126 LEGUMINOSJE. (PULSE FAMILY.) 



1. LUPINUS, Tourn. ^ Lupine. 



Calyx very deeply 2-lipped. Sides of the standard reflexed : keel scythe- 

 shaped, pointed. Sheath of the monadelphous stamens entire ; anthers alter- 

 nately oblong and roundish. Pod oblong, flattened, often knotty by constric- 

 tions between the seeds. Cotyledons thick and fleshy. Herbs, with palmately 

 1 - 1 5-foliolate leaves, stipules adnate to base of the petiole, and showy flowers 

 in terminal racemes or spikes. (Name from Lupus, a wolf, because these plants 

 were thought to devour the fertility of the soil. ) 



1. L. per6nnis, L. (Wild Lupine.) Perennial, somewhat hairy ; stem 

 erect (l°-2°); leaflets 7-11, oblanceolate; flowers in a long raceme; pods 

 very hairy. — Sandy soil : common. May, June. — Flowers showy, purplish- 

 blue, rarely pale. 



2. CROTALABIA, L. Eattle-eox. 



Calyx 5-cleft, scarcely 2-lipped. Standard large, heart-shaped : keel scythe- 

 shaped. Sheath of the monadelphous stamens cleft on the upper side : 5 of 

 the anthers smaller and roundish. Pod inflated, oblong, many-seeded. — Herbs 

 with simple leaves. Flowers yellow. (Name from KporaKov, a rattle ; the loose 

 seeds rattling in the coriaceous inflated pods. ) 



1. C. sagitt^lis, L. Annual, hairy (3' - 6' high) ; leaves oval or oblong- 

 lanceolate, scarcely petioled ; stipules united and decurrent on the stem, so as 

 to be inversely arrow-shaped; peduncles few-flowered; corolla not longer than 

 the calyx. — Sandy soil, Mass. to Virginia near the coast, Illinois and south- 

 ward. July. 



3. GENISTA, L. Woad-Waxen. Whin. 



Calyx 2-lipped. Standard oblong-oval, spreading: keel oblong, straight, 

 deflexed. Stamens monadelphous, the sheath entire ; .'5 alternate anthers 

 shorter. Pod mostly flat and several-seeded. — Shrubby plants, with simple 

 leaves, and yellow flowers. (Name from the Celtic gen, a bush.) 



1. G. tinct6eia, L. (Dyer's Geeen-webd.) Low, not thorny, with 

 striate-angled erect branches ; leaves lanceolate ; flowers in spiked racemes. — 

 Eastern New York and Massachusetts, especially Essex Co., where it is thor- 

 oughly established on sterile hills. June. (Adv. from Eu.) 



4. TRIFOLIUM, L. Clover. Trefoil. 



Calyx persistent, 5-cleft, the teeth bristle-form. Corolla mostly withering or 

 persistent ; the claws of all the petals, or of all except the oblong or ovate 

 standard, more or less united below with the stamen-tube: keel short and 

 obtuse. Tenth stamen more or less separate. Pods small and membranous, 

 often included in the calyx, 1 - 6-seeded, indehiscent, or opening by one of the 

 sutures. — Tufted or diflftise herbs. Leaves mostly palmately, sometimes pin- 

 nately 3-foliolate : leaflets often toothed. Stipules united with the petiole. 

 Flowers in heads or spikes. (Name from tres, three, und folium, a leaf) 

 » Flowers sessile in dense heads : corolla purple or purplish, withering away ajier 

 flowering, tubular below ; the petals more or less coherent with each other. 



