C 4 ) j 
and is placed immediately under the flower, 
which is enclofed in it, as in a cup ; primrofes 
(primula) and rofes (rofa) have their calyxes of 
the Perianth kind. 2d, Involucre, which is a 
calyx, growing at a diftance from the flower. 
Moft flowers which have Involucres have alfo 
Perianths, as the primula genus. Thofe flen- 
der leaves, which grow at the bafe of the 
numerous flower-ftems of the polyanthos 
(which is a primula) are termed Involucres ; 
the fame in meadia dodecatheon, in parfley, 
apium, and all that tribe of plants which is 
termed umbelled. The plant called fool's 
parfley, asthufa, by eating of which, miftaking 
it for garden parfley, fome perfons have been, 
faid^to be poifoned, may be diftinguifhed from 
all other umbelled plants by the Involucres, 
which belong to the fmall umbels, and which 
confift of three long, narrow, pendulous leaves^ 
placed at the bottom of each umbel : thefe 
leaves are called partial Involucres; thofe which 
grow at the bafe of the whole collection ot 
umbels form what is termed the general In- 
volucre. 3d, Glume chiefly belongs to grafles, 
and confift s of one, two, three, or more valves, 
folding over each other like fcales, and fre- 
quently terminated by a long ftifF-pointed 
prickle, 
