180 PABACEAE. 



1. Trifolium repens L. Sp. PI. 7§7. 1753. 



Perennial, glabrous or with a few scattered hairs, the branches often 

 rooting at the nodes, 1-3 dm. long. Leaves long-petioled ; stipules ovate- 

 lanceolate, membranous, acute, 4-12 mm. long; leaflets short-stalked, obovate, 

 emarginate or oboordate, broadly euneate at the base, denticulate, 8-20 min. 

 long; heads long-pedunoled; flowers 7-12 mm. long; pedicels 2-5 mm. long, 

 finally reflexed; corolla 2-3 times as long as the calyx; calyx-teeth acuminate, 

 somewhat shorter than the tube; pod about 4-seeded. 



Wayside ditches and dooryards, New Providence, at Nassau : — Bermuda ; Cuba ; 

 Jamaica ; naturalized throughout temperate North America. Native of the Old 

 World.' Whitb Clovek. 



2. Trifolium pratense L. Sp. PI. 768. 1753. 



Perennial, pubescent, 1.5-6 dm. high. Leaves long-petioled; stipules ovate, 

 strongly veined, subulate-tipped, 12-20' mm. long; leaflets short-stalked, oval, 

 oblong or obovate, narrowed at base, hardly euneate, obtuse and sometimes 

 'emarginate at the apex, often dark-spotted near the middle, finely denticulate, 

 1-3.5 cm. long; heads globose or ovoid, rarely slightly peduncled, about 2.5 cm. 

 long; flowers red (rarely white), about 12 mm. long, remaining erect in fruit; 

 calyx sparingly hairy, its subulate teeth shorter than the corolla. 



Dooryard, New Providence at Nassau : — Bermuda ; Cuba. Widely naturalized 

 in temperate North America. Native of the Old World. Eed Cloveb. 



5. INDIGOFERA L. Sp. PI. 751. 1753. 



Herbs, or rarely shrubs, often canescent with hairs affixed by the middle, 

 with odd-pinnate leaves, small stipules, and pink or purple, spieate or racemose 

 flowers. Calyx-teeth oblique, nearly equal, or the lower longer; standard 

 ovate or orbicular, sessile or clawed; wings oblong; keel erect, somewhat 

 gibbous, or spurred; stamens mainly monadelphous ; ovary 1-oo-ovuled; style 

 slender; pod linear, 4-angled or subterete, septate between the seeds. [ISTame 

 from the yield of indigo by some species.] About 275 species, natives of warm 

 and temperate regions. Type species: Indigofera tinctoria L. 



1. Indigofera suflruticosa Mill. Gard. Diet. ed. 8, no. 2. 1768. 



Indiyofera Anil L. Mant. 2: 272. 1771. 



A shrub, 1-2 m. high, usually much-branched, the branches slender, tough, 

 whitish appressed-pubescent and grooved when young. Leaves 5-12 cm. long; 

 stipules filiform-setaceous, very small; petiole 1-2.5 cm. long; leaflets 9-17, 

 oblong or oblong-obovate, 3 cm. long or ^less, obtuse or acutish and mucronate 

 at the apex, mostly narrowed at the base, pale green, appressed-pubescent on 

 both sides, or glabrous above, darkening in drying; racemes narrow, several- 

 many-flowered, 2-5 cm. long; pedicels about 1 mm. long, about equalling the 

 campanulate, pubescent calyx, reflexed in fruit; corolla yellowish, 3.5-4.5 mm. 

 long; pod falcate, appressed-pubescent when young, glabrous when old, 8-15 

 mm. long, 2 mm. thick, ridged on the sutures, 4-8-seeded. 



Waste and cultivated lands, Abaco, Great Bahama, New Providence, Eleuthera, 

 Great Guana, Bxuma, Cat Island, Watling's, Long Island, Acklin's and Inagua : — 

 Bermuda ; southern United States ; West Indies ; Mexico to continental tropical 

 South America. I. argentea of Schoepf. Wild Indigo. 



