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will not be difficult to trace their characters 
of both clafs and order, Pentandria Digy'nia. 
Under this order are comprifed feven divi- 
fions. The umbelled tribe are collected un- 
der the character of their mode of inflorefcence, 
their florets having " five petals, above, and 
two-feeded." This divifion is again feparated 
into three parts, the firft diftinguifhed by the 
flower having an univerfal and partial invo- 
lucre ; that is, each collection of florets being 
furnifhed with an involucre, and all together 
being contained by one at their bafe ; fecond, 
with partial involucres, and no univerfal one; 
and the third, without involucre, either uni- 
verfal or partial. In the inveftigation of the 
further generic characters the pupil may be 
fomewhat perplexed by the fimilarity of terms 
ufed in the distinction of umbel-bearing plants 
and thofe of the clafs Syngenefia. In this 
clafs, which confifts of the compounded 
flowers, the term radiate is applied to thofe 
genera which have their florets of the circum- 
ference flat, and thofe of the centre tubular. 
In the umbellate tribe of plants the term ra- 
diate is made ufe of to diftinguifli the umbels 
which have the flowers of the circumference 
of a larger fize than thofe of the centre ; in 
of 
