INTRODUCTION TO BOTANY. 
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Head. 
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. 
Involucrated, involucratum . Gomphrena globosa, Jasione 
montana. PL 7, fig. 7. 
Compound 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, Beilis, Chrysanthemum. 
Flosculous, flosculosa. All the flowrets tubular, both in 
the centre and the circumference, Carduus, Centaurea, 
Cynara. 
Semiflosculous, semiflosculosa , ligulata. All the flowrets 
ligulate. Taraxacum officinale, Lactuca, Sonchus. 
f Open, aperta . The involucrum open, so that all the 
flowrets are visible. Carlina, Hieracium, Helianthus and 
the other composite, 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. 
If 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-flowered, pauciflora. Knautia. 
Many-flowered, multiflora . 'Helianthus annuus, Eu- 
phorbia, Ficus, Dorstenia. 
Disk, Discus. The flowrets composing the central part 
of a compound flower. 
Rays, Radii. The flowrets composing the circumference 
of a compound flower* 
