THE GLADIOLUS. 183 



sometimes does well planted out in the spring, but is infe- 

 rior in beauty to the fine hybrids of G. Gandavensis. 



G. concolor. A pretty species, with yellow flowers, 

 whictuare fragrant towards evening. The flowers vary in 

 number from two to eight, and are produced on the same 

 side of the spike. 



G. viperatus. A singular plant, with greenish - gray 

 flowers, with brown and dark stripes. The species is very 

 desirable from the peculiar color and the fragrance of the 

 flowers. 



G. Colvelli. A fine hybrid, produced in 1823 by cross- 

 ing G. concolor with G. cardinalis, and still maintaining its 

 place in collections. The flowers are scarlet, marked with 

 purple, produced on a close spike, and are fragrant. It 

 requires the same treatment as its parents. 



We may also mention as desirable G. alatus, Algoensis, 

 and Namaquensis (sometimes considered varieties of ala- 

 tus), brevifolius, trichonemifoUus,tristis, Watsonius, recurvus, 

 Millerii, gracilis, edulis, and cuspidatus. 



All these could probably be grown in this country under 

 the frame-culture mentioned in Chapter X., and would 

 well repay the care required. Most of them are moder- 

 ately hardy, and in the greenhouse should have a cool, airy 



