Erysimum. CIILX'IFER.E. 143 



L. Gen. no. 537; DC. Syst. ii. 178; Roiclienb. 1. c. t. 4.'); Bontli. & Hook. 

 1. c. 08; Prantl, 1. c. TJl. [By B. L. Koiunson.] 



* Flowers small : jictals 2 to 2.1 lines loii;^, yclluw: siliques siibtcn-to, slmrt, ;') tn \() lines in 

 Icnixth : rotyleduus incumbent or nearly so. 



E. Cheiranthoides, L. (Woum-skeu Mlstakd.) stem .«len.ler, erect, nearly tercto, 

 quite .simple or more frecjuently copiously liranclied above : leaves laiKXM^late, acute at each 

 end, entire or remotely and inconspicuously denticulate, l.j, to .'3 inciies lonf^, tliin, i^jreeu 

 upon both sides, very finely pubescent ; hair.s mostly trifid : fruitint^ |)edicel.s straiglit, fili- 

 form, widely spreading!;, about 4 lines long: capsule erect or spreading, glal)rous, tijjped with 

 a slender but very short beak ; di.ssejjiment only half line broad. — S\tw. ii. 60 1 ; J)C. Svst. 

 ii. 498 ; Wats. Bibl. Index, G."3. />. ;«(;(v7/ti/v/w, I'ers. Syn. ii. I'Jlt ; Nutt. tien. ii. 68. Slsi/m- 

 brinm chcinnit/ioidcx, Kat. & ^Vrigilt, X. A. Hot. 429. — Prclcrriiig rii-h moist .soil of river 

 bottoms, but also found in dry situations, common and with wide range, Newfoundland, 

 Robirison & Schreiik-, to N. Carolina, Citrtiss, ace. to C'liiri^nian, and across the continent to 

 Oregon, Howell, and Alaska, Meehan. 



* * Flowers larger ; petals .3 to 12 lines long, yellow or orange (in E. a.yieriim sometimes 

 purple) : pods terete or 4anglcd, not strongly flattened, elongated (e.xcept in the fir.st spe- 

 cies), 1 to 4 inches long ; cotyledons incumbent (rarely very ol)li(iue oreven snbaccumbent). 



•i— Petals 3 to 5 lines long. 

 E. parviflorum, Nutt. Erect perennial, 10 to 18 inches high, cinereous and scabrous 

 with appressed 2-p()inted hairs: leaves narrow, lance-linear or oblong-linear, mostly quite 

 entire; the radii'al crowded, sometimes repand-dentate : .sepals linear-oblong, acute, .3 lines 

 in length, little exceeded by the rather narrow sulphur-yellow petals : pedicels 2 to 3 lines 

 in length, spreading in fruit : silicjues slender, erect or nearly so, at maturity usuallv 1 to 2 

 inches long, scarcely contracted above but tipped with a short stout style and distinctly 

 2-lobed stigma. — Nutt. in Torr. & Gysly, Fl.'i. 95, not Pars, (which is K. chtimnthoides). 

 E. lanceokitum, Hook. Fl. Bor.-Am. i. 64, not R. Br. ? E. hiemci folium, Hook. f. Arct. PI. 

 286, 319, so far as American specimens are concerned. E. aspenim, var. iiicoiisjiiniiim, 

 Wats. Bot. King Exp. 24. E. incoiispicuum, MacMillan, Metasp. Minn. Val 268. — Minne- 

 .sota, Srh7iette, to Colorado, Vas'';/, N. Nevada, ]V^ifson, Washington, (hrrur, and northward, 

 to Alaska. E. sip-ticolum (erroneous form for sijrticola), Sheldon, Hull. Torr. Club, xx. 28.5, 

 is probably from character a form of this species. 



E. REPiNDUM, L., a gerontogeous annual with somewhat similar flowers, but repand-denticu- 

 latc leaves, and widely spreading usually curved pods, has been rather fre(|uently found about 

 Now Vork City and Philadelphia, but upon made land, &c , and doservos niontioii oidy. 



■)— -I— Petals longer, half inch or more in Icngtli. 

 E. asperum, D.C ( Western Wall-flower.) Erect biennial or perennial, somcwiiat 

 scaltrous and usually more or less canescent with minute mostly 2-3 ])ointed hairs: stem 

 commonly simjde, 2 inciies to 3 feet in height, angled, in favorable situations becoming thick 

 and pithy : leaves very varialde, lanceolate to linear, entire or repand-dentate or the lowest 

 pinnatifid, thickish and very canescent or thin and green : sepals oblong to linear, green, 

 pale yellow, or whitish : petals yellow or more usually orange, rarely purple, 8 to 12 lines in 

 length ; bhide broadly oljovate or snborbicular ; claw very slender, consiileraldy exceeding 

 the sepals : fruiting pedicels 2 to 6 lines long, spreading': cai)sule usually rather sharply 

 tetragonal, erect or more commonly widely spreading, 2 to ,5 inches in length, a line or le.ss 

 in breadth; style 1 to IJ lines long; stigma commonly broad, .somewhat 2-lohed ; seeds 

 oblong, brown, often slightly wing-appendaged at the end ; cotyledons incumbent or oblique. 

 — Syst. ii. 505; Hook. Fl. Bor.-Am. i. 64, t. 22. E. lanreolati'im, Pursh, Fl. ii. 436. E. ns- 

 jieritm, var. Piirs/iii, Durand, Fl. Utah, 159. E. elatiim, Nutt. 1. c. E. n.yifriini, var. rhitum, 

 Torr. Pacif. R. Kep. vii. 7. E. as/icnim, var. }>fremu\ Wats, in Coville, Proc. IJiol. .Soc. 

 Washington, vii. 70, & Contrib. V. S. Nat. Herb. iv. 64. Chrir.nilhu^ <is/>rr, Nutt. (ien. ii. 

 69, not Cham. & Schlecht. 1 I/espcris /^tillasii. Porter & Coulter, 1 c. 9. — Rare, local, 

 and perhaps introduced in the East, I)ut abundant and widely distributed westward ; Mingnn 

 T.slands, (inlf of St. Lawrence, /.iiidrn: Columbus, Ohio, Snlliraiit : common from Illinois 

 to Texas, California, and iiorlbwanl to the Sa.-<kalihew:in. A hand.sonie and exceedingly 



