164 



plicated, obtuse: lip inferior three-cleft; lateral divisions u})riglit, as 

 it were the segments of the throat; the intermediate one hanging 

 down, small, prominent forwards at the base, roundish, emarginate: 

 the stamina consist of four subulate filaments, hid beneath the upper 

 lip of the corolla, of which two are a litte shorter: anthers somewhat 

 cordate: the pistillum is a four-parted germ: style filiform, in the 

 situation of the stamens : stigma two-cleft, sharp, slender, reflex : 

 there is no pericarpium : calyx cherishing the seeds in its bottom : 

 the seeds four, ovate-oblong, three-sided. 



The species chiefly cultivated are: 1. D. Virginiwnim, Virginian 

 Dragon's Head; 2. D. Caiiariciise, Canary Dragon's Head, or Balm 

 of Gilead; 3. D. Aiisti/acion, Austrian Diagons Head ; 4. D. Rui/s- 

 chiaiia, Hyssoji-lcaved Dragon's Head ; 5. D. Moldavica, Moldavian. 

 Dragon's Head, or Balm. 



There are other species that deserve cultivation. 



The first is a perennial plant. It rises with an upright stalk, near 

 three feet high. The leaves are about three inches long, and half an 

 inch broad, sessile; usually in pairs at each joint, but sometimes 

 there are three together. The flowers are purple, in terminating 

 spikes. It is a native of North America, flowering iVom July to 

 September. 



The second species is also a perennial plant, rising with several 

 stalks to the height of three feet or more, becoming woody at the 

 lower part; the leaves at each joint having three or five oblong, 

 pointed, serrate leaflets. — -The flowers come out in short thick spikes 

 on the top of the stalks; they are of a pale blue colour. It is a na- 

 tive of the Canary Islands, flowering at the same time as the first. 



The third has likewise a perennial root. The stalks are hairy, a 

 foot and half high, sending out several side-branches. The leaves 

 are hair^', linear, cut into three parts. The flowers terminating in 

 short whorled spikes, with some very narrow leaves (bractes) under 

 each whorl. It is a beautiful plant, growing naturally in Aus- 

 tria, &c. 



In the fourth the root is perennial. The stems about two feet 

 high, with two smooth linear leaves at each joint, about an inch 



