, 1/2in. long; side prickles distant,
brown, hooked, 1/12in. to 1/8in. long. West Indies, 1678.
=A. striata= (striated-leaved).* _fl._ brownish green outside,
yellow inside, 1in. to 1-1/2in. long; pedicels very short; spike
dense, 2ft. to 3ft. long; bracts linear, shorter than the flowers;
scape 6ft. to 8ft. high, including the spike, furnished with
numerous spreading subulate bracts, which are 2in. to 3in. long.
_l._ 150 to 200 in a dense rosette, linear-ensiform, 2ft. to
2-1/2ft. long, 1/4in. to 3/8in. broad above the deltoid dilated
base, where they are 1/4in. thick and 1in. broad, narrowed
gradually from the top of the base to the point, rigid in texture,
glaucous green; face rather keeled, and the back more so; point
brown, pungent, 1/2in. long; edges minutely serrulate. Mexico, 1856.
=A. s. echinoides= (Echinus-like). _l._ about 6in. long, 1/3in.
broad at the middle; face flat. Mexico, 1869. Dwarfer and stiffer
in habit than the variety _stricta_.
=A. s. recurva= (recurved-leaved). _l._ longer than in the type,
3ft. to 4ft., more or less falcate, narrower, and decidedly convex
on both surfaces.
=A. s. stricta= (upright). _l._ about 1ft. long, very stiff, 1/4in.
broad at the middle, both faces convex. _A. Richardsii_ comes near
to this variety.
=A. tehuacensis= (Tehuan). Synonymous with _A. Salmiana_.
=A. uncinata= (hooked). Synonymous with _A. polyacantha_.
=A. univittata= (one-striped).* _fl._ green, 1-1/2in. long (or
less); spike 10ft. to 12ft. long, 6in. to 7in. thick; pedicels
1/4in. long; scape 4ft. long, exclusive of the spike, its bracts
dense and squarrose. _l._ fifty to eighty in a stemless rosette,
rigid, ensiform, 2ft. to 2-1/2ft. long, 2in. to 3in. broad at the
middle, narrowed slightly downwards, and very gradually upwards,
dull green, with a broad pale band down the face, faintly lineate
on the back; margin bordered by a narrow, continuous grey horny
line, furnished with hooked lanceolate prickles, 1/8in. long, from
1/2in. to 1in. apart; terminal spine brown, pungent, 1in. long.
Mexico, 1830.
=A. utahensis= (Utahan).* _fl._ yellowish, about 1in. long;
peduncles ultimately 1/4in. long; scapes, 5ft. to 7ft. high,
including the 1ft. to 2ft. spike. _l._ stemless, ensiform, 6in. to
12in. long, 1in. to nearly 2in. broad, thick, glaucous; terminal
spine channelled, pungent, about 1in. long; marginal prickles,
1/8in. to 1/2in. long, white, with a darker base. Southern Utah,
1881. This is a true alpine species, perfectly hardy, and of very
easy culture.
=A. Vanderdonckii= (Vanderdonck's). Synonymous with _A. xylacantha_.