of the I braska. 35 



linear-filiform, revolnle; bract-, ovate, densely ¥1110118, as is also 

 the calyx, with gray ten, y tawny hair- Rydberg). 



;{l'7. P. bp. . P. candiduB v&r. occicU Qr. of Pringle's col- 



lection, according to Dr. Britton. it Is, however, clearly no 



variety of P. cundidus, but may be of P. gracilis, Nutt,, of the 

 Bontta, to which it is nearly related. It differs from P. gracdu in 

 having more oblong leaves, longer more lax Bpikes, ami glandular 

 dotted calyx. Dr. Brltl in Bays if distinct from P. gracilu it is 



clearly a distinct species (Eydberg). 



200. PSORALEA L. Psoralea. 



328. P. DIGITATA Nutt. Aurora (Williams). Much confounded with 

 P. campestris. Specimens in the Herb, of Univ. of Nebr. collected 

 at Anselmo by Webber and at Valentine by Rev. Bates, evidently 

 belong here. Nebra*ka specimens collected by Dr. Bessey, have 

 beeu referred to P. digitata by Dr. Britton (Rydbei 



32y. P. floribunda Nutt. This species, I think, should not be merged 

 into P. tenuiflora Pursh. It is either a distinct species or a well 

 marked variety. P. floribunda Nutt. found in eastern Nebraska 

 has generally 5 oblong leaflets, 1-H in. long; many flowered ra- 

 cemes ; lower calyx teeth longer ; and larger flowers. P. tenuiflora 

 Pursh, of western Nebraska, has 3 oblong-oblauceolate leaflets, 

 \-% in. long; few flowered racemes ; and punctate, colored calyx 

 with equal teeth. Dr. Britton, to whom specimens and my notes 

 upon them have heen sent says: " I hid concluded that P. flori- 

 bunda could not go unnoticed into P. tenuiflora.'''' The matter 

 needs more investigation. Most of the localities for P. tenuiflora 

 in the catalogue of Nebr. Flora belong to P. floribunda. The only 

 specimens of the true P. tenuiflora I have seen are those collected 

 by Dr. Bessey, at Ft. Robinson, and my own, from the plains of 

 Deuel Co., Aug. 1890 (Rydberg). 



330. P. hypog.ea Nutt. Alliance, Lewellen (Swezey). Hills, Deuel 

 Co., June 26 (Rydberg). 



331. P. linkarifolia Torr. & Gr. Magnesia cliffs in Deuel Co., July. 



Racemes very loose, 3-G in. loug; leaflets 3, linear, 1-2 in. long; 

 Stem, leaves, aud calyx glandular dotted (Rydberg;. 



201. TR I FOLIUM L. Clover, Trefoil. 



-. T. PROCUMBBNS L. Low hop-clover. Yards and roadsides, 

 Lincoln. Adventive from Europe (Webber). 



202. LUPINUS L. Lupine. 



333. L. ak<;i:n i Kis Pursh var. ARGOPHYLLUS Watson. Prair: 

 rare. War Bonnet, June (Williams). 



334. L. AKiiKN i 'bus Pursh ?ar. dbcumbbns Watson. "Sand draws," 

 2 miles 8. W. of Sackberry spring-. A.ug, (Rydberg). Prairies of 

 Hat Creek Basin, common (Webber). 



335. L. PUSlLLUfl l'ursh. Lewellen (Swezey). Hills near Cur- 

 Frontier Co., June 23; Deuel Co., June 95 (Rydberg). 



