948 



CYTISUS 



CYTISUS 



obtuse or acutish, pilose on both surfaces, ciliate, 

 J^-^in. long: fls. yellow, 1-3; calyx sparingly pilose; 

 standard broadly obovate, M m - broad: pod }^-%in. 

 long, pilose, with 3-4 seeds. May, June. S. Eu. B.M. 

 8230. L.B.C. 8:718. 



cc. Lvs. 3-foliolate (in Nos. 9 and 10 partly simple). 



D. Plant a prostrate shrub: fls. yellow or yellowish white. 

 (Trianthocytisus.) 



7. Ardoinii, Fournier. Prostrate shrub, about 1 ft. 

 high: branchlets grooved, pubescent: Ivs. long-petioled; 

 Ifts. 3, linear-oblong, acute, covered with spreading 

 hairs, J^-^in. long: fls. golden yellow, 1-3, crowded at 

 the end of short lateral branchlets, nearly ^in. long: 

 pod very villous, %in. long. April, May. S. France. 

 Moggridge, Flora of Mentone 58. Very handsome, but 

 tender. 



8. kewensis, Bean (C. Ardoinii x C. muUiflorus) . 

 Prostrate shrub : Ifts. 3, linear-oblong, clothed with short 

 soft pubescence, J^-^in. long: fls. yellowish white, 

 1-3, along slender branches, J^in. long. May. Origina- 

 ted at Kew. Gn. 60, p. 348; 69, p. 282; 73, p. 228; 75, 

 p. 273. G.M. 44:579; 51:355. G.W. 16, p. 610. Like 

 the preceding well adapted for rockeries or for forming 

 a close covering to the ground. 



DD. Plant an upright shrub: foliage scarce. 



E. Style slightly curved, shorter than keel: fls. white or 

 yellowish white. (Spartothamnus.) 



9. multifldrus, Sweet (C. dlbus, Link, C. Linkii, 

 Janka. Spdrtium multifldrum, Ait.). Shrub, to 3 ft., 

 with slender, erect, grooved branches pubescent at 

 first: Ivs. short-petioled, 1- to 3-foliolate; Ifts. oboyate- 

 oblong to linear-oblong, J^-^in. long, sparingly 

 appressed-pubescent: fls. axillary, 1-3, white, ^-J^in. 

 long: pod appressed-pubescent, usually 2-seeded. May, 

 June. Spain, N. Afr. Gn. 64, p. 251; 69, p. 92; 72, p. 

 276. G.M. 49:579. G.W. 5, p. 111. Var. incarnatus, 

 Sweet. Fls. white, slightly blushed. L.B.C. 11:1052 

 (as Spartium). 



10. preecox, Bean (C. multiflorus x C. purgans) . Shrub, 

 to 10 ft., with slender upright or arching branches: 

 branchlets grooved, pubescent at first: Ifts. usually 1, 

 sometimes 3, short-petioled, oblanceoiate or linear- 

 spatulate, silky pubescent, %-%in. long: fls. 1-2, 

 yellowish white, very numerous along the slender 

 branches, nearly )^in. long: pod appressed-pubescent, 

 about 1 in. long, usually 2-seeded. May. Of garden 

 origin. G.C. III. 29:41. Gn. 56, p. 37; 65, p. 438; 69, 

 p. 318. G.M. 44:581; 52:183. M.D.G. 1903:265. 

 G.W. 3, p. 221. Var. dlbus, Smith. Dwarf er, more 

 pendulous: fls. white. Gn. 75, p. 192. Var. luteus, 

 Smith. Dwarf: fls. yellow. This hybrid is one of the 

 most floriferous of all brooms. 



11. fflipes, Webb (Spartocytisus filipes, Webb). 

 Shrub, with slender, angulate, thread-like branches: 

 lys. slender-petioled, 3-foliolate, nearly glabrous; Ifts. 

 linear-lanceolate: fls. axillary, 1-2, fragrant, pure white; 

 wings much longer than the keel. Feb.-May. Tene- 

 riffa. As C. palmensis, Hort., in the American trade. 



EE. Style longer than keel, spirally incurved: fls. bright 

 yellow or partly crimson, rarely pale, large. (Saro- 

 thamnus.) 



12. scoparius, Link (Sarothdmnus scoparius, Wimm. 

 Spdrtium scopdrium, Linn.). SCOTCH BROOM. Shrub, 

 to 10 ft., with erect, slender branches: Ivs. short- 

 petioled, 1-3-foliolate; Ifts. obovate or oblanceoiate, 

 sparingly appressed-pubescent, %-%'m. long: fls. 

 usually solitary, %in. long; calyx and pedicels nearly 

 glabrous: pod brownish black, glabrous, villous only at 

 the margin. May, June. Cent, and S. Eu. G. 25: 169. 

 The tops are used for their sedative and diuretic prop- 

 erties. In Germany the fls. also are used medicinally. 

 Var. Andreanus, Dipp. (Genista Andredna, Puissant). 



Fls. yellow with dark crimson wings. R.H. 1886:373. 

 Gt. 40:1342. R.B. 19:129. J.H. III. 32:462. A beau- 

 tiful and striking variety. Var. albus, Loud. (var. 

 pdllidus, Hort. var. ochroleucus, Zabel., var. sul- 

 phureus, Arb. Kew). With yellowish white or pale 

 yellow fls. Gn. 61, p. 299; 65, p. 375. G.M. 44:580. 

 Var. pendulus, Arb. Kew (C. grandiflorus, Hort., not 

 DCJ C. cantdbricus, Hort., not Willd.). With slender 

 pendulous branches. There is also a variety with double 

 fls. All the vars. are more tender than the type. 

 The Scotch broom, C. scoparius, has become established 

 in this country, as a naturalized plant, in waste places 

 from Nova Scotia to Va.; and it is also reported from 

 Vancouver Isl. It is also recommended by landscape 

 gardeners for covering raw and broken places. Its 

 yellow fls. and nearly bare sts. make a unique combina- 

 tion in the American landscape. Even when it kills 

 to the ground in winter, it throws up its sts. again in 

 the spring. 



BB. Fls. in terminal racemes, sometimes umbel- 

 like, yellow: branches very leafy. 



c. Foliage deciduous: branches terete: racemes very long 

 and slender. (Phyllocytisus.) 



13. nigricans, Linn. (Lembdtropis nigricans, Griseb.). 

 Shrub, 2-4 ft., with erect, appressed-pubescent 

 branches: Ivs. long-petioled; Ifts. obovate or oblong- 

 obovate, glabrous above, appressed-pubescent beneath, 

 J/-l in. long: racemes very long and slender, 3-8 in. 

 long. June, July. Germany, N. Italy, Hungary. 

 L.B.C. 6:570. B.R. 10:802. B.M. 8479. R.B. 26:3. 

 Var. elongatus, Borkh. (var. longespicdtus, Hort.). 

 Blooming again in fall at the top of the elongated fruit- 

 ing racemes. R.H. 1891, p. 149 (as var. Carlieri), 



cc. Foliage persistent: branches grooved. (Teline.) 

 D. Lvs. distinctly petioled, obovate or obovate-oblong. 



E. Racemes nearly capitate, 3-9-fld., at the end of short 

 lateral branchlets. 



14. monspessulanus, Linn. (C. cdndicans, DC. 

 Genista cdndicans, Linn.). Shrub, to 10 ft.: branches 

 villous-pubescent when young: Ivs. short-petioled, 

 usually glabrous above, pubescent beneath; Ifts. obo- 

 vate or obovate-oblong, mucronulate, M~Min. long: 

 racemes 3-9-fld., short, leafy at the base; fls. fragrant, 

 bright yellow: pod rufous- villous. May, June. Medit. 

 region, Canary Isls. W.D.B. 1:80 (not good). 



EE. Racemes longer, 6- to many-fld., secund, terminal and 



lateral. 



F. Petioles %in. long or shorter; Ifts. usually obovate, 

 less than }4in. long. 



15. canariensis, Kuntze (Genista canariensis, Linn.). 

 GENISTA of florists. Fig. 1201. Much-branched shrub, 

 to 6 ft., with villous-pubescent branches: Ifts. cuneate, 

 obovate or oblong-obovate, rounded at the apex, 

 pubescent on both sides, %-%in. long: racemes usually 

 many-fld., dense and rather short; fls. fragrant, bright 

 yellow. May-July. Canary Isls. A.F. 6:802. R.B. 

 26:229. Var. ramosissimus, Briquet (C. ramosissi- 

 mus, Poir. C. Attleydnus, Hort.). Lfts. very small, 

 glabrous above: racemes short, but numerous. L.B.C. 

 13:1201. B.R. 3:217. 



16. racemosus, Nichols., not Marn. (Genista formosa, 

 Hort.). Fig. 1202. Shrub, to 6 ft. : branches pubescent : 

 Ivs. rather long-petioled; Ifts. oblong-obovate, mucronu- 

 late, M-% m - long, silky pubescent on both sides: 

 racemes elongated, many-fld., secund and rather loose, 

 2-4 in. long. Probably of garden origin and hybrid 

 between C. canariensis and C. maderensis var. magni- 

 foliosus. A. F. 6:802; 13:1136. F-E. 9:431. Better 

 florists' plant than the last; much grown as a pot- 

 plant and forced for early spring and Easter. Var. 

 Everestianus, Rehd. Fls. of a deeper shade of yellow, 

 very free-flowering. R.H. 1873:390. 



