CORNFLOWERS AND KNAPWEEDS 327 



C. MACROCEPHALA (big-headed). Stem hollow, 3 feet hioh. Eadical 

 leaves large, oblong -lance -shaped, margins undulating; stem -leaves 

 narrower, margins continuing down stem. Flower-heads verv large, 

 y.-llow: involncral bract, witli jagged edg(^s : July. Perennial." Intro- 

 duced from Cjiucasus, 1S()5. 



C. MOXTAXA (mountain). :\Iountain Cornflower. Stem 2 feet high ; 

 sometimes branched slightly. Leaves cottony, lance -shaped, margins 

 continued down stem. Flower-heads large : ray-florets deeply cut into 

 four or five long slender teeth, blue : disk-florets purple : June to August. 

 Perennial. Introduced from Au'^tria, iodii Plate L57. There are 



them red, and in one called L(id>/ Florence IListing!^ they are creamy 



\ K\(;iM.NA (H.-igu.an). Stem -2 f(vt l.igh. L^.u.'s cvcred ^^ith 

 y down, piunately cut into egg-shaped segments. Flower-heads 

 :; involucral bracts fringiHl; June and July. Perennial. Introduced 

 Candia, 1710. This si)ecies is only half-hardy: all the others 



'. SI A\-i:(>Li.Ns (^wect-smelling). Yellow Sultan. Stem 20 inches 

 Lea\es broad, spoon - shaped, toothed; upper ones varying, 

 r-lieads yellow, fragrant; July. Annual. Introduced from tlie 

 t, 1083. 



Ccnhinra, are raised from seed, and x\ill Mieeeed with 



.o^\u wiiere tl,«y are to iloxAer. in little patches, of which only fixe or six 

 of tlie nu.^t robust plants sliould be left after thinning" out. The 

 perrnnials bear transplanting, and the seed of these may be sown in a 

 pan <n- in the border, the young plants afterwards removed x\heie 

 re.|uired. C. myv^ino should be sown in slight heat, and the seedhngs 

 hardened off before planting out. March or April is the best time for 

 •sowing with either class. C. Cyanv>^ is a good plant for sunny positions 

 in the wild-garden or on sandy slopes. It is one of the best of native 

 plants for the garden. 

 Description of (^cidiivmi iuu,}f(i,ui, the Mountain Cornfloxser is shown 



_ Plate 157. of the natural size. The fh'canr.f leaf is here well shown. 

 Fig. 1 is a .section through the flower-head: 2, a rav-floret : 3. a disk- 

 floret. Xote the difference in size of the incipient fruits in 2 and 3, the 

 former sterile, the latter fertile. 



