




OF ORNAMENTAL EXOTIC PLANTS. 33 
and if a few potsherds are mixed with it so much the better. In summer plenty of air and water should be given, 
and shade in sunny weather.” In winter very little fire heat is necessary ; but it requires to be placed in an airy part 
of the greenhouse, as it is easily killed by damp. The plant was introduced from the Swan River Colony in 1843. 
2.—TETRATHECA VERTICILLATA Past. THE WHORLED-LEAVED TETRATHECA. 
Synonymes.—T. speciosa Hort.; Tremandra verticillata Hiigel. Speciric Cuaracter.—Pubescent. Leaves linear, whorled, acute, 
Encravines.—Paxt. Mag. of Bot., vol. xiii., p. 171 5 and our fig. | hairy. Flowers axillary, peduncled; segments of the calyx linear- 
4,in Pl. 9. lanceolate. 
Description, &c.—This is probably the same plant as that described by Cunningham as 7’. rubioides. The 
flowers not only differ in colour from those of 7’. hirsuta, but they do not close in the absence of the sun, as is the 
case with that species. The plant is easily grown in light sandy soil; but it requires ample drainage. It was 
raised by Mr. Low of Clapton from seeds gathered by Drummond in New South Wales, and sent home in 1843. 
OTHER SPECIES OF TETRATHECA. 
T. JUNCEA Smith. 
A plant with reed-like branches and two-edged stems, which are almost naked, the leaves being very few and 
lanceolate. The flowers are generally white. It was introduced in 1803. 
T. GLANDULOSA Labill. 
This species bears considerable resemblance to 7. hirsuta, but the flowers are larger, and purple. It was 
introduced in 1822. 
T. ERICAFOLIA Smith. 
A heath-like plant, the flowers of which are rose-colour or white, and somewhat drooping. It was introduced 
in 1820. 
T., THYMIFOLIA Smith. 
This species is nearly allied to the last, but the flowers are purple. It was introduced in 1824. 
T. RUBIOIDES Cunn. 
This species is very nearly allied to the last, but the branches are hoary, and the flowers, which are purple, are 
decidedly drooping. It was introduced in 1825. 
The last three species are all low shrubs, from half a foot to a foot high, and bear so much resemblance to each 
other, that they will probably prove to be varieties of the same species. All the species of this genus are rather 
difficult to preserve, as they are easily killed by damp; and they are also difficult to procure, as when the seeds 
are sent home, they very often do not vegetate. 
GENUS II. 
TREMANDRA R. Br. THE TREMANDRA. 
Lin. Syst. DECANDRIA MONOGYNIA. 
Generic Cuaracter.—Calyx of five sepals. Petals five. Stamens ten. Anthers two-celled. (G Don.) 
Description, &c.—The plants belonging to this genus are shrubs, with the habit of Helianthemum, but beset 
with starry hairs. Only two species are described in books, and it does not appear that either of them have been 
introduced. The name of Tremandra alludes to the anthers being so slightly fixed to the points of the filaments 
as to shake with the slightest movement. 







