LEGUMINOSAE. 107 
or less evident persistent stipules; small solitary ovoid buds 
usually concealed behind the leaf-cushion; small entire appar- 
ently simple subsessile leaves; moderately small yellow 
papilionaceous flowers in the upper axils; and small few-seeded 
legumes. 
I. Spiny. : G. germanica. 
Unarmed. 2. 
2. Erect: leaves glabrate. (Dyeweed). G. tinctoria. 
Prostrate: leaves silky beneath. G. pilosa. 
Urex,*.urze!,) “Fuzz.” 
Much-branched shrubs with light wood with minute ducts 
in an anastomosing flame-like pattern and fine medullary rays; 
moderate fluted twigs ending in spines; small continuous pith; 
small alternate pungent linear leaves; rounded small buds; yel- 
low perfect papilionaceous rather larger flowers distributed 
along the branches; and short few-seeded legumes. 
Flowers single. U. europaeus. 
Flowers double. U. europaeus plenus. 
Cytisus. Broom. 
Deciduous shrubs with) brown wood with small ducts in 
oblique or flame-like patterns and fine medullary rays; rather 
slender twigs; roundish or angular homogeneous pale pith; 
alternate raised small transversely elliptical or crescent-shaped 
leaf-scars with 1 bundle-trace; scarcely evident stipule-scars; 
small rounded or ovoid solitary buds with 2 or 3 exposed scales, 
often developirg into short leafy spurs the first season; stalked 
rather small digitate leaves with 3 sessile entire leaflets ;- rather 
large perfect papilionaceous flowers in axillary or terminal 
clusters; and small several-seeded legumes. 
1. Twigs prominently angled. C. scoparius. 
Twigs scarcely angled. 2. 
2. Twigs with appressed hairs. C. nigricans. 
Twigs with spreading hairs. 3. 
3. Leaflets with appressed hairs beneath. C. leucanthus. 
Leaflets with spreading hairs beneath. 4. 
