350 



FABACEAE. 



Vol. II. 



I. Genista tinctoria L. Dyeweed or Greenweed. 

 Woad-waxen. Base Broom. Fig. 2466. 



Genista tinctoria L. Sp. PI. 710. 1753. 



Branching from the base, not thorny, the sterile shoots de- 

 cumbent, the flowering ones erect, stiff, l°-2° high, branched 

 above, slightly pubescent. Leaves i-foliolate, sessile, lanceo- 

 late or elliptic-lanceolate, i'-ii' long, glabrous or with scat- 

 tered hairs, acute at the apex, narrowed at the base, entire, 

 shining; stipules none; racemes numerous, terminal, I'-a' long, 

 few-flowered; bracts ovate-lanceolate, acute; flowers yellow, 

 nearly sessile, about 6" long; calyx bracteolate at the base, its 

 3 lower teeth narrower than the 2 upper; pod about i' long, 

 flat, glabrous. 



On dry hills, Maine and Massachusetts to eastern New York. 

 Naturalized from Europe. Native also of northern Asia. Sum- 

 mer. Known also as wood-wax, green-wood, dyer's-broom. dyer's 

 green-weed, dyer's-whin and alleluia. 



9. CYTISUS [Tourn.] L. Sp. PI. 739. 1753. 



Shrubs, often stiff or spiny, with 3-foliolate or i-foliolate leaves, and showy clustered 

 flowers, mainly in terminal racemes. Calyx 2-lipped, campanulate, the teeth short; standard 

 ovate or orbicular ; wings oblong or obovate ; keel straight or curved. Stamens monadelphous ; 

 anthers alternately larger and smaller. Ovary sessile, many-ovuled ; style incurved. Pod flat, 

 oblong or linear, pubescent or glabrous, several-seeded ; seeds strophiolate. [From Cythrus, 

 one of the Cyclades, where the first species was found.] 



About 45 species, natives of Europe, western Asia and northern Africa, the flowers very slightly 

 different from those of Genista. Type species: Gytisus hirs-utus L. 



I. Cytisus scoparius (L.) Link. Broom. Green or 

 Scotch Broom. Hagweed. Fig. 2467. 



Spartium scoparium L. Sp. PI. 709. 1753. 



Cytisus scoparius Link, Enum, Hort. Berol, 2 ; 241, 1822, 



Sarothamnus scoparius Wimm. ; Koch, Syn. Fl. Germ. 152. 1837. 



Stiff, wiry, 3°-5° high, much branched, nearly glabrous. 



Branches elongated, straight, nearly erect, angled ; lower leaves 



petioled, 3-foliolate, the leaflets obovate, acute, or mucronate- 



tipped, 3"-s" long, entire, narrowed at the base ; upper leaves 



sessile, often i-foliolate; stipules none; flowers bright yellow, 



nearly i' long, in elongated terminal leafy racemes; pedicels 



solitary or 2-3 together, z''~5" long; pod flat, glabrous on the 



sides, but ciliate on the margins, i'-2' long; style slender, at 



length spirally curved. 



In waste places. Nova Scotia to Massachusetts, Delaware and 

 Virginia. Also in California and on Vancouver Island. Ad- 

 ventive or naturalized from Europe. Bannal. Besom. Summer. 



10. MEDICAGO [Tourn.] L. Sp. PI. 778. 1753. 



Herbs (a single shrubby species in southern Europe), with small 3-foliolate leaves, and 

 small yellow or violet flowers in axillary heads or racemes. Leaflets commonly dentate, pin- 

 nately veined, the veins terminating in the teeth. Calyx-teeth short, nearly equal ; standard 

 obovate or oblong; wings oblong; keel obtuse. Stamens diadelphous, the i opposite the 

 standard separate from the other 9; anthers all alike. Ovary sessile or nearly so, i-several- 

 ovuled ; style subulate. Pod curved or spirally twisted, reticulated or spiny, indehiscent, l-few- 

 seeded. [Greek, Medike, from Medea, whence the Medic, or Lucerne, was derived.] 



About 50 species, natives of Europe, Asia and Africa. Type species : Medicago sativa L. 



Perennial : flowers violet, conspicuous. i. M. sativa. 

 Annual ; flowers bright yellow, small. 



Pod I -seeded, curved, not spiny. 2 M. lupulina. 

 Pod several-seeded, spiny on the edges, spirally twisted. 



Pod loosely coiled, not furrowed on the edge. 3. M. hispida. 



Pod densely coiled, its edge furrowed. 4. M. arabica. 



