Thehjpodium. CRUCIFERiE. 170 



narrowed at the base ; canline lance-linear, attenuate, safpttatc-anriculate, erect ami usually 

 api)rcssecl, seldom au iucli long: racemes 4 to 6 indies in lfii;jlli ; buds an<l Howers asccnd- 

 ing; pedicels 1^ to :i lines long : sepals oblong, usually ])urplisli tinged; the lateral distinctly 

 saccate at the base: petals narrow, crisped, nearly twice as bjng as the cjilyx : cjipsules 

 slender, 12 to 15 lines in length, slender-beaked. — i^roc. Am. Acad. xxi. 445. — At Camp 

 I'olk and in Harvey Valley, Oregon, IJowdl ; H. June. 



T. eucosmum, Robinson, u. .sp. Biennial or perennial, glabrous: caulinc leaves ublong 

 or lanceolate, entire, spreading, I to 3 inches long: racemes several, very many-flowered; 

 pedicels 2 to 3 lines long: buds and flowers widely spreading, usually horizontal, deej) 

 purplo : petals spatulate, 4 lines long : pods arcuate, ascending, IJ to I A inchefi long (nut 

 mature). — A very attractive species of Oregon, fir.-^t collected at Baker City, It D. S'ecius, 

 1875, and later in the Blue Mts., 7'. Howell, 21 May, 1885, no. 345. 



-1— -J— Flowers opening close to the summit of the intloresceuce, while still coryinlxjsely 

 clustered. 



T. sagittatum, Endl. Biennial, usually branched from the base, often somewhat hispid- 

 piiliescent below, quite smooth above, glaucous : stems subsiniple, ascending or nearly erect, 

 moderately leafy: leaves entire; the radical spatulate, I to 3 inches long; the caulinc 

 ovate-lanceolate to lance-oblong, sagittate-clasping with bluntish auricles : sepals about 2 

 lines long, but half the length of the ro.seate or purplish petals: fruit erect or spreading, 

 often somewhat incurved, torulose and tipped with a slender style. — Endl. ace. to Walp. 

 Rej). i. 172 ; Wats. Bot. King Exp. 25, in paic; Brew. & Wats. I. c. Pnrhi/podium sni/itta- 

 tum, Xutt. in Torr. & Gray, Fl. i. 97. — S. Utah, Palmer, to the Yellowstone Park, Tundii, 

 and Montana, Watson; in the "Snake Country," I'olmic, and Rocky Mts. of the Northwest, 

 Nuttall, Burke. Said to prefer moist alkaline soil. 



T. flexuosum, Robinson, n. sp. Steins slender, weak, and subdocumbent, flexuous, nearly 

 nakeil alxne : radical leaves numerous, lanceolate, including the slender petioles 4 to G 

 inches in length ; cauline leaves distant, all or at least the upper much reduced, linear- 

 oblong or lance-linear with narrow acutish auricles : flowers and frnit nearly as in the 

 preceding. — T. sac/ ittatum, Wats. Bot. King P^xp. 25, in part; Amlerson, Cat. 117; not 

 Endl. — In alkaline soil among sage brush. &c. Xevada, near Carson City, Avdrrson, 

 no. 140, Truckee Valley, Watson, no. 108 ; California, Surprise Valley, Modoc Co., Leinmon ; 

 Oregon, Union Co., Cusick, no. 921, Harvey Valley, Howell, no. 341. 



T. (■) salsugineum, Robinson, n. sp. A low branching annual, glabrous and glaucous 

 throughout : .stems slon'ler, terete, often flexuous: cauline leaves ovate to oblong, half inch 

 to inch and a (juarter in length, entire, obtusish : flowers small : petals white or nearly so, a 

 line to a line and a half in length: pods 6 to 8 lines long, erect on spreailing pedicels. — 

 Sisi/mbrium salsuffhieum, I'all. It. ii. A])p. no. 114, t. 5; Ledeb. Fl. Ross. i. 185. S. ulaucnm, 

 Nutt. in Torr. & Gray, Fl. i. 93. Turritis salsiKjinea. DC. Sy.st. ii. 212. T. {!) dij/usa, 

 Hook. Fl. Hbr.-Am. i. 41. — Rocky Mountains from Colorado at South Park, Porter, to 

 Brit. America and the shores of the Arctic Sea, Rirhnrdson, ace. to Hooker, 1. c. Appar- 

 ently the same as the plant of Central Asia, but too little known in its American occurrence : 

 scarcely differing from other T/ieh/podia except in its low slender habit ami e.xceptioniil 

 range, but very distinct from any American Sisi/mhn'a. 



* * * Leaves as in the preceding: pedicels developed (2 to 6 lines long): siliques elon- 

 gated, usually 2 to 4 inches long, generally arcuate-spreading or somewhat deflexed. 



•i- Petals with a distinctlj' developed blade, obovatc or spatulate. 

 ++ Flowers white or purplish. 

 T. Vaseyi, Coulter. Rather slender, erect, glabrous and glaucous, branching from nejir 

 the base : branches terete, leafy : cauline leaves obovate, obtuse or rounded at the apex, thin, 

 narrowed toward the clasping ba.se, repand-dentate : flowers very small, a line and a half in 

 length, white, closely aggregated at the summit of the axis: fruiting racemes lax: pods 

 rather few, 2 inches long, very slender, nearly erect on ascending pedicels 3 or 4 lines in 

 length. — Contrib. U. S. Nat. Herb. i. 30, ii. 1.5, t. 1, as to pi. Nealley, the first nientiune 1 

 tyjie, not pi. A'ascy, which is a Sisi/ndtriiim with nnich shorter fruit. In tho.phite, the stem 

 on the left anil the fruiting branch are of pi. Nealley.— .\ very interesting species as yet 

 oidy collected near Rio (Irjmde City, Nenllpi/, evidently ne:irly related to /'. s.ilsiiohoum, 

 from which it differs chiefly in its larger leaves and lonf,er frni; 



