and may be' continued two or three years in a warm j 
ftove ; but it is apt to fp read too far fora fmall ftove, 
fo that where there is not great room, it is not worthy 
of culture. 
The fifteenth fort grows naturally in Jamaica ; this 
rifes with {lender twining {bilks eight, or ten feet high ; 
the leaves of thefe are ftiaped a little like thofe of the 
common great white Convolvulus-, but the foot-ftalks, 
•which are pretty long, do each fuftain many purple 
fiowers, growing in bunches. The feed-vdtels of 
this fort are three-cornered, and have three cells, each 
containing a fingle feed. This is an annual plant, 
which requires a hot-bed to raife it, and muff be kept 
in a glafs-cafe or a ftove, otherwife the feeds will not 
ripen here. 
The fixteenth fort has been long preferved in feveral 
curious gardens in England. It grows naturally in 
the Canary I Hands ; this hath a ftrong fibrous root, 
from which arife feveral twining woody ftalks, divid- 
ing into many {mailer ; thefe, where they have fup- 
port, will grow more than twenty feet high, and are 
garniftied with oblong heart-fhaped leaves, which are 
foft and hairy. The flowers are produced from- the 
wings of the leaves, feveral Handing upon one foot- 
ftalk •, thefe are for the moft part of a pale blue, but 
there is a variety of it with white flowers. This plant 
flowers in June, July, and Auguft, and fometimes 
ripens feeds here ; but as the plants are eafily propa- 
gated by layers, and alfo from cuttings, the feeds are 
not fo much regarded j nor indeed will thofe plants 
which are raifed by layers or cuttings produce feeds, 
though thofe which come from feeds leldom fail. As 
the leaves of this plant continue green all the year, 
the plants make a pretty variety in winter in the 
green-houfe ; for it will not live abroad in winter in 
this country, though it only requires the fame pro- 
teftion as- Myrtles, and other hardy green-houfe 
plants. It may be propagated by laying down the 
young {hoots in the fpring, which generally put out 
roots in three or four months •, then they may be 
taken from the old plants, and each planted in a fe- 
parate pot filled with light earth, and placed in the 
{hade till they have taken new root -, after which 
they may be placed with other hardy green-houfe 
plants till autumn, when they {hould be removed into 
the green-houfe, and afterward treated in the fame 
way as Myrtles, and other green-houfe plants. If 
the tender cuttings of this are planted during any of 
the fummer months, in pots filled with light earth, 
and plunged into a moderate hot-bed, {hading them 
from the fun, they will take root, and afterward 
.fhould be treated as the layers. 
The feventeenth fort is an annual plant the feeds of 
it were fent me from Jamaica, where it grows natu- 
rally. This rifes with a very {lender twining ftalk 
four or five feet high, garniftied with triangular leaves, 
which are pointed. The flowers grow in clufters, fit- 
ting clofe to the ftalks, which are blue, and are fuc- 
ceeded by feeds like thofe of the fourth fort. This 
fort will not ripen feeds in England, unlefs the plants 
are brought forward on a hot-bed in the fpring, and 
afterward placed in a glafs-cafe, where they may be 
defended from cold. 
The eighteenth fort grows naturally in Jamaica, from 
whence the feeds were fent me by the late Dr. Houf- 
toun. This is one of the moft beautiful kinds, the 
flowers being very large, and of a fine Rofe colour. 
It rifes with a winding ftalk feven or eight feet high, 
which is garniftied with heart-fhaped leaves, ending 
in long fharp points, fitting upon very long foot- 
ftalks. The flowers alfo have long foot-ftalks, each 
fupporting two flowers, whofe empalement is divided 
deeply into five parts ; the feeds of this are large, and 
covered with a fine down. This is an annual plant, 
which is too tender to thrive in the open air in this 
country, fo the feeds fhould be fov/n on a hot-bed in 
the fpring, and the plants afterward treated in the 
fame manner as is directed for the eighth fort. 
The nineteenth fort grows naturally near the fea at 
Campeachy, from whence I received the feeds. This 
hath ftrong, fmooth, winding .{talks, which, ienfodfif 
roots at their joints, and are garniftied with arrow* - 
pointed leaves, whofe ears or lobes are obtufe ; the 
flowers are large, of a fulphur colour, and fit upon 
very long foot-ftalks, which proceed from the fide of 
the ftalks, each fupporting one flower, with a large 
fwelling empalement , thefe are fucceeded by large, 
fmooth, oval capfules, having three cells, each in- 
cluding one large fmooth feed. This is a perennial 
plant, whole ftalks- extend to a great diftance, and 
put out roots at the joints, whereby It propagates 
in. plenty ; but it is too tender to thrive in England, 
unlefs it Is preferved in a warm ftove, where it requires 
more room than can v/ell be allowed to one plant. It 
mttft be treated in the fame manner as tftff eighth fort. 
The twentieth fort grows naturally in Africa, from 
whence the feeds were fent to the royal garden at Pa- 
ris, and from thence I received it in 1730. This rifes 
with a {lender winding ftalk five or fix feet high, gar- 
niftied with heart-fhaped arrow-pointed leaves ■, the 
flowers ftand on long {lender foot-ftalks thefe are 
white, with purple bottoms. This fort may be treat- 
ed in the fame manner as the common great Convol- 
vulus. 
The twenty-firft fort grows naturally In Spain and 
Italy. This is an annual plant, which rifes about two 
feet high, with {lender twining ftalks, garniftied with 
oval leaves. The flowers are fmall, arid of a btaifh. 
colour, each foot-ftalk fupporting one flower of little 
beauty, fo is not often cultivated in gardens-. If the 
feeds of this fort are permitted to fcatter, the plants 
will rife in the lpring, and require no other culture 
but to keep them clean from weeds ; or if the feeds 
are fown in the fpring, where the plants are to re- 
main, they will {tower in June, and the feeds will 
ripen in Auguft. 
The twenty-fecond fort grows naturally in Sicily, and 
alfo in the iflands of the Archipelago. This hath a 
perennial root, which fends out many {lender ftift 
ftalks, twilling themfelves round the neighbouring 
plants, and rile five or fix feet high ; thefe are gar- 
niftied with leaves, which are divided into five or 
feven narrow lobes, and are of a foft texture, like 
fattin, Handing on fhort foot-ftalks. The flowers are 
produced from the fide of the ftalks upon long foot- 
ftalks, which fuftain two flowers of a- pale Rofe co- 
lour, with five ftripes of a deeper red. This fort 
creeps at the root, fb feldom produces feeds in Eng- 
land, but is propagated by fhoots taken from the old 
plants. The beft time for parting and tranfplanting 
thefe plants, is about the beginning of Mayy when 
they may be taken out of the green-houfe, add ex- 
pofed in the open air but the young plants which 
are feparated from the old ones, fhould be placed un- 
der a frame, and {haded from the fun till they have 
taken new root •, after which they mull be gradually 
hardened to bear the open air, to which they muft 
be expofed all the fummer ; but in autumn they muft 
be placed in the green-houfe, and may be treated in 
the fame way as the Canary Convolvulus before- 
mentioned. 
The twenty-third fort hath fame appearance of the 
twenty-fecond, and hath been fuppofed to be the fame 
fpecies by feme writers •, but I have cultivated both 
many years, and never have found either of them al- 
ter, fo that I make no doubt of their being diftinft 
plants. This fort hath a perennial root like the for- 
mer, which fends out many weak twining ftalks, rifl- 
ing about three feet high, twilling about the plants 
which ftand near it, or about each other, and if they 
have no other fupport, fall to the ground j thefe are 
garnifhed with leaves of different forms, feme are 
Ihaped almoft like thofe of Betony, being {lightly cut; 
on their edges, others are almoft heart-fhaped, and 
are deeply cut on the fides, and fome are cut to the 
midrib * they have a fhining appearance like fattin, 
and are foft to the touch, {landing on fhort foot-ftalks. 
The flowers are produced on the oppofite fide from 
the leaves, having very long foot-ftalks, each fuftain- 
ing two flowers of a pale Rofe colour, very like thofe 
. of 
