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PLAHT^ ■WRIGHTIAN.?:. 



VI 



V. PURPUREA (sp. nov.): multicaulis e radice crassa perenni; foliis canesceu- 



/^tibus, radicalibus rosulatis obovatis oblongisve nunc sinuato-panduratis in petiolum 



attenuatis, caulinis paucis parvis sessilibus ; racemis multifloris, fructiferis elongatis ; 



petalis roseo-purpureis ; siliculis ovoideo-globosis stylo gracili longioribus. 



Stony 



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hills near El Paso; March, ApriL (1320.) — Flowering stems nnmerous from 

 a thickened root, scape-like and simple, erect, a span, or in frnit a foot, high, 

 including the racenie. Radical leaves one to two inches long, half an inch or more 

 in width, contracted into a petiole of nearly the same length, canescent and slightly 

 scabrous with a very fine and close stellate pubescence, entire, or some of them sin- 

 . uate and fiddle-shaped. Cauline leaves sparse, mostly hract-like, only from 2 to 4 

 lines in length, obovate, spatulate, or oblanceolate, Raceme strict, in fruit 3 to 6 

 inches long, with the spreading or at length recurved pedicels 3 to 6 lines long. 



F 



Petals spatulate-obovate, 3 lines long, light purple (destitute of any tinge of yel- 

 loAv); the calyx sometimes tinged with purple. Filaments enlarged at the base. 

 Ovary ovoid, glabrous, about the length of the style : ovules 5 or 6 in' each celL 

 Silicle ly to 2 lines in diameter, not stipitate; the valves hemispherical, membrana- 

 ceous. Immature seeds orbicular, -wingless ; the funiculi free. Embryo not seen ; 

 but from the flatness of the seed the cotyledons are undoubtedly accumbent. — A 

 genuine Vesicaria, of the section Vesicariana, with purple flowers ! 



DiTHYREA WisLizENi, Engelm. ; Gray, Pl. WrigJit. p. 10. Valley of the Rio 

 Grande, near El Paso, and above Dona Ana, common. (1321.) — D. Californica, 

 Karvey, which I have seen in the herbarlum of Trinity College, Dublin, has much 

 smaller siUcles than D. Wislizeni ; they are also more deeply emarginate, the cells 

 being nearly orbicular, and their thickened edge is tomentose. 



Thlaspi Fendleri : foHis carnosulis subintegerrimis, radicalibus petiolatis ovali- 

 bus, caulinis sagittato-oblongis amplexicaulibus ; racemo etiam fructifero brevi con- 

 ferto; floribus majusculis ; petalis calyce triplo longioribus; siliculis lato-obovatis 

 subalatis basi acutis apice immaturis sinu aperto leviter obcordatis maturis truncato- 

 subintegris, loculis 3 - 4-ovulatis ; stylo filiformi fructu dimidio breviore. — T. coch- 

 leariforme, Grag, Pl. Fendl p. 10, non DC, nec IIook.--Oi\ the Or^an Mountains, 



northeast of El Paso ; May : mostly in fruit. 



(1322.) 



Plant a span high, or 



half or two lines loner. 



lower ; the raceme an inch, or, even in full fruit, not over 2 inches, in length ; the 

 pedicels closcly approximate, spreading, in fruit 5 or 6 lines long. Petals (in Fend- 

 ler^s specimens) 4 lines long. Ovary obcordate by a broad and shallow sinus ; the 

 cells 3 - 4-ovulate. Ripe silicles 4 lines Idng, with sharp but slightly winged edges, 

 obscurely emarginate or even truncate at the broad summit ; the style a line and a 



The specimens of Fendler were mostly in flower only : 

 mine with young fruit have the raceme more loose than in those gathered this 

 spring by Mr. Wright ; which, being in fruit, plainly show that I was wrong in. 

 rcferring the New Mexican plant to T. cochleariforme. The latter has the fructif- 

 erous raceme long and loose, and has likewise smaller flowers, narrower pods, with 

 a deep and n^iTOw apical sinus, and a short style. Our plant is more like T. pitecox ; 

 which also harsmallcr flowers, and winged pods, with a very deep notch. 



Hymenolobus pubens, Gray, Pl. Wright. p. 9. On llainwater Creek, between 



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