B42 CXLIX. IRIDACEZ. Tierra. 
distinguished by its very slender habit. Mass,! to N. J. Rhizoma fleshy. Stém 
smooth, 1—2” in diam., 1—2f high, branching at top and bearing 2—6 flowers. 
Bracts at the base of the branches withering. Leaves few, alternate, grass- 
like, 6—10’ long, amplexicaul. Sepals narrow, yellow, edged with purple. 
Petals linear-lanceolate. June. 
3. 1. vacusrris. Nutt. . 
Lvs. ensiform, longer than the low, compressed, 1-flowered scapes seg. 
of the perianth nearly equal, obtuse, emarginate, the sepals scarcely crested; 
caps. turbinate, 3-sided, margined.—Islands of Lake Huron, near Mackinaw, 
Nuttall, Roots extensively creeping. Leaves 2—5’ by 3—4”, those of the om 
bract-like. Scape 1—2’high. Flowers pale blue, the sepals rather broader. Jn. 
4. lL. sampucina. Flower-de-Lnce. Fr., Fleur-de-lis.—St, many-flowered, longer 
than the leaves; segments of the perianth emarginate, outer ones flat; Jus. bent 
inwards at the point; spathe membranaceous at the apex; fis. beardless, lower 
ones pedunculate ; stg. with acute, serrate divisions.—Native of the South ‘of 
Europe. Common in gardens. The prevailing color of the flower is light 
blue, often fading to white. May. f M nab 
5. 1. rumita. Dwarf Iris,—Scape very short (3—6’), 1-flowered; spathe 
shorter than the tube; sep. reflexed, narrower than the erect petals.—A small 
species from Hungary, cultivated in the edgings of walks. Leaves numerous, 
broad-ensiform, suberect. Flowers large, deep purple, appearing in early spring.t 
6. l. ocHko_evca.—Beardless ; Jvs. ensiform, depressed, striate ; scape subte- 
rete ; ova. 6-angled.—A tall species from Levant. Stem 3—4f high. Flowers 
ochroleucous or sulphur-yellow. July. t af) 
7. I. Cainensis. China Iris.—Scape compressed, many-flowered ; stigmas 
lacerated. A small species from China. Flowers elegantly striped. “A few 
other species are rarely cultivated in gardens. T 
2 IXIA. 
: GT. 10s, sticky ; alludiig to the glutinous juice of some species. aa 
Spathe of 2 or 3, ovate, short bracts; petals and sepals distinct or 
slightly united, similar, regular; sta. 3; filaments filiform; stigma 
straight or incurved, fixed by the base, subfiliform. 
1. Cuinensis.—S’. terete, flexudtis, leafy; vs. ensiform, vertical, sheathing; 
panicle somewhat dichotomous and corymbose ; perianth campanulate, segments 
6, lance-linear.—Native of S. Africa, frequent in gardens, Western and South- 
ern States. Whole plant smooth, 3—5f high. Leaves erect, tapering to an 
acute point. Flowers yellow, spotted with red inside, about 1’ long. Jl., Aug. f 
3. GLADIOLUS. 
P j Lat. gladius, a sword; in reference to the form ofthe leaves. _ 
Spathe 2-leaved; perianth irregular; stamens distinct, ascending ; 
stigmas 3; seeds winged —A large genus of bulbous plants, with large 
and showy flowers. None native. 
G. communis.—Spike unilateral; upper segment of the perianth covered by the 
jateral ones, 3 lower marked by a white, linear-lanceolate spot, lowest very 
large.—A fine border flower, from S. Europe. Stem 2—3f high, with the flow- 
ers arranged in a long, somewhat spiral row uponit. Perianth large, deep Tred, 
variegated with white. Its colors are liable to considerable variation. Jl. + 
4. TIGRIDIA. 
si Name in reference to the large spotted flowers. . 
Spathe 2-leaved ; the 3 sepals larger than the 3 petals; stamens 
monadelphous ; filaments united into a long tube. 
T. Pavonia. Tiger Flower —sSt. simple, flexuous; lvs. ensiform, veined ; 
segments flat; pet. panduriform.—A superb, bulbous plant, with large, beautiful 
fiowers, native of Mexico and Peru. Stem 2fhigh or more, erect, a healy, 
somewhat branched. Leaves erect, smooth, a foot long. Flower i s, 
