262 



Composite? Ca lendu la. 



TRIBE V. 



Leaves alternate, often spinescent. Involucral bracts usually 

 imbricate and prickly. Florets, in most genera, all tubular ; 

 tubs slender, ventricose. Lobes of the style with a swelling or 

 ring of hairs at their base 



37. CALENDULA. 



The peculiarity of this genus is the rayed flower-heads, the 

 ray-florets being female, and the disk-florets male. Only one 



species comes within our 

 province. The generic 

 name is derived from the 

 Latin calendce, in allu- 

 sion to the constant 

 flowering of the common 

 species. 



1. C. offi cin alis. 

 Common Marigold. 

 This familiar annual is 

 a native of the South of 

 Europe. Like many 

 other Composites it has 

 undergone considerable 

 modification in the 

 florets, forming the 

 double flower (fig. 147) 

 of florists. The bright 

 orange flowers are very 

 showy, in the latter 



Fig. 147. Calendula officinalis flore pjeno, ( nat. siae.) ^ 6 ^ J^ 1 LI J S * 



38. ARCTOTIS. 



South African plants bearing conspicuous orange -rayed 

 flower-heads. Involucral bracts numerous, imbricated, scarious 

 on the margin. Receptacled, pitted, studded with bristles be- 

 tween the florets. Achenes grooved, crowned with a pappus of 

 membranous scales. Name from ap/eros-, a bear, and ofo, an 

 ear, probably in allusion to the woolly leaves. 



1. A. speciosa, syn. A. 'breviscapa. A prostrate tufted 

 tomentose annual. Leaves entire or pinnatifid. Flower -heads 



