BROWALLIA JAMESONII. 
5 
necessary to give full exposure to the rays of the sun, otherwise the flowers will neither 
expand in such profusion nor will the colours he nearly so brilliant ; and no damage can be 
sustained by such exposure, if a sufficiency of moisture be supplied to the roots, as the large 
fleshy corms will enable the plant to bear almost any amount of solar heat without injury. 
During the season of growth and flowering, expose to a humid atmosphere, and give a 
free supply of water at the roots ; occasionally a little much-diluted liquid manure might be 
administered with good effect, but great care is requisite that this be neither too rich nor 
given in too great a quantity, otherwise the fleshy corms are liable to be injured. As the 
growth diminishes, gradually lessen the quantity of moisture, and in winter keep the plants 
rather dry, and in an airy situation. 
It may possibly be advantageous to prune the plants a little during the season of rest, and 
stopping during the early part of the season of growth would make them more bushy. 
M. Alphonse De Candolle, in his “ Monograph of Apocynacese,” has separated this 
genus from the old Linnscan genus Echites, giving it the name of Dipladenia, from diploos 
double, aud aden a gland, in allusion to the two tubercles which are found at the base of 
the ovary. The genus as at present constituted contains about twenty species, all 
deserving cultivation, and several of which have been introduced to this country through 
Messrs. Yeitch and Son, Exeter. 
Propagation is effected by cuttings of the half-ripened wood, planted in sand in the 
usual way, and placed in the propagating house or other situation where they can receive a 
brisk moist heat. 
BROWALLIA JAMESONII. (Mr. Jameson’s Browallia.) 
Class, Didynamia Order, Angiospermta. Nat. Order , Scrophulariace^e. (Fig-Worts, Veg. King.) 
Generic Character. — Calyx membranous, tubular, ten- 
ribbed, five-toothed. Corolla salver-shaped, resupinate 
from the contortion of the peduncle; tube fifteen-nerved, 
ventricose at top ; limb oblique, five-lobed. Stamens four, 
didynamous, without any rudiment of a fifth. Anthers of 
the upper filaments reniform ; of the lower ones parallel 
with the filaments, having the upper cell the smallest, and 
sometimes abortive. Ovary surrounded at the base by a 
large, cup-shaped, fleshy disk. Stigma two-lobed, four- 
tubercled, with two excavations on the back for the re- 
ception of the upper anthers. Capsule oblong, two-celled. 
two-valved, many-seeded. Dissepiment contrary. Pla- 
centas two, fleshy. Seeds angular. 
Specific Character.— Plant a shrub. Leaves alternate, 
neat, about the size of those of a broad-leaved Myrtle, to 
which they bear a considerable resemblance. Racemes 
axillary and terminal, containing from three to five 
flowers. Calyx teeth acute. Corolla of a rich orange ; limb 
five-lobed, oblique, spreading ; lobes roundish, ovate. Disk 
conspicuous. 
Authorities and Synonymes. — Browallia, Lin. Brow- 
allia Jamesonii, Bentham. 
This species of Browallia is the most beautiful and remarkable of the whole genus ; 
and especially when it is studded with a profusion of bright orange blossoms, in which state 
it appears throughout most of the summer and autumn. It differs also from all the kinds 
hitherto introduced in being a neat evergreen shrub, with a habit not much unlike that of 
a myrtle ; whereas of the seven or eight kinds previously known in our collections all were 
annuals : of these the speciosa bears much larger flowers than our present subject, but being 
annual is far less valuable. 
For the opportunity of figuring this very interesting plant we are indebted to Messrs. 
Yeitch and Son, by whom it was lately introduced, and in whose nursery it was blooming 
profusely in June, 1848. It is a native of the north of Peru, and was found by their 
collector, Mr. William Lobb, growing at an elevation of 6000 feet, in woods near 
Molitre, in the province of Cuenca, which lies inland from the Gulf of Guayaquil ; he 
describes it as a shrubby plant two or three feet in height. 
The cultivation of all the annual species is so well known, that no more need be said 
than that the seeds should be sown in pots, and placed in a hotbed like other tender 
annuals ; after being transplanted into pots of light rich soil, and grown to a sufficient size 
in heat, they should be removed to the greenhouse to flower, and where, during the summer, 
they will make a very good show. 
