Lepidium. CRUCIFER.E. 1 'J '■. 



I. 5-7. — N. Nevada, Holmes Creek V' alloy, fi.OOO feet alt., WaUon,SLTn\ near Ilallmk Suuioii. 

 Wheeler ; Ir. Scptenil)er. A species very distiiiet in its matted liahit ; the flowers still iinkuoHii. 



* # Capsule orbicular, broadly elliptic <>r rarely «ivatc, abrupt or relusf at the aj»ex. 

 •*- Capsule wiugless or iucoiispieuously wiuged at tins apex, not e.xieediiif; 2 linen in breadth. 

 ++ Flowci-s bright yellow: style vi-ry slender and relatively long (half the length of 

 capsule). 



L. flavum, Tork. A glabrous prostrate annual, branched from the biise : leaves Innceulutc 

 or oblong-lanceolate in outline, .slightly fle.sliy ; the radical rosulate, regularly jiinnatitid 

 with short rounded loi>es and narrow acute sinu.ses; the canline less toothed : racenx* short 

 and dense, sulicapitate, somewhat curymbosoly arranged in robust individuals: uajinulo 

 glabrous, finely reticulated, bifid at the apex ; teeth acute; sinus open. — I'acif. 1{. Hep. iv. 

 67; Wats. Bot. King Exp. .50; Coville, Contrii). U. S. Nat. Herb. iv. 65. —California, 

 Mohave Creek, Fri'iiwnt, Uiyelow ; Mtdiavc Desert, Parn/, Mrs. Hush; Ash MeadowH, 

 Vegas A''allcy, aud Shepherd Canon, Coville & Fuustoii ; N. Neva<la, lluml>oldt N'alley, 

 Wutson, Humboldt Wells, Creene ; fl. March, April; fr. May. (Lower Ciilif., Onntt.) 

 ++ ++ Flowers white or nearly so. 



L. alyssoides, Okay. Smooth: stems 1-sevcral, erect, leafy, corymbosely branehed 

 above: uj.per leaves entire, narrow, long-linear, acute, ascemliug; the lower similar or 

 piuuately divided into a few usually rather narrow acutish entire or cleft segments! : jK-dicels 

 about 3 lines long: sepals short, oval, usually caducous, much exceeded by the more jK-r. 

 sistent long and slender-clawed petals: capsule rhombic-ovate. — PI. Fendl. 10, I'l. Wright, 

 i. 10, & ii. 15; Wats. Bot. King Exp. 29. L. monlanum, var. ali/ssoidis, Jones, Zoo, iv. 2ti6. 

 — riains aud mountain valleys, W. Texas to Arizona, northward to Colorado, Porter, and 

 Trinity Mountains, Nevada, Watson. 



L. montanum, Nutt. Probably biennial, low ami branched from near the l«kHe or less 

 frc(iueutly with a single erect stem branching above, minutely j)ulvernlcnt to rather densely 

 hirsute: leaves even the upper ones more or less dccj)ly toothed or piunatifid (very rarely 

 entire) ; segments ovate to oblong-elliptic or very rarely linear: sepals not falling Injfore the 

 petals : capsule ovate-elliptic to suborbicular. — Nutt. in Torr. &, Gray, Fl. i. i 16, 669 ; Gray, 

 I'l. Wright, ii. 15; Torr. Pacif. K. Rep. vii. 8; Wats. Bot. King Exp. 29. L. cori/mlxtsiiin, 

 Hook. & Arn. Bot. Beech. 323. L. Utahviense, Kegel, Act. Ilort. Petroj). i. 02. — In .similar 

 places as the last, with which it may occasionally intergrade ; the majority of forms, of the 

 two, however, are too distinct to be united. The southern range is similar to that of the 

 last, but westward and northward the present species extends to California and X. Idah«», 

 SjiuldnKj. 



L. SCOpulorum, Jones, in herb. I*erennial, becoming suffruticose at the biise, irregularly 

 branched, quite glabrous : leaves subcoriaceous ; the lower ones obovate or oblanceolate in 

 outline, toothed or rather deeply parted into broad obtuse segments and narrowed at the 

 base into more or less elongated petioles; the upper leaves narrower, .se.ssile, commonly 

 with a few spreading teeth near the apex : racemes usually numerous, rather dense ; pe<lioels 

 2i to 3 lines long: petals white, conspicuous, much exceeding the sepals; blade sulMirliic- 

 ular; claw slender: stamens G : capsule broadly ovate, smnewhat narrowed to the slightly 

 retuse apex, glabrous, \\ lines long; sides with low keels. — /., vioutanum, vnr. al/iinum, 

 Wats. Bot. King Exp. 29. L. inteijr! folium, var. he.trrophiillnm, Wats. Am. Nat. ix. 268. 

 L. heterophiiUum, Jones, Zoe, iii. 284, not Benth. — Rocky cliffs of mountains, at m<Klerate 

 altitudes, Utah, Wasatch Mountains, Watson, Jones, and near Cedar City, Parry. Certainly 

 a distinct species. 



Var. spatulatum, RomssoN, n. var. More decidedly fruticn.se: leaves spatulate. 

 quite entire except at the subti;uncate ami obscurely 3-toothed .ajwx : style very short. — 

 L. sprit td«f urn, Vasey, in herb. — Headwaters of the Bear Uiver, Colonulo, KoMf, BO. 51, 

 September, 1868. 



L. integrif Olium, Nitt. Herbaceous, glabrous or pul>erulent, probably liienninl. branched 

 from the base, 7 to 15 inches high : root single, stout, conunonly more than half inch in 

 diameter: leaves oblong, oblanceolate. or spatulate, acute or apicniate. thicki'i- i •■■ ^ 

 inches long, 2^ to 3i lines broad, entire: racemes singh', terminal or mor- 

 several, 1 to 2 inches'long: pedicels .sprea<ling, 3 to 4 linos long : |K-lal» ob... 



