134 KEY AND FLORA 
3. T. pratense L. Rep Crover. Biennial or short-lived peren- 
nial. Stems spreading, branching, downy, 1-3 ft. long. Leaves long- 
petioled ; stipules large; leaflets oval to obovate, finely toothed, often 
with a dark triangular spot near the center. Flowers red or purple, 
in globose heads, erect in fruit. Calyx teeth bristle-shaped, hairy. 
Pod 1-8-seeded. Introduced from Europe and widely cultivated.* 
4. T. repens L. Wuitr Ciover. Perennial. Stems widely branch-, 
ing at the base, prostrate and creeping, nearly smooth, 6-12 in. 
long. Leaves long-petioled; leaflets oval, obovate, or obcordate, 
minutely toothed. Heads globose, long-peduncled. Flowers white, 
reflexed in fruit. Pod 3-4-seeded. Common about houses and in 
pastures.* 
5. T. hybridum L. Ausixe CLover. Perennial, consider: ably 
resembling No. 4, but the stems more upright and stouter. Leaflets 
varying from broadly ovate to ovate-lanceolate, mucronate or slightly 
notched, the margins fringed with hairs; stipules prolonged into 
bristle-like points. Flowers rose color and white, very fragrant. In 
fields and along roadsides. Introduced from Europe. 
6. T. carolinianum Michx. Carotina CLover. Perennial. Stems 
spreading or ascending, much-branched, downy, 6-10 in. long. Leaves 
short-petioled; leafiets small, obovate or obcordate, slightly toothed. 
Heads small, globose, on long peduncles. Flowers white, tinged 
with purple, reflexed in fruit. Pod 4-seeded. Common in waste 
places S.* 
7. T. procumbens L. Low Hor Ciover. Annual. Stem slender, 
erect or spreading, downy, 6-10 in. long. Leaves short-petioled; 
leaflets obovate or obcordate, finely dentate, the middle one distinctly 
stalked; stipules lance-ovate. Flowers yellow, reflexed in fruit. Pod 
1-seeded. Common on clay soil, in waste places. Naturalized from 
Europe.* 
XIII. MELILOTUS Hill. 
Annual or biennial herbs. Leaves petioled, of 3 leaflets. 
Flowers small, white or yellow, in dense axillary and terminal 
racemes. Calyx 5-toothed, the teeth nearly equal. Standard 
erect, wings and keel cohering. Stamens 10, diadelphous. 
Pod longer than the calyx, 1-4-seeded.* 
1. M. alba Lam. Metizorus. Biennial. Stem erect, branching, 
smooth or the young branches slightly downy. Leaflets oblong or 
oblanceolate, rounded or truncate at the apex, serrate; stipules small. 
Racemes long, slender, erect. Flowers white. Standard longer than 
the wings and keel. Pod ovoid, wrinkled, drooping, mostly 1-seeded, 
scarcely opening. Common as a weed and widely cultivated.* 
