Rydberg : Studies on the Rocky Mountain Flora 234 



exceeding the sepals ; blade broadly obovate : pod acutish, oval in 

 outline, about 4 mm. long and slightly over 2 mm. wide, glabrous, 

 reticulate, only slightly wing-margined above, retuse; st}'le about 

 twice as long as the width of the wing margins. 



This species is in some respects intermediate between L. alys- 

 soidcs and L. montamun. In the former only the lowest leaves are 

 pinnatifid, the pod is more rounded and the style is shorter, scarcely 

 longer than the width of the wing-margin. It is closer related to 

 L. montajium, differing mainly in the longer and narrower leaf- 

 segments, having a more persistent base and being less pubescent. 



Utah: St. George, 1880, M. E. Jones, i6j6 (type in herb. 

 N. Y. Bot. Garden); Price, 1900, vS". G. Stokes ; southern Utah, 

 1874, C. C. Parry, 18. 



Nevada: Trinity Mountains, 1868, 5. Watson, 120. 



Lepidium elongatum sp. nov. 



Annual : stem branched near the base, about 3 dm. high, 

 glandular pruinose above : basal leaves spatulate or oblanceolate, 

 about 4 cm. long, coarsely toothed or somewhat pinnatifid with 

 short lobes ; stem leaves oblanceolate, tapering into a short petiole, 

 entire or with a few small teeth, 3-4 cm. long, acutish : racemes 

 elongated, at the ends of the branches, in fruit i dm. or more 

 long : sepals oblong or oblanceolate, acute, thin and whitish ; petals 

 minute, linear-oblanceolate, one half to two thirds as long as the 

 sepals or lacking : pods nearly orbicular, about 3 mm. broad, usually 

 broadest a little above the middle, wing-margined and deeply retuse 

 at the apex, glabrous or slightly pruinose : stigma sessile. 



This species is nearest related to L. apetahini and L. ramosis- 

 siuiuin. From the former it differs in the branching near the base, 

 the more entire leaves, the somewhat larger pod and the petals 

 which are generally present ; and from the latter in the longer 

 racemes, in the lack of the small axillary racemes characteristic to 

 that species and a different pod. In L. ramosissinmvi this is 

 broadest below the middle. L. clongatinn grows on rocky hilltops. 



Washington: Almata, 1896, A. D. E. Elmer, 21 (type in 

 herb. N. Y. Bot. Card.). 



Idaho: About Lewiston, 1896, A. A. & E. Gertrude Heller, 

 3008. 



