360 



FABACEAE. 



Vol. II. 



stamens monadelphous, or the vexillar one distinct; pod ovoid, stalked or sessile, few-seeded, 

 indeliiscent, enclosed by the calyx, [Ancient name for some quite different plant.] 



Twenty species or more, natives of Europe, Asia and northern Africa, the following typical. 



Anthyllis Vulneraria L. Kidney Vetch. Lady's- 

 fingers. Fig. 2490. 



Anthyllis Vulneraria L. Sp. PI. 719. 1753. 



Perennial, pubescent; stems often tufted, 8'-ls' long. 

 Leaflets 3-17, oblong, or those of basal leaves reduced to a 

 solitary terminal broad one ; peduncles as long as the 

 leaves or longer ; heads subtended by a deeply lobed bract ; 

 calyx very hairy, much inflated, narrowed at the mouth; 

 corolla yellow to dark red, 6"-io" long. 



In fields, Pennsylvania and Ontario, and in waste and bal- 

 last grounds at the Atlantic seaports. Adventive from Europe. 

 June-Aug. 



16. PSORALEA [B. Juss.] L. Sp. PI. 762. 1753. 



Herbs or shrubs, with dark glands or pellucid dots, 1-5-folioIate leaves, and purple blue 

 pink or white flowers, mainly in spikes or racemes. Stipules broad. Calyx-lobes equal or 

 the lower longest, or the two upper ones sometimes united. Standard ovate or orbicular, 

 clawed ; wings oblong or falcate ; keel incurved, obtuse. Stamens monadelphous or diadel- 

 phous; anthers uniform. Ovary sessile or short-stalked, i-ovuled. Pod ovoid, short, inde- 

 hiscent, i-seeded, [Greek, scurfy, from the glandular dots, whence the name scurfy-pea,] 



About 120 species, of wide geographic distribution. In addition to the following, about 25 

 others occur in the western United States. Type species : Psoralea bituminosa L. 



Leaves digitately 3-5-foIiolate (leaflets all from the same point). 

 Plants leafy-stemmed. , 



Flowers small, 2^-4" long. 

 Pods subglobofe. 

 Pods ovoid, or ovate. 



Pods with a short, mostly abrupt beak. 



Flowers few, scattered in slender elongated racemes. 

 Flowers numerous, clustered, or crowded in racemes. 

 Pods with a slender sharp or elongated beak. 



Leaflets linear ; flowers in loose elongated racemes. 



P. lanceolata. 



Leaflets linear-lanceolate, oblong, oblanceolate or obovate ; flowers 



Leaflets oblanceolate or obovate ; pubescence gray. 

 Leaflets linear-lanceolate or oblong ; pubescence silvery. 

 Leaflets linear-lanceolate ; calyx inflated in fruit. 

 Leaflets oblong ; calyx not inflated in fruit. 

 Flowers large, 6"-8" long, densely spicate. 

 Plants acaulescent, or nearly so, low, spreading; roots tuberous. 

 Leaflets oblong-cuneate. 

 Leaflets linear-oblong. 

 Leaves pinnately 3-foliolate (the terminal leaflet stalked). 

 Racemes short, on peduncles about e([ualling the leaves. 

 Racemes spicate, the peduncles elongated, much exceeding the leaves. 

 Leaflets oblong-lanceolate, obtuse ; pods 2" long, nearly orbicular. 

 Leaflets ovate-lanceolate, acuminate ; pods 4"-5" long, obliquely ovate. 



9- 

 10. 



P. tenniflora. 

 P. fioribunda. 



P. linearifolia. 

 spiked. 

 P. coUina. 



P. digitafa. 

 P. argophylla. 

 P. cuspidata. 



P. csculenta. 

 P. hypogaea. 



P. stipnlata. 



P. peditnculata. 

 P. Onobrychis, 



