Cytisus striatus, (Hill) Rothm. Cytisus grandiflorus, DC. Cytisus scoparius, (L.) Link

17. C. striatus (Hill) Rothm. View in CoL , Feddes Repert. 53: 149 (1944)

( C. pendulinus L. fil. , Genista striata Hill , Sarothamnus patens Webb , quoad descr.; inch Sarothamnus eriocarpus Boiss. & Reuter , 5. welwitschii Boiss. & Reuter ).

Erect, much-branched, 100-300 cm. Branches and twigs cylindrical, striate, usually 8- to 10-angled when young, often drying black; young branches sericeous or villous, later glabrescent and becoming leafless. Leaves solitary or sometimes fasciculate, those on lower branches 3- foliolate, petiolate, those on the middle and upper branches 3- or 1 -foliolate, sessile; leaflets 4-1 6 x 1-6 mm, ovate, elliptical to linear-lanceolate, glabrous and glaucous above, sericeous or villous beneath. Flowers solitary or in pairs, rarely in clusters of 3; pedicels as long as or up to twice as long as calyx. Calyx sericeous. Corolla yellow; standard 10-25 mm. Legume 18-35(-40) x 8-12 mm, straight or slightly curved, oblong-ovate to -elliptical, more or less inflated, densely hirsute, erect or semi-patent. Woods, hedges and scrub. • Portugal, W. & C. Spain. Hs Lu [Ga].

Extremely variable in dimensions of leaves and flowers, habit and indumentum.

18. C. grandiflorus DC. View in CoL , Prodr. 2: 154 (1825)

( Sarothamnus grandiflorus (DC.) Webb , S. virgatus Webb).

Erect or ascending, 200-300 cm. Older branches terete, striate; twigs virgate, 5- angled, glabrous. Leaves 1-foliolate on young twigs, 3-foliolate on older twigs, all sessile, glabrous, caducous; leaflets obovate to elliptic-lanceolate, obtuse or acute. Inflorescence leafy; flowers solitary or in pairs; pedicels slightly longer than calyx, with 3 minute bracteoles. Calyx glabrous. Corolla golden-yellow; standard 18-25 mm. Legume 20-45 x 8-12 mm, strongly compressed, straight or slightly curved, densely clothed with long white hairs, becoming black at maturity. Scrub. S. Spain, C. & S. Portugal. Hs Lu.

19. C. cantabricus (Willk.) Reichenb. fil. View in CoL in Reichenb. & Reichenb. fil., Icon. FI. Germ. 22: 15 (?1869)

( Sarothamnus cantabricus Willk. ).

Erect, 100-200 cm. Branches and twigs 5- to 8-angled and furrowed, glabrous. Leaves 1-foliolate, and sessile on young twigs; 3-foliolate and petiolate on older twigs. Leaflets obovate to lanceolate, the lateral shorter than the central, sparsely sericeousvillous or glabrous above, densely so beneath. Flowers solitary; pedicel twice as long as calyx. Calyx glabrous. Corolla yellow; standard 15-18 mm. Legume 30-50x6-8 mm, arcuate, compressed, covered with long white hairs, becoming black at maturity. Scrub and woods. • N. Spain, just extending to S. W. France. Ga Hs.

20. C. scoparius (L.) Link View in CoL , Enum. Hort. Berol. Alt. 2: 241 (1822)

( Sarothamnus scoparius (L.) Wimmer ex Koch ).

Muchbranched shrub, up to 200(-250) cm; branches erect, ascending or procumbent, green, usually leafy, 5-angled, glabrous, or sericeous when young. Leaves usually 3-foliolate, petiolate to subsessile, but 1-foliolate and sessile on young twigs; leaflets 6-20 x I*5-9 mm, elliptic-oblong to obovate, with appressed hairs or glabrous. Flowers axillary, solitary or in pairs; pedicels twice as long as calyx. Calyx glabrous. Corolla golden-yellow; standard 16—18(—20) mm. Legume 25-40(-70) x 8—10(—13) mm, oblong, strongly compressed, with brown or white hairs on the margin, otherwise glabrous, black at maturity. W., S. & C. Europe, extending northwards to S. Sweden and eastwards to W.C. Ukraine. AuBeBrCoCzDaGaGeHbHeHoHsHuItJuLuNoPoRm Rs (B, C, W) Sa Si Su [Az].

(a) Subsp. scoparius :

Branches erect or ascending, 150— 200(-250) cm; leaves and young twigs glabrous or sparsely sericeous. In = 46. Woods, heaths, dunes and mountain slopes; usually calcifuge. Throughout the range o f the species.

(b) Subsp. maritimus (Rouy) Heywood View in CoL , Proc. Bot. Soc. Brit. Is. 3: 176 (1959)

( Genista scoparia var. maritima Rouy ):

Branches procumbent with occasional erect or ascending branches from the centre of the plant up to 40 cm; leaves and young twigs densely sericeous. 2n = 46. Maritime cliffs. Coasts o fN. W. Europe. Plants of this subspecies from Britain, Ireland and the Channel Islands retain their characteristics in cultivation. Records from W. France, Germany and Corse require confirmation. A distinctive variant occurs in Denmark (Jylland) with ascending branches 50-60 cm, and sericeous, 1-foliolate leaves on young twigs. It remains constant in cultivation and may deserve recognition as a further subspecies. Intermediates between it and subsp. scoparius occur in Jylland due to hybridization following the introduction of the latter subspecies.