Henderson : New Plants from the Northwest 343 



turn with a broad central nerve, conspicuously celled, the cells in 

 and near the nerve longitudinally elongated, those of the wings 

 very irregularly oblique or transverse. 



A singular species, simulating Bray a humilis remarkably, but 

 differing in the slightly more-lobed leaves, petals with slightly 

 broader claws, a less stellate inflorescence, longer pedicels, and the 

 very peculiar septum. Were it not for this latter peculiarity, the 

 plant might well be considered a variety of Braya hiimilis, but the 

 broad nerve and different cell structure of the septum separate it 

 from this genus, if they do not even invalidate the generic stand- 

 ing of Braya. No. 3037. On a dry slope under Pinus ponderosa, 



Salmon River Canyon, beyond Florence, Idaho, July 1, 1895. 

 Altitude about 4800 ft. i 



V * 



Type in the National Herbarium ; cotypessfti the Gray Her- 

 barium, in that of the University of Idaho, and in my private col- 

 lection, v ) 



v Arenaria Salmoneflsis 

 — \ 



Caudex ligneous, much branched below the surface of the 

 ground : stems delicate, 6— 8;- cm. high, glabrous below, glandular 

 above : fascicled leaves few, glabrous, serrate-margined, about 1 

 cm. long, acerose, acute ; cauline similar but slightly shorter, 

 arcuate or erect : cyme loose, 2-4 times divided, the bracts very 

 scarious, ovate, 1 -nerved, 1-2 cm. long: pedicels 2-6 mm. long, 

 these as well as the sepals minutely glandular : sepals 2—3 mm. 

 long, ovate, very obtuse when the scarious edge is well developed 

 or acutish when the edge is less developed : petals a half longer 

 than the sepals, narrowly oblanceolate, obtuse or somewhat erose 

 at apex : stamens commonly 10 : pod slightly exceeding the 

 sepals, with 2-cleft valves. 



Very near to Arenaria snbcongesta, but differs in smaller stature, 

 smaller flowers, and fewer radical tufts of leaves. 



No. 3505. Dry, gravelly plains, near the source of Salmon 

 River, Blaine County, Idaho, July 20, 1895, near 6500 ft. alt. 



^Lupinus erectus 



25-35 cm. high, erect, many-stemmed, herbaceous, closely ap- 

 pressed canescent to silky, few-leaved, branching slightly above 

 with apparently sterile branches, with peduncle about 5 cm. long : 

 radical leaves very numerous, the petioles twice to thrice exceed- 

 ing the leaflets, these linear-oblong to narrowly oblanceolate, acute 

 to acuminate, 5 to more commonly 8 in number, 1.5-4 cm. long, 



