TIdaspi. CRUCIFEILE. 



tella, Beiith. & Hook. Geu. i. 'Jl ; llivw. ct W:its. IJot. Calif, i. IS. rUv IJ. L. 



ROKINSON.J 



D. Californica, Hakv. 1. c. SpreailinK aiimial, usually liraii<hliiK from the baw«, 4 iuchen 

 to a foot in height: leaves tliickish, oviite or almost oriiicuhir, «'uarHely ami uiitiuM-lv few- 

 toothed or subeiitire ; the radieal narrowed lielow to Hlemler petioh-s ; lh«' cauline nearly 

 sessile, somewhat euneate at base : racemes very dense, often hramhed ; jK-dieels sc-artely a 

 line in length : stellate-tomentose sej)als erect in antliesis, acutisli, aUmt 3 lineH long, 

 much exceeded by tlie spreading white or purplish jietals : fruit notched iMJth al>ove and 

 below; lobes suborbicular, margined, tomentose at the edge, ^^ lines or more in diameter. — 

 Eugelm. iu Wisliz. Tour N. Mex. 96; Gray, 1*1. Wright, ii. U. liiscuhlla Califomim, 

 Brew. & Wats. 1. c. — Saudy soil, S. California, Tk. Coulter, Parry & Palmer; Whito 

 Water, San Bernardino Co., Calif., Parish, Jones ; Lincoln Co., Nev., Coville & Funslon. 

 (Lower Calif., Or.utt.) 



Var. maritima, Davidson, in litt. Leaves thicker, distinctly fleshy, more densi'ly 

 canescent-tomentose : infloresceneo very dense ; pedicels " dark pur])lo." — liisculil/a ( 'uli- 

 Jhniicu, var. mtirUima, Davidson, Erythea, ii. 179. — Hand dunes of coast, Los Angeled Co., 

 Calif., Monica, Lijon; Eedoudo, Miss Merrill. * 



D. "Wislizeni, Engelm. 1. c. 95. Erect, subsimple or occ^isioually Itranching from U-low 

 and somewhat spreading, 1 to 2 feet high, becoming rather stout : leaves crowded, lanceolate 

 or ovate-lanceolate to linear-oblong, narrowed to a slender and often distinctly petiolate 

 base; the upper sessile : racemes elongated, loose ; divaricate or a.scending pedicels 4 to 8 

 lines iu length : petals white : fruit notched below, but more frequently shorl-l)eaked above, 

 or if notched very shallowly so. — Gray, PI. Wright, i. 10, ii. 14, & I'l. Thnrb. 299 ; a* 

 Dilhi/raa, Gray, PI. Lindh. pt. 2, 1.50, & PI. Fendl. 116; Torr. in Marcy, Rep. 280, t. 2; 

 Torr. & Gray, Pacif. R. Rep. ii. 1.59. Iberis, n. sp., Torr. Auu. Lye. X. Y. ii. 166. Bincntella 

 Wislizeni, Brew. & Wat.s. Bot. Calif, i. 48; Coulter, Contrib. U.S. Nat. Herb. ii. 21. — Com- 

 mon ou sandy hills, Arkansas and Texas to Arizona and S. Utah; tl. Ajtril to Augu.^t. 

 (Mex., Prinijlc.) 



12. THLiASPI, L. (0Xav, to crush, iu reference to the pods and seeds, 

 which are strongly flattened as if crushed.) — A genus of moderate size, cliiefl y 

 of S. Europe and Central Asia ; glabrous annuals or perennials with undividt'd 

 sessile and often amplexicaul leaves. Flowers white or purplish. — (ieu. no. 

 530; DC. Prodr. i. 17.5 ; Reichenb. Ic. Fl. Germ. ii. t. a ; Pruntl, I.e. 1 GO. 

 [By B. L. Robinson.] 



* Capsiiles large, orbicular or nearly so, broadly winged, very strongly obcompressed ; sidca 

 nerved but not keeled ; apex deeply notched : introduced annual. 



T. ARVExsE, L. (Penny Cress.) A span to a foot high, decnml)ent or erect, simple "r 

 considerably branched above : leaves obtusely and rather remotely toothe<l or angled ; the 

 lower spatulate; the upper oblong, obtuse: Howers small : sejjals greenish, a line in length, 

 exceeded ■l)y the spatulate white petals. — Spec, ii, 646; Eng. Bot. t. 16.59; Pursh, Fl ii. 

 435; Hook. Fl. Bor.-Am. i. 58. — Streets of cities, about dwellings, etc., generally dis- 

 tributed and locally common in the northern and eastern parts of the United Stsites an<l 

 Canada, most copious, however, in Manitoba and adjacent Minnesota, where it bears the 

 name of "French Weed." (Xat. from Eu.) 



* * Capsules obovate or oblanceolate, not broa4]ly winged, nor so strongly obcompres.-^Hl, 

 sides more or less distinctly keeled; aj)ex until dehiscence entire or very shallowly 

 notched : indigenous species of the West and Southwest. 



T. alpestre, L. Perennial, quite simple or more commonly branched from the l>a.«e, 2 to 8 

 inches, rarely a foot or more high : rootstock slender, elongated : leaves small, sulicntinj or 

 finely toothed; the radieal oliovate or oval, roimded at the api-x, n.irn.we*! to Hlomier 

 petioles: th6 cauline ov!ite or oblong, 3 to 8 lines b' ' ' ''<" 



ba.ses : racemes simple, termiiuil, rather dense ; pedii< , -': 



sei,;iU i,nrnll-,h I IniMiMi-LMU.',! : prtals white or J>ab ; "le 



