DIFFERENT KINDS OF CALYX,. 245 



eluding their urn-shaped base; the two- 

 oreen bristly ones which enfold the bud % 

 in Glauclum Ititeum, Fl. Brit. Engl Bot. 

 t. 8 ; the tubular part, comprehending the 

 scales at its base, in the Pinks, t. 61, 62, 

 or the globular scaly cup in Centaurea, 

 t. 56. The Tulip, t. 63, is a naked flower, 

 having no calyx at all. 



This part is of an infinite variety of 

 forms in different genera, being either 

 simple or compound, divided or undivided, 

 regular or irregular. In some instances it 

 is permanent till the fruit is ripe, in others 

 it falls even before the flower is well ex- 

 panded. 



Some genera have a double perianthium, 

 as Malva, t. 67 1, or even a triple one, as 

 Scabiosa, t. 1311. 



I. Itwolucrum. Involucre of Professor Mar- 

 tyn ; but I generally retain the Latin ter- 

 mination. This is remote from the flower, 

 and can scarcely be distinguished clearly 

 from a Br acted. The term was first 

 adopted by Linnaeus, at the suggestion of 

 his friend Artedi, in order to distinguish 

 8 



