266 Composites Cen taurea. 



G. depressa is a blue-flowered branching species about 18 

 inches high ; and G. moschdta, Sweet Sultan, and G. Amberboi, 

 Yellow Sultan, are Eastern species, the latter with pale yellow 

 and the former with purple or white agreeably scented flower- 

 heads. These two species are also sold under the name Amber- 

 boa. 



Perennial Species. 



3. C. Babylonica (fig. 150). This attains a height of 6 feet 

 or more, and is clothed with a white cottony down; Flower- 

 heads yellow, appearing in July. Levant. 



4. C. Raguslna. This is a frutescent species with silver- 

 white pinnate foliage, now very common in gardens, where it is 

 employed for contrasting with bright-flowered bedding plants. 

 The yellow flower-heads are of medium size and very pretty. 

 But it is for the foliage mainly that this and some allied 

 species are cultivated. Amongst these we may mention, G. 

 dealbata ; C. candidissima, syn. C. Cineraria, with leathery 

 pinnate leaves having a large terminal rounded lobe ; and G. 

 Glementei. Other perennial species occasionally seen are G. 

 macrocephala with simple stems and immense solitary yellow 

 flower-heads ; and (7. orientalis, a more branching plant with 

 yellow flower-heads. 



A few other species of this group worthy of a place in a large 

 garden are: Gdrthamus tinctorius, Safflower, a rigid erect 

 annual with leafy involucres and orange-red florets ; Gdrduus 

 Maridnus, Blessed Thistle, a more familiar plant, having spiny 

 leaves veined with white and clrooping purple flower-heads ; 

 Sonchus macrdnthus, Onopordon Acdnthium, 0. horridum, 

 and 0. Tauricum, and Gdrduus dfer, perennials of large size, 

 prickly foliage, and large purple flower-heads. 



SUB-ORDER II. LabiatiflorsD. 



Fertile or unisexual florets 2-lipped. We have no really 

 hardy species belonging to this division, but there are two or 

 three Chilian species of recent introduction which may be re- 

 garded as nearly so. Mutisia decurrens and M. speciosa are 

 climbing plants with pinnatifid leaves terminating in a tendril, 

 aud orange or red flower-heads on long peduncles. Proustia 

 pyrifolia, another climbing species, is remarkable for its beau- 

 tiful rosy pink pappus. 



