3 o The VEGETABLE SYSTEM. 
country name in another language. It rifes two feet and a half high. 
The Stalk is tender and branched. The Leaves are of a very fin<r 
Grals green ; and the Flowers are of a beau'.iful Violet blue. 
2. OVAL FAIR WEED. 
Plate 6 . Fig. 2. 
Charadler of the Species. Allionia incarnata. 
The Leaves are oval, with one half running farther down 
the Footftalk than the other. The Cup is cut very 
deeply into five Segments. 
Fig. 2 . a b. 
This is a biennial, native of Spain; a Plant of two feet high ; flower- 
ing in May and June. The Stalk is tough, and of a blueifh colour. 
The Leaves are of a flrong blue-green. The Flowers are of a very de- 
licate pale crimfon. 
I r mull be eafily feen that this Genus approaches very nearly to 
the preceeding; but they cannot be joined. Difference in degree, be it 
ever fo great, can never conftitute a juft diftindtion ; but difference in 
number, be it ever fo little, fo long as it is fixed and certain, may. 
There is alfo a mark of difference in the Seeds,, but we do not fend 
the ftudent fo far ; nor delay him fo long for a genuine character : in 
Pinkweed, the Seeds are hairy at the top; in Fairweed, they are 
fmooth. This is mentioned to confirm the propriety of keeping the 
two Genera diftindt; but the obvious charadter in the Flowers is fufR- 
cient to eftablifh it. 
GENUS VI. 
FEVERWORT. 
DORSTENIA. 
Charafler of the Genus. 
The Head is flat, and compofed of many Flowers ; the 
general Cup is entire, flat, and undivided at the Edge. 
Plate 7. o. a b. 
i. HEART 
