KKY TO THK HROO.MS AM) COKSi; 11.") 



KKY TO THE BROOMS AND GORSE IN CULTIVA- 

 TION, INCLUDING THOSK IX HOTHOUSKS 

 NORTH OR IN THE OPEN SOUTH 



* Flowers along the sides of branches not in decided clusters, either 



solitary or '2 or :> in a cluster. (A.) 

 A. Flowers yellow ; leaves deciduous. (B.) 



B. Pods hairy on the margins, smooth on the sides, 1-2 inches 

 long; branches angled; erect, 5-10 feet. SCOTCH BROOM 

 (128) Cytisus srnpanus. 



B. Pods hairy all over, 1 inch long; branches round; blades nf 

 leaves hairy, |-| inch long. HAIRY BROOM (130) Cytisus 

 hirsiitus. 



A. Flowers white ; tender North. (C.) 



C. Branches slender but not thread-like, grooved ; erect, to 3 feet. 

 PORTUGAL BROOM Cytisus albus. 



C. Branches thread-like and angulate Cytisus fi'lipes. 

 C. Branches long, slender, pubescent, round, not angulate or 

 grooved; shrub to 12 feet; leaves all 3-bladcd. PROLIFEROUS 

 LABURNUM or TAOASASTE Cytisus prolitVrus. 



A. Flowers pink to purple ; procumbent shrub frequently grafted on 

 an erect stem to form a weeping plant ; tender North. PURPLE 

 CYTISUS (131) Cytisus purpiireus. 



* Flowers in rounded terminal heads, yellow or brownish when fad- 



ing, nearly 1 inch long, July, August; pod hairy, 1-1 inches Ion-; 

 branches round and hairy; blades |-1 inch long; hardy to Wash- 

 ington. CLUSTER-FLOWERED LAHURNUM Cytisus capitatus. 



* Flowers yellow in elongated terminal clusters. (D.) 



D. Leaves evergreen ; branches grooved ; hardy only South. (E.) 

 E. Blades widening towards tip, wedge-shaped. (F.) 



F. Blades f-f inch long, pubescent beneath. Cytisus candicans. 

 F. Blades i-J inch long, scabby beneath. Cytisus madere"nsis. 

 F. Blades i-f inch long, pubescent on both sides; flowers in 



one-sided clusters. (G.) 



G. Racemes shortened ; blades usually under % inch long 

 (the Genfsta of florists). YELLOW or FLORISTS' GENISTA 

 (132) Cytisus canarie"nsis. 



G. Racemes longer, 3-5 inches long; blades usually over 

 \ inch long. A hybrid of garden origin and better than 

 the last. RACEMED CYTISUS Cytisus racemdsus. 

 E. Blades linear. '-1 inch long with rolled edges; to 3 feet. NAK- 



RO\V I5LADED CYTISUS (133) CytisUS lillifoliUS. 



