184 
THE LADIES' FLOWER-GARDEN 
H. SPECIOSUS, Hook.; Bot. Mag. 3295; syn. LEIGHIA SPECIOSA, Dec; > TITHONIA TAGETIFLORA, D. Don, 
Bot. Reg. t. 591. 
This very singular flower has an orange scarlet ray, and a bright golden yellow disk. The flower stalk is 
swollen near the flower like that of a French marigold ; and the appearance of the disk and ray somewhat 
resembles that of a Zinnia. It is a native of Mexico, and was introduced in 1834. 
GENUS VII. 
BIDENS, Lin. THE BUR-MAEIGOLD. 
Lin. Syst. SYNGENESIA FRUSTRANEA. 
Generic Character. — Flowers of the ray ligulate, neuter ; flowers I Receptacle flattish, paleaceous. Fruit more or less compressed, prickly, 
of the disk tubular, hermaphrodite ; involucral scales in two series. | terminated by a beak, which ends in two or five stiff hairy awns. 
1. BIDENS STRIATA, Swt. THE STRIATED BUR-MARIGOLD. 
Ehoratings. — Swt. Brit. Flow. Card. t. 237; Bot. Mag. t. 3155. 
Specific Character. — Stem somewhat tetragonal, striated, rather 
downy. Leaves glabrous, ternate. Leaflets ovate-lanceolate, acumin- 
ated, serrated. Heads corymbose, pedicillate, the outer scales of the 
involucrum compressed. Fruit somewhat tetragonal, with scabrous 
angles, terminated by two bristles. 
Description, &c. — A vigorous-growing showy annual, having rather small flowers, consisting of only 
five white florets in the ray, with a golden yellow disk. The plant is not suitable for a small garden, as the 
stem grows three or four feet high, with numerous branches, and a great number of rather large and coarse-looking 
leaves ; though it looks well in a large garden from the great profusion of its flowers. It is a native of Mexico, 
and was introduced about 1830. We saw the plant growing in the garden of Mr. Harrison's beautiful little 
villa at Cheshunt, in the summer of 1839 ; but we do not know where seeds can be procured in the shops. 
2.— BIDENS GRANDIFLORA, Sail. THE LARGE-FLOWERED BUR-MARIGOLD. 
Synonymes B. odorata. Dun.; B. diversifolia, Hort.\ B. Specific Character. — Stem cylindrical, glabrous. Leaves glabrous, 
serratula, Desf. ; Coreopsis diversifolia, Jacq. ; Kemeria serrulata, 
Cass. ; Cosmea lutca, Sims. 
Engravings. — Bot. Mag. t. 1689 ; and our fig. 11, in Plate 32, 
under the name of Cosmea lutea. 
pinnate, with three or five pairs of leaflets, some of which are oblong 
and serrated, or a little cut ; others are divided into linear lobes. 
Heads pedicillate. Involucral scales ciliated. Fruit subtetragonal, 
glabrous ; terminated by two or four awus. 
Description, &c. — A pretty yellow flower, a native of Mexico, brought to England by Lord Holland from 
Madrid in 1812. It was described and figured by Dr. Sims in the Bot. Mag., under the name of Cosmea lutea; 
but it is quite evidently a Bidens, and it is called so in De CandoUe's new arrangement. Seeds may be procured 
at Charlwood's, under the name of Bidens diversifolia, and they should be sown in a warm border in March or 
April, when they will flower in July. 
GENUS VIII. 
COSMEA, JVilld. THE COSMEA. 
Lin. St/St. SYNGENESIA FRUSTRANEA. 
Generic Character..— Flowers of the ray ligulate, neuter. Flowers 
of the disk tubular, hemaphrodite. Involucrum double ; each com- 
posed of eight or ten scales, which are com1)ined more or less at the 
base. Receptacle flat, paleaceous. Paless membranous, each drawn 
out into a thread at the apex. Anthers each terminated by a scariose 
cordate appendage. Fruit tetragonal, beaked, and sometimes Btipitate ; 
crowned by 2 — 4 scabrous deciduous awns. 
1.— COSMEA BIPINNATA, Willd. THE FINE-LEAVED COSMEA. 
remote, quite entire, linear segments, 
crowned by three awns. 
Fruit glabrous, beaked; 
Synonyme. — Cosmos bipinnatus, Cav. 
Engraving. — Bot. Mag. 1. 1535. 
Specific Character. — Quite glabrous. Leaves bipinnate, with 
Description, &c. — This beautiful plant was discovered in Mexico, before 1789 ; as seeds of it sent to 
