120 CRUCIFERiE. Lesquerella. 



Var. sessilis, Watson, 1. c. Pods sessile. — Vesicaria angustifolia, Gray, PI. Wright. 

 ii. 13, ill part. — Texas, Frio Co., Wright, no. 848. Lindheimer's specimen from New 

 Brauufels, no. 326, in flower, referred to V. angustifulia (H. Lindh. pt. 2, 145), is probably 

 the same. 

 L. Gordoni, Watson, 1. c. Pubescence somewhat coarser : stems a foot high or less : 

 leaves linear-oblanceolate, entire or rarely repaud : petals spatulate, 3 lines long : pods 

 stipitate, 2 lines in diameter ; the style somewhat shorter ; cells 6-ovuled. — Vesicaria 

 Gordoni, Gray, PI. Lindh. pt. 2, 149. — Extreme W. Texas to New Mexico and Arizona. 

 Very near the last. 



Var. sessilis, Watson, 1. c. Pods sessile or nearly so, and often pubescent. — Vesi- 

 caria angustifolia. Gray, PI. Wright, ii. 13, in part. — With the same range, and S. Utah,^ 

 Parrij. Porms approach L. argyrea. 



L. aijgustifolia, Watson, 1. c. Finely lepidote : stems simple or branched, a foot high : 

 leaves at base lyrate-pinuatifid ; the cauliue narrowly linear and petiolate ; petals spat- 

 ulate, 2| lines long : pods sessile or on slender ascending or spreading pedicels, 2 to 2^ lines 

 broad ; the style somewhat shorter ; cells 2-ovuled. — Vesicaria angustifolia, Nutt. in Torr. 

 & Gray, Fl. i. 101. — Prairies of Red River, Arkansas, Leavenworth, Nuttall. 

 = = Biennial or usually perennial (but often fruiting the fir.st year) : pods sessile or 

 nearly so on ascending or spreading pedicels; cells 6-10-ovuled. 



a. Pubescence evidently stellate. 

 L. Engelmanni, Watson. Pubescence dense : caudex usually multicipital ; stems usually 

 simple, often dwarf, sometimes tall and branched : lower leaves ovate and petiolate to linear- 

 oblanceolate, entire or sparingly repaud ; the cauline linear-oblanceolate or -spatulate : petals 

 broadly spatulate, 3 to 6 lines long : pods usually in a short raceme, substipitate, 3 lines 

 loug ; the style as long or longer ; cells 6-8-ovuled. — Wats. 1. c. 254. Vesicaria Engelmanni, 

 Gray, Gen. 111. i. 162, t. 70, & PI. Lindh. pt. 2, 144. V. pulchella, Kunth & Bou'che', Ind. 

 Sem. Berol. 1845, 1.5, & Ann. Sci. Nat. ser. 2, xi. 229. — Central Texas, Austin and New 

 JiTunniels, Llnclhelmer, &c. ; Indian Territory, Gordon; W. Kansas, Ellis, Z. Watson; Col- 

 orado, bluffs of the Arkansas at Pueblo, Greene. 



L. argyrea, Watson, 1. c. Pubescence more or less dense : caudex often simple and 

 apparently annual or biennial ; the leafy stems decumbent or procumbent, simple or 

 branched, often a foot long or more : leaves very variable, from ovate and petiolate to 

 usually more or less narrowly oblanceolate, entire or often repandly toothed : petals .spat- 

 ulate, about 3 lines long, often turning purple : pods sessile in a long raceme, on straight 

 and ascending or spreading and curved pedicels, 2 to 2^ lines broad ; the style as long or 

 somewhat shorter; cells 6-10-ovuled.- — Vesicaria argyrea. Gray, PI. Lindh. pt. 2, 146. — 

 S. W. Texas, from the Colorado River southward. (Northern Mex. to San Luis Potosi.) 



b. Pubescence compactly lepidote, rarely evidently stellate. 



L. arctica, Watson, 1. c. Caudex usually simple and stems unbranched, 6 inches high or 

 less: leaves spatulate, 3 lines long: pods on ascending pedicels, 2^ to 3 lines long ; the 

 style a line long or less ; cells 6-ovuled ; septum perforate. — Vesicaria arctica, Richards, in 

 Frankl. 1st Journ. ed. 1, App. 743 (reprint, p. 15). Alyssuni arctlcum, Wormsk. Fl. Dan. 

 t. 1520. — We.st coast of Greenland and the arctic coast of N. America, east of the 

 Mackenzie River. 



Var. Purshii, Watson, 1. c. Pod somewhat pubescent ; septum entire. — Anticosti 

 Island, Shepherd, Maconn ; "Canada," Pwsh (in herb. Torrey). 



L. Fendleri, Watson, 1. c. Usually evidently perennial, with a multicipital caudex, often 

 dwarf; the simple stems rarely a foot high: leaves numerous, entire, mostly very narrowly 

 linear-oblanceolate, in the typical form somewhat wider : petals broadly spatulate, 3 to 5 

 lines long; pods in a dense and usually short raceme, 2 or 3 lines broad, sometimes ellip- 

 soidal and acutish; the style as long or a little shorter; cells 10-1 6-ovuled. — Vesicaria 

 Fendleri, Gray, PI. Fendl.'o. V. stennphyUu, Gray, PI. Lindh. pt. 2, 149, I'l. Wright, i. 10, 

 & ii. 13.— S. Colorado to W. Texas, Arizona.^ (N. Mex.) 



1 Also in Vegas Wash, S. W. Nevada, ace. to Coville, Contrib. U. S. Nat. Herb. iv. 62. 



2 Also in California at San Pedro Martir, ace. to T. S. Brandegee, Zoe, iv. 202. 



