I 
K H O m - 
The firft fort is a common weed in moil of the low 
paftures and meadows in many parts of 'England 
where it is one of the moft troublefome weeds among 
the Grafs, fpreading itfelf over the whole ground, lb 
that in many of the water meadows, there is more 
of this plant than Grafs. It is an annual plant, which 
flowers the latter end of May, fo that the feeds ripen 
by the. time the Grafs of thefe meadows is mowed, 
and the feeds Icatter and fill the ground with young 
plants the following fpring ^ therefore, in order to 
deftroy it, the Grafs fhould be cut as foon as the 
flowers of this plant appear. 
It is well known, fo requires no defcription • and as 
it is never cultivated, fo it is mentioned chiefly to in- 
troduce the others : but here I muftobferve, that the 
Dutch carry on a trade with the feeds and feed-veffels 
of one fpecies of this genus to Germany, whofe feed- 
veffels appear very like thofe of this firft fort, they 
call it Semen Savadillos ; the ufe of it is to kill ver- 
min of every fort, efpecially bugs ; they boil a quan- 
tity of the feeds and capfules in common water, with 
which they wafh their- wainfcots, bedfteads, &c. 
where any of thefe infects are lodged, and it effedtu- 
ally deftroys them. 
The fecond fort was difcovered by Dr. Tournefort on 
the Tides of the Black Sea, growing in a fat foil and 
fhady fituation. The flower being fhaped like an 
Elephant’s-head, induced Fabius Columna to give 
the title of Elephas to the third fpecies, which he 
found growing naturally in the kingdom of Naples, ■ 
and Tournefort after him eftablifhed the genus with 
that title. The ftalks of this rife a foot and a half 
high ; they are hollow, four-cornered, and hairy, gar- 
nifhed with leaves placed oppofite, having fiiort foot- 
ftalks ; they" are about two inches long, and half an 
inch broad, crenated on their edges, hairy, and veined. 
The upper part of the ftalk is garnifhed with flowers 
growing oppofite from the wings of the leaves •, thefe 
have curved tubes, which divide into two lips ; the 
< under lip is an inch long, broad, and cut into three 
obtufe parts, the middle fegment being the broadeft ; 
the upper lip is like a helmet, and is longer than the 
lower. The flower is yellow, with a fpot of fille- 
mort on the lower lip, and the upper lip has two red 
fpots on the top the flowers have an agreeable fcent. 
The third fort grows naturally in the kingdom of Na- 
ples •, this is much like the former fort, but the pro 
bofcis of the flower is ereft, and the lower lip has no 
fpot. 
Thefe plants defpife culture, fo are with great difficulty 
kept in gardens $ they are biennial, fo are only pro- 
pagated by feeds ; thefe fhould be fown foon after 
they are ripe, otherwife they will not fucceed, nor 
will the plants bear removing, fo they fhould be 
fown where they are to remain, which fhould be in a 
moift rich foil and a fhady fituation : when the plants 
come up, they muft be thinned and kept clear from 
weeds, which is all the culture they require. If the feeds 
of thefe plants are permitted to fcatter, the plants will 
come up better than thofe which are fown by band, 
but they thrive belt amongft Grafs. 
RHIZOPHORA. Lin. Gen. Plant. 524. Mangles. 
Plum. Nov. Gen. 13. tab. 15. This is called Man- 
grove by the inhabitants of the Weft-Indies ; there 
are feveral fpecies of this kind, which grow in falt- 
water rivers both in the Eafi: and Weft-Indies, but as 
they will not grow upon land, it is needlefs to enu- 
'tnerate them here. 
R FI O D I O L A. Lin. Gen. Plant. 997. Anacampleros. 
Tourn. Inft. R. PI. 264. Rofe-root. 
The Characters are, 
It hath male and female flowers in different plants the 
male flowers have an empalement of one leaf , which is cut 
into four or five fegment s almoft to the bottom \ they have 
four obtufe petals, which are much longer than the em- 
palernent , and four neftariums , which are erebl and fhorter 
than the empalement , with eight awl-Jhaped flamina which 
are longer than the petals , terminated by obtufe fummits. 
They have four oblong acute germen without flyle or flig- 
ma , fo are abortive . The female flowers have the fame 
empalement as the male they have four obtufe petma - 
nent petals equal with the empalement , and four neftariums 
like the male-, they have four oblong acute -pointed germen 
fitting upon an ere ft flyle, crowned by obtufe fiigmas. The 
germen afterward become four horned capfules , compreffed 
on their inner fide, filled with roundijh feeds . 
This genus of plants is ranged in the ieventh fedtion 
of Linnaeus’s twenty-fecond clafs, which contains 
thofe plants whofe male and female flowers are upon 
different plants, and the male flowers have eight fta- 
mina. 
The Species are, ; 
1. Rhqdiola ( Rofea ) ftaminibus corolla duplo longio- 
ribus. Rofe-root with flamina twice as long as the petals. 
Anacampferos radice rofam fpirante major. Tourn. 
Inft. R. H. 264. Greater Orpine with a Rafe-fcented 
root. 
2. Rhodiola [Miner) ftaminibus corolla fere sequanti- 
bus. Rofe-root with flamina fcarcely equalling the length 
of the petals. Anacampferos radice rofam fpirante mi- 
nor. Tourn. Inft. R. H. 264. Smaller Orpine with a 
Rofe-fcented root. 
The firft fort grows naturally in the clefts of the 
rocks and rugged parts of the mountains of W ales, 
yorkfhire, and Weftmoreland. This has a very thick 
fiefhyroot, which, when bruifed or cut, fends out an 
odour like Rofes ; it has many heads, from whence 
in the fpring come out thick fucculent ftalks like thofe 
of Orpine, about nine inches long, clofely garnifhed 
with thick fucculent leaves of a gray colour, which 
are an inch long, and half an inch broad, indented 
on their edges toward the top, and are placed alter- 
nately on every fide the ftalk. The ftalk is termi- 
nated by a duller of yellowilh herbaceous flowers, 
which appear early in May ; the male flowers have 
ftamina twice the length of the petals. They have 
a very agreeable fcent, but are not of long conti- 
nuance. 
The lecond fort grows naturally on the Alps *, the 
roots of this are fmaller than thofe of the other fort, 
the ftalks are fmall, and not above five inches long ; 
the leaves are fmall, but fhaped like thofe of the other 
fort, and end with a purple point ; the petals of the 
flowers are purplifh, and the ftamina are but little 
longer than the petals. This flowers later than the 
other fort. I have cultivated both thefe plants in the 
fame foil above thirty years, and have never found ei- 
ther of them vary.- 
Thefe plants are prefer ved in the gardens of the cu- 
rious, for the fake of variety -, they are eafily propa- 
gated, either by cuttings or partrhg of the roots. If 
by cuttings, they fhould be planted the beginning of 
April, foon after they come out from the head •, if 
thefe are planted in a fhady border, and covered clofe 
down with a glafs, keeping them dry, they will put 
out roots in about fix weeks ; but the cuttings fhould 
be laid in a dry room at leaft a week before they 
are planted, that the wounds may be dried before 
they are planted, otherwife they are fubjedt to rot. 
If they are propagated by parting of the roots, that 
fhould be performed in the beginning of September, 
at v/hich time their ftalks begin to decay ; and if the 
flefhy parts of the roots are cut or broken, they fhould 
be laid to dry a few days before they are planted, for 
the fame reafon as the cuttings. Thefe plants require 
a fhady fituation and a dry undunged foil, in which 
they will continue many years. 
RHODODENDRON. Lin. Gen. Plant. 484. 
Chamasrhododendros. Tourn. Inft. R. H. 604. tab. 
373. Dwarf Rofe-bay. 
The Characters are, 
The flower has a permanent empalement cut into five feg- 
ment s the flower hath one wheel funnel-fhaped petal . , 
fpreading open at the brim it has ten fender flamina 
which decline, and are the length of the petals, terminated 
by oval fummits, and a five-cornered germen, fupporting a 
fender flyle the length of the petal, crowned by an obtufe 
fligma. The germen afterward becomes an ovtfl capfule 
with five cells, filled with fmall feeds , 
This 
