OP ORNAMENTAL EXOTIC PLANTS. 
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GENUS III. 
TRIPTILION Ruiz et Pav. THE TRIPTILION. 
Un. Syst. SYNGENESIA .<EQUALIS. 
Generic Character. — Head five-flowered, homogatnous. Involucre 
shorter than the flowers, and consisting of ten keeled leaflets, each 
terminated by a spine ; the leaflets arranged in a double series, the 
outer ones spreading, the inner ones erect. Receptacle destitute of 
scales, but covered with short hairs. Corolla two-lipped, the outer lip 
broad and three-toothed, the inner lip two-cleft. Anthers furnished 
with a tail. Pappus feathery. 
Description, &c. — This is a very small genus, of which only two species appear to have been introduced into 
British gardens, and only one of which is a greenhouse plant. The name of Triptilion alludes to the feathery 
pappus of the seed-vessels, which is very long, and generally consists of three stalks bordered by long feathery 
hairs. 
1.— TRIPTILION SPINOSUM Buiz et Pav. THE SPINY TRIPTILION. 
Synonymes. — T. lanceolatum Willd.-, Nassaubia spinosa Z). Zlow. I Specific Character. — Stem herbaceous, much branched. Flowers 
Engravings. — Bot. Reg. for 1841, t. 22; The Botanist, t. 224; produced in corymbs at the ends of the branches. Leaves pinnately 
and omfig. 5, in PI. 36. | lohed ; lobes terminating in a spiny mucro. 
Description, &c. — This plant is remarkably beautiful, notwithstanding the small size of its flowers, which are 
of a most intense and brilliant blue ; though it is remarkable that they become wliite the moment they are 
immersed in warm water. This is the more remarkable, as dried specimens retain their colour for an indefinite 
period. The plant has tuberous roots, something like those of a Dahlia in miniatm’e. As soon as the plant has 
flowered, the stems should be cut down, and the ball of earth having been reduced, the plant should be shifted to a 
smaller pot till spring, when it should be potted for flowering in a soil composed of sandy loam mixed with rotten 
leaves. The root-leaves, which are very pretty, spring up in autumn as soon as the flowering stems are cut off, 
but they die off as the flower stems grow up in summer. The plant has hitherto been only propagated by seeds. 
GENUS IV. 
BRACHYCOME Cass. THE SWAN RIVER DAISY. 
Un.Syst. SYNGENESIA POLYGAMIA SUPERFLUA. 
Generic Character. — Head many-flowered, heterogamous. Flowers | membranous at the margins. Receptacle conical, slightly pitted, 
of the ray in one series, ligulate, feminine ; those of the disk tubular i Anthers devoid of a tail. Pappus very short and resembling a bristly 
and hermaphrodite. Involucre campanulate ; scales in few rows, and ! cro%vn. 
Description, &c. — This genus is nearly allied to the Daisy, and most of the plants contained in it are not 
worth cultivating. The name of Brachycome signifies short hair, in allusion to the shortness of the pappus. 
1.— BRACHYCOME IBERIDIFOLIA Benth. THE LARGE SWAN DAISY. 
Engravings. — Bot. Mag., t. 3876 ; Bot. Reg. for 1841, t. 9 ; The 
Botanist, t. 230 ; and our fig. 6, in PI. 36. 
Specific Character. — Stem erect, branched. Leaves pinnately 
cut, segments linear-subulate, distinct, entire. Peduncles naked, each 
bearing a single head of flowers. Involucre furnished ivith oblong 
scales somewhat pointed and membranous at the top. Florets of the 
ray, tubular. Limb smooth, five-toothed. Stamens five. 
Description, &c. — Wlien this beautiful little plant was first introduced, it was supposed to be a hardy annual, 
because it was found that when raised from seeds it would flower the first year in the open border. After a little 
