92 Nelson — N'evi Plaiits from Nevada. 



shorter somewhat margined petiole; those of the stems small, oblong- 

 lanceolate, 2-3 cm. long, sessile by an auricled base; inflorescence naked, 

 at length very open, 10-15 cm. long; pedicels spreading, at length at 

 right angles to the rachis, becoming 3 dm. or more iti length; pods sim- 

 ilarly spreading, as long as the pedicels, tapering into a beak-like style 

 one fourth as long as the pod, sessile on an enlarged receptacle, flattened 

 parallel to the partition, faintly 1-nerved; sepals oblong, erect, greenish 

 with scarious pink margins, half as long as the petals, the lateral pair 

 noticeably spurred at base, the other pair only slightly gibbous; petals 

 purple, broadlj^ spatulate, with nearly flat blade and cuneately tapered 

 to a short narrow claw; stamens free; stigma small, circular; seeds imma- 

 ture. 



The generic position of the plant seems somewhat doubtful. I call it 

 an Arabis because of its duration, its branched pubescence, its gibbous 

 sepals, its nearly flat broad petals, its flat 1-nerved pods. But some of 

 these characters are also ascribed to some of the species of Streptantlius. 

 In fact this plant has somewhat the appearance of a Strepta7it7i,us es- 

 pecially in its beaked pods, sessile on an enlarged receptacle. In this 

 respect it reminds one of S. longirofitris Wats., but one may well ques- 

 tion if that species were not better left in Arabis where Dr. Watson 

 originally placed it. However, if that species remains a Streptanthus, 

 it, is possible that the species here described miist become Strejitanthns 

 pedicdbttus. 



Founded upon Kennedy & True's No. 705, Hunter Creek Canyon (near 

 Reno, Nev.), May IG, 1903. 



Viola senecta sp. nov. 



Grizzly-white, with rather long, dense, tangled-hirsute pubescence; 

 stems short, slender, from a thickened branched root; leaves ovate, sub- 

 acute, more or less irregularly toothed, 1-3 cm. long, abruptly or 

 cuneately faltering into the rather long sl3nder nearly glabrous petiole; 

 stipules scarious, mostly entire, linear-lanceolate, somewhat ciliate-pu- 

 bescent; scapes shorter than the leaves; sepals laneeolate, about 5 mm. 

 long, sparsely ciliate; petals yellow, glabrous, obovate-spatvilate, 7-8 

 mm. long; the lower a little longer, with orbicular blade, abruptly in- 

 hexed at base, enclosing two anthers, scarcely at all spurred; connective 

 of anthers produced into a greenish ovate appendage. 



This is probably V. prcemorsa in so far as Nevada specimens cited in 

 literature are concerned. It seems to have characters that demand its 

 separation. The type was collected by Prof. F. H. Hillman, "near 

 Peterson's Ranch'", Nev., April 20, 1895, 



Mirabilis glutinosa sp. nov. 



Stems several from a branched woody cavidex, 2-4 dm. high, more or 

 less branched from the base up, somewhat pubescent especially above. 



