147 



* 



The characters are: that the calyx is a one-leafed perianthium, 

 bell-form, short, obtuse at the base: mouth two-lipped; upper-lip 

 two-cleft, acuminate; lower three- toothed: the corolla is papiliona- 

 ceous: standard ovate, rising upwards, sides reflex: wings the length 

 of the standard, straight, obtuse: the keel somewhat bellied, acumi- 

 nate: the stamina consist of diadelphous filaments, (single and nine- 

 cleft) rising upwards: anthers simple: the pistillum is an oblong 

 germ: style simple, rising upwards: stigma obtuse: the pericarpium 

 is an oblong legume, obtuse, attenuated at the base, stiff: the seeds 

 few, kidney-form, compressed. 



The species are: 1. C. Laburnum, Laburnum; 2. C. sessilifblium t 

 Common Cytisus; 3. C.hirsutus, Hairy or Evergreen Cytisus. 



The first has a large upright tree-stem, branching into a full- 

 spreading head, from ten to twenty feet high, having smooth greenish 

 branches, trifoliate, oblong-oval entire leaves, on long slender foot- 

 stalks; and from the sides of all the branches numerous yellow flowers 

 collected in long. spikes, hanging loosely downward; appearing in 

 May. It is a native of Switzerland. 



The varieties are: theCommon broad-leaved; the Narrow-leaved; 

 Long-spiked, having very long pendulous spikes of flowers; the 

 Short-spiked, having short, roundish, thick spikes of flowers; and the 

 Variegated-leaved Laburnum. 



The second species rises with a woody stalk, putting out many 

 branches, covered with a brownish bark: the leaflets are obovate, 

 ternale, on very short petioles: the flowers in close short terminating 

 racemes, of a bright yellow colour: it rises to the height of seven or 

 eight feet, and becomes very bushy. It is a native of the South of 

 Europe. 



The third has a soft shrubby stalk, dividing into many branches, 

 which grow erect, and frequently rise to the height of eight or ten 

 feet: the stalks, branches, and leaves are very hairy; the leaves are 

 ternate, ovate, and placed closely on the branches : the flowers 

 come out from the side of the slalk in short racemes, and are of a 

 pale yellow, appearing in June. It is a native of the South of 

 Europe. 



