254 Rydberg : Studies on the 



about 4 mm. wide, short-pubescent: wing-margins crenate or 

 lobed, not fenestrate : style scarcely exceeding the wing-margin. 

 Utah : Silver Reef, 1 894, M. E. Jones, 5163b, in part (type 

 in U. S. Nat. Herb.), 5i4gd and J/Jp^/. 



Trifolium lividum sp. no v. 



Perennial, densely cespitose and tufted : branches of the caudex 

 short and covered by the remnants of the leaf-bases and scarious 

 stipules ; free portion of the latter subulate-filiform : petioles 4-1 5 

 cm. long, slender, glabrous ; leaflets linear-lanceolate or oblanceo- 

 late, very acute at both ends or cuspidate at the apex, 3-4 cm. 

 long, glabrous above, sparingly appressed hairy beneath, green, 

 entire-margined: peduncles 1-1.5 dm. high, sparingly appressed 

 hairy: heads nearly 2 cm. in diameter; bracts linear-subulate to 

 almost filiform, longer than the calyx-tube, glabrous, slightly if 

 at all scarious-margined : calyx-tube 2.5-3 cm. long ; teeth subu- 

 late-filiform, 4-5 mm. long : corolla about 12 mm. long, light 

 purple with a darker keel. 



This species is nearest to T. dasyphylhim, but is a larger, more 

 glabrous and greener plant, and with much larger and narrower 

 bracts. It grows at an altitude of about 3000 m. 



Colorado: Graymount, 1895, P. A. Rydberg, 2442 {\.y^& in 

 herb. N. Y. Hot. Garden); Alpine Tunnel, 1897, C. L. Shear. 



Trifolium pedunculatum sp. nov. 



Perennial, with a somewhat cespitose base : stems 2-4 dm. 

 high, rather slender, striate, glabrous or with a few appressed 

 hairs : stipules 2-3 cm. long, lanceolate, i^ or ^ of their length 

 adnate to the petioles, denticulate : petioles 4-6 cm. long, slender ; 

 leaflets 3, oblanceolate to Hnear, acute, finely denticulate, 2-3.5 

 cm. long: peduncles i dm. or more long: heads 15-18 mm. hi 

 diameter, not bracteate : flowers subsessile, 10-12 mm. long, in 

 fruit not reflexed : calyx-tube 2 mm. long, glabrous below, pubes- 

 cent towards the throat ; calyx-teeth subulate, the lower 3-3.5 mm. 

 long : corolla purple. 



This species is nearest to T. longipes, but differs in the smaller 

 purple flowers and the calyx which is glabrous below. 



Idaho: Long Valley, 1895, L. F. Henderson, jogd (type in 

 U. S. Nat. Herb.); near Sawtooth, 1896, B. IV. Evermann, 3^2. 



Lotus longebracteatus sp. nov. 



Perennial, cespitose, decumbent : stems 2-3 dm. long, diffusely 

 branched, grayish strigose : leaves thick, grayish strigose with a 



