i9i A NELSON— IDAHO PLANTS 137 



the upper one-fourth closed: inner spathe 6-8-nerved, with inter- 

 mediate nerves, the whole margin broadly hyaline, less than half 

 as long as the outer and shorter than the mature pedicels: scales 

 thin, silvery scarious, from half to nearly as long as the inner spathe, 

 the primary one with 3 conspicuous green nerves: flowers 1-4, 

 medium size, seemingly purple or purplish (the material at hand 

 quite mature and the flowers out of condition) : stamineal column 

 short: pedicels erect, 25-45 mm. long: capsules 5-6 mm. long, 

 obovoid-globose but evidently trigonous, pale green: seeds about 

 15, 2 mm. long, flattened-oval, sometimes slightly trigonous or 

 rhomboidal but always compressed and more or less wing-margined, 

 and rugulose-pitted. 



It is not clear to what species this is most nearly allied, but it is so strongly 

 marked by its mass of fibrous roots, its stout wingless stems, its broad leaves 

 and spathes, and its large capsule and numerous large winged seeds, that its 

 recognition is not difficult. 



Macbride's no. 909, Silver City, June 17, 191 1, is the only collection at 

 hand. This, singularly enough, was secured on a dry open hillside. 



Eriogonum shoshonensis, n. sp. — Annual, 1-2 dm. high, more 

 or less white-lanate throughout and densely so on the under side 

 of the leaves : stems few to several from the base, slender, dichoto- 

 mously or tricotomously branched, the lower internode rather long, 

 the succeeding ones gradually shorter, all the branches rather 

 closely erect and therefore appearing fasciculately crowded above: . 

 leaves open-rosulate, 1-2 cm. long, on slender petioles as long or 

 longer: bracts minute, triangular-subulate: involucres sessile, in 

 the forks and lateral, and rather numerous on the branchlets, 

 firm and somewhat angled by the thickened greenish nerves that 

 terminate in the very short teeth, nearly tubular, about 2 mm. long, 

 5-10-flowered: perianth glabrous, on slender unjointed filiform 

 pedicels which protrude about 1 mm.; perianth segments pinkish- 

 white, with greenish midrib, obovate, obtuse, 2 mm. long, the outer 

 noticeably broader than the inner: achene ovoid-triangular, 

 abruptly contracted into a rather slender beak, nearly as long as 

 the body, both together as long as the perianth. 



Probably most nearly allied to E. trxtncatum T. & G. Proc. Amer. Acad. 

 & :i 73, but differing essentially in habit. That may perhaps best be described 



