VOL. II.] 



PEA FAMILY. 



271 



i. Genista tinctoria L/. Dyeweed or Greenweed. 

 Woad-waxen. Base Broom. (Fig. 2062.) 



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



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

 cumbent, the flowering ones erect, stiff, i-2 high, branched 

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

 late or elliptic-lanceolate, > / -i> / long, glabrous or with 

 scattered hairs, acute at the apex, narrowed at the base, en- 

 tire, shining; stipules none; racemes numerous, terminal, 

 i / -2 / long, few-flowered; bracts ovate-lanceolate, acute; 

 flowers yellow, nearly sessile, about 6 // long; calyx bracteo- 

 late at the base, its 3 lower teeth narrower than the 2 upper; 

 pod about i' long, flat, glabrous. 



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

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

 mer. Known also as Green-Wood, Dyer's-broom, Dyer's-green- 

 weed, Dyer's-whin and Alleluia. 



9. CYTISUS 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, the teeth short; standard ovate or 

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

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

 oblong or linear, pubescent or glabrous, several -seeded ; seeds strophiolatc. [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. 



i. Cytisus scoparius (L. ) Link. Broom. Green or Scotch Broom. 

 Hagweed. (Fig. 2063.) 



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



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



Sarot/iamnusscopariusWimm.; 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, $"-$" 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, 3 // -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, Massachusetts to Delaware and Virginia. Also 

 at Shelburne, Nova Scotia, and on Vancouver Island. Adventive 

 or naturalized from Europe. Bannal, Besom. Summer. 



10. MEDICAGO 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, 

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

 standard obovate or oblong; wings oblong; keel obtuse. Stamens diadelphous, the i op- 

 posite 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, inde- 

 hiscent, i-few-seeded. [Greek, Medike, from Medea, whence the Medic, or Lucerne was 

 derived.] 



About 50 species, natives of Europe, Asia and Africa. 



