36 Pea Family. 



M. lupulina L. Annual, pubescent; leaflets obovate, oval or orbicular: 

 stipules dentate; flowers yellow, small; pod 1-seeded, curved into a partial 

 spire. Reported from Story county. 



KOSACKMA Douglas. Ours an annual herb, with 1-3-foliate leaves and 

 rose-colored flowers. Calyx-teeth nearly equal. Petals free from the stamen 

 tube; standard ovate to roundish, claw remote: wing's oblong- or obovate; 

 keel incurved. Stamens diadelphous, '.» and 1; anthers all alike. 



\-\. purshiGna Benth. Stem 1-2 feet high, branched, more or less villons- 

 pubescent; leaves sessile or nearly so, leaflets usually 3. ovate to lanceolate: 

 peduncles axillary. 1- flowered: pods linear, about 1 inch long, 4-7-seeded. 

 Dry soil; June-July; infrequent; Henry, Boone, Lyon, and ^Voodbury 

 counties. 



PSORALEA L. Herbs, with usually glandular-dotted 3-.") -foliate leaves, 

 and spiked or panicled flowers. Calyx 5-cleft, campanulate. persistent, the 

 lower lobe the longest. Stamens raonodelphous cr diadelphous. Pod about 

 the length of the calyx, 1-seeded. indehiscent. 



P. escu r enta Pursh. Prairie Apple. Stem 5-9 inches high, very hairy, 

 from a turnip-shaped farinaceous root; leaves palmately 5-foliate: leaflets 

 entire, oval or obovate, nearly smooth above but hairy below: spike short, 

 dense, long-peduncled; lobes of the calyx and the bracts lanceolate, corolla 

 but little exceeding the calyx, standard ovate, reflexed, wings attached to the 

 middle of the keel: flowers bluish. Prairies; May-June; frequent; Emmet. 

 Lyon, Shelby. Pottawattomie, and Fremont counties. 



P. argophyila Pursh. Stem 1-3 feet high, clothed with silky white hairs: 

 leaves usually 3-foliate: leaflets oval, oblong or obovate; flowers in inter- 

 rupted spikes; calyx and bracts lanceolate. Prairies; common in the western 

 half of the state; June-August. 



P. tenuifiora Pursh. Stem slender, erect, 2-4 feet high, much-branched, 

 appressed pubescent; leaves palmately 3-5-foliate; leaflets linear, oblong cr 

 oval; racemes loosely few flowered; Prairies; June-August; frequent: 

 Decatur, Union, and Ringgold counties. 



A/VlOF^FriA L. Low perennial shrubs, with odd-pinnate glandular-punctate 

 leaves, the leaflets stipellate. mid vein excurrent, and bluish or purplish flow- 

 ers in dense terminal clustered spikes. Calyx ;">-toothed. Standard envelop- 

 ing the stamens and style; wings and keel wanting. Stamens 10, exserted. 

 monodelphous at the base. Pod oblong, longer than the calyx, beaked. 



A. fruticosa L. Willow Serb. False Indigo. Shrub 4-7 feet high, somewhat 

 pubescent or glabrate, leaves petioled, 9-19, oval cr oblong, obtuse, not 

 crowded, short-stalked: pod 2-seeded. Common along streams: May-June. 



A. canescens Pursh. Lead I'lant. Stems about a foot high, clothed with a 

 white velvety pubescence; leaves sessile; leaflets 21-49, crowded, nearly 

 Lie; pod 1-seeded. Common in dry soil, prairies; June-August. 



A. microphylla Pursh. Stems a foot high or less, nearly glabrous, spike 

 solitary or lew in a cluster. Prairies and upland woods: May: Emmet, Cerro 

 Gordo, Palo Alto, Clay, Dickinson, Delaware, Louisa, and Decatur counties. 

 (J. nana Nutt.) 



DALEA L. Herbs, with odd-pinnate glandular-punctate leaves, minute 

 stipules, and small Mowers in terminal spikes or heads. Calyx .'.-toothed or 

 cleft, teeth about equal, standard cordate, inserted in the bottom of the 

 calyx: wings and keel adnate to the center of the cleft stamen tube. Stamens 

 '.i or 10. Pod I -seeded, enclosed in the calyx. 



