194 VARIETIES OF BRACTS.—INVOLUCRE, 
(fig. 398), there are two involucres, one at the base of the primary 
divisions of the floral axis or general umbel, a ; and another at 
Fic. 397. Fic. 398. 
Fiy. 397, Staminate or male catkin of the Hazel ( Corylus A vellana), showing 
a number of scaly bracts between the flowers.——Fig. 398. Compound 
umbel of the Carrot (Daucus Carota). a. General involucre. 6, 6. Partial 
inyolucres or involucels. 
the base of each of the partial 
umbels or umbellules, 6b, 6 ; 
the former is then called the 
general involucre; and each of 
the latter an involucel or par- 
tial involucre (see page 208). 
In plants of the natural order 
Composite, such as the Mari- 
gold (fig. 399), Artichoke, 
Chamomile, and Daisy ; and 
of some of the allied orders, a 
somewhat similar arrangement 
of bracts takes place, and the 
name of involucre is also ap- 
plied in these cases. In the 
involucres of the Compositze 
there are frequently two or 
three rows of bracts thus over- 
lapping one another ; the con- 
stituent bracts of these latter 
i involucres have been termed 
Mi day, showing the flowers enclosed in Prylaries. Sometimes the 
an involucre. bracts of an involucre grow 
together at their bases, and 
form ultimately a sort of cup-shaped body surrounding the 
fruit, as the cup of the Acorn (fig. 400), and the husk of the 
