MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 253 



* Aragallus viscidulus. 



Perennial, with a more or less tufted caudex covered with the rem- 

 nants of old leaves and stipules ; leaves all basal, 5-10 cm. long, 

 with 8-15 pairs of leaflets, loosely villous-pubescent ; stipules broadly 

 ovate, long-acuminate, membranous, sparingly covered with white 

 silky hairs ; leaflets oblong, 5-10 mm. long, obtuse or acutish ; 

 scape 1-1.5 dm. high, terete, erect or ascending, sparingly silky-vil- 

 lous, the upper portion with black hairs and somewhat viscid ; spike 

 rather dense, oblong ; bracts green, linear-oblong or lanceolate, the 

 lower often equalling or exceeding the calyx, which is cylindric, 

 densel}' hairy and viscid, and more or less blackish ; sepals lanceolate ; 

 petals yellowish at the base, the upper portion dark bluish-purple ; 

 pod membranous, oblong-ovate, gradually tapering into a short beak, 

 1-1.5 cm. long, finely black-pubescent, or in age glabrate ; ventral 

 suture strongly inflexed, half dividing the pod. 



It has generally gone under the name of Oxytropis viscida, and i& 

 apparently more common than that species. When I first saw Nut- 

 tail's type specimen in the Torrey Herbarium in 1894, I became 

 convinced that there must be something wrong, for Nuttall's speci- 

 men of O. viscida looked to me more like O. inonticola Gray, than 

 the plant generally known under the former name. It was not, 

 however, until I had seen the excellent specimens of the true A. 

 viscida, collected bv Prof. Aven Nelson, of the University of Wyo- 

 ming, that I was able to determine the differences. Aragallus vis- 

 cidiis is a stouter plant, characterized by the long and rather coarse 

 yellow hairs covering the base of the stem and the stipules, the 

 longer lighter-colored, never black, hairs of the upper part of the 

 stem, the calyx and the pod, and by the form of the latter; this is 

 ovoid, and more abruptly contracted into a longer beak which is 

 fully half as long as the body. 



Aragallus z'iscidulus grows on dry hills or mountain sides, at an 

 altitude of 2000-3000 m. 



Montana: Melrose, 1895, Rydberg, 2yi6. 



Yellowstone Park: 1873, C. C. Parry, 8g; Specimen Ridge,. 

 1885, Tzvccdy, j^g. 



Utah : American Fork Canon, 1880, M. E. Jones, i8g8. 



British America: Morley, i^S<,, Jo/m Macoun. 



* Aragallus viscidulus depressus. 



Depressed-cespitose ; scapes short and spreading ; spikes few- 

 fiowered, less black; leaves only 2-3 mm. long. 



