INTRODUCTION TO BOTANY. 115 
Heap. 
Capitulum, Glomus, Glomerulus, Corymbus Pliny, Caput 
florum,—cephalum. Flowers collected into a ball, and 
so close together that at a distance they might be taken 
for a single flower. 
Naked, Capitulum nudum. Cephalanthus. : 
Tnvolucrated, zmvolucratum. Gomphrena elebosa, Jasione 
montana. PI. 7, fig. 7. 
ComMPouND FLOWER. 
Calathide, Flos compositus absolute compositus, Antho-= 
dium, Cephalanthium, Calathidis. Sessile flowers, or 
nearly sessile, upon a clinanthe, surrounded by an involucrum. 
Radiated, Calathidis radiata. Having tubular flowrets 
in the centre, and ligulate flowers at the circumference. 
Calendula, Helianthus, Bellis, Chrysanthemum. 
Flosculous, flosculosa. All the flowrets tubular, both in 
the centre and the circumference, Carduus, Centaurea, 
Cynara. 
Semiflosculous, semzflosculosa, ligulata. All the flowrets 
ligulate. ‘Taraxacum officinale, Lactuca, Sonchus. 
{ Open, aperta. ‘The involucrum open, so that all the 
flowrets are visible. Carlina, Hieracium, Helianthus and 
the other compositze, Scabiosa, Dorstenia. 
Half open, semi-aperta. "The involucrum brought partly 
over the flowers so as to hide them in some degree. Am- 
bora. ; 
Closed, clausa. ‘The involucrum brought entirely over 
the flowers, so as to leave only a very small opening, and 
thus hiding them entirely. Ficus. 
4 One-flowered, uniflora. Echinops. ‘This is considered 
as a compound flower from the analogy of its other parts 
to those of compound flowers in general. 
Few-fiowered, pauciflora. Knautia. 
Many-flowered, multifiora. Helianthus annuus, Eu- 
phorbia, Ficus, Dorstenia. 
Disk, Discus. The flowrets composing the central part 
of a compound flower. : 
Rays, Radi. The flowrets composing the circumference 
of a compound flower, 
Ine 
