51)8 



ARBORETUM AND PBUTICETUM, 



TAUT 111. 



iv. Tubocytisus Dec. 



Derivation. From tubus, a tube, and cytisus ; in reference to the tubular shape of the calyx. 



Sect. Char. Calyx tubular, with the apex toothed-lipped. Thornless shrubs 

 (Dec. Prod., ii. p. 155.) 



A. Flowers wliitc or whttiik. 4 

 a 13. C. LEUCA'NTHUS Waldst. et Kit. The white-flowered Cytisus. 



Identification. Waldst. et Kit, 2. p. 141. t. 132. ; Dec. Prod., 2. p. 155. ; Don's 



Mill., 2. p. 156. 

 Engravings. Bot Mag., 1. 1438. ; and our fig. 288. 



Spec. Char., fyc. Stem erect. Branches round, and, as well 

 as the leaves, clothed with closely pressed pubescence. 

 Leaflets elliptic and acute. Flowers at the points of the 

 branches ; heads of flowers bracteated by two leaves. (Dec. 

 Prod., ii. p. 155.) A shrub, growing to the height of 3ft. 

 or 4 ft. in Croatia, in woods. Introduced in 1806, and pro- 

 ducing its yellowish white flowers in June and July. It 

 is very ornamental, and well deserves a place among other 

 species of the genus. Price of plants, in the London nurse- 

 ries, Is. 6d. each. 288 



B. Flowers purple. 

 -* 14. C. PURPU V REUS Scop. The purple-flowered Cytisus. 



Identification. Scop. Cam., No. 905. t. 43. ; Dec. Prod. 2. p. 155. ; Don's Mill., 2 p. liifi. 

 Engravings. Jacq. Aust. Append., t. 48. : Lodd. Bot. Cab., t. 892. : Bot. Mag., t. 1176.; and our 

 Jigs. 289, 290. 



Spec. Char., $c. Stems procumbent, twiggy. Leaves, calyxes, and legumes 

 glabrous. Leaflets oblong. Flowers axillary, solitary, on short pedicels. 

 (Don's Mill., ii. p. 156.) A procumbent shrub, a 

 native of Carniola,in exposed places. Introduced in 1792, 



230 







and flowering from May to August. 

 It seldom exceeds 1 ft. in height, but 

 is very ornamental on rockwork, or 

 when grafted on the laburnum, stand- 

 ard high. Of all the different species 

 of Cytisus, when grafted standard 

 high, this forms the most graceful 

 tree; and a plant of it covered with 

 its purple flowers, placed on a lawn, 

 or in a border near a standard of 

 Genista triquetra, covered with its 

 golden yellow flowers, will produce a very striking 

 effect. Plants, in the London nurseries, are Is. 6d. each ; 

 grafted standard high, they are from 2s. 6d. to 5s. : at Bollwyller, they 

 are 50 cents each ; and for two yeajs' seedlings, 4 francs for 25. 

 Variety. 



-* C. p. 2 flore dlbo Hort. has the flowers of a pure white. There is a 

 specimen of this in the London Horticultural Society's garden, and 

 another in the garden of Dr. Neill at Canon Mills. 



C. Flowers ye/ low. 

 ft 15. C. ELONGA X TUS IValdst.et Kit. The elongated Cytisus. 



Identification. Waldst. et Kit. Hung., 2. p. 200. t. 183. ; Dec. Prod., 2. p. 155. ; Don's Mill., 2. p. 155. 

 Engraving. Waldst. et Kit. Hung., t. 183. 



Spec. Char., $c. Sterns erect. Branches elongated and round ; young ones 

 hairy. Leaflets obovate, clothed beneath with closely pressed hairs. Flow- 

 ers lateral, usually in fours, on short pedicels. Calyxes hairy. (Dec. Prod., iL 



