VI. 



PLANT^ WRIGHTIANjE. 



55 



expanded limb 2 lines in diameter. Fiuit not seen. Style villous bclow. — Tlie 

 smallest of all the species, botli for the leaves and the flowers. 



CowANiA Mexicana, i)o?i in Linn. Trans. 14. p. 574 t 22; Benih Pl Hartic. 

 p. 16. Hills on the Sonoita, near Deserted Rancho, Sonora; Sept. (1058.) 

 " Shrub 6 to 10 feet high, with short and stout branches." The pctals would ap 

 pear to have been ochroleucous, at most sulphur-colored ; but Mr. Wrirrht assures 

 me that they were whife in the living plant, which is also 

 doides, DC. Were the flowers of Don's plant truly yellow 



stated of Geum 1 dry 



Fallugia paradoxa, Torr. in Emory^s Rep. t. 2 ; Grai/, P/. Wright p. 68. On 

 the Pecos, Western Texas, in alluvial soil; June. (1059.J 



PoTENTiLLA PARADoxA, Nutt iu Torv. ^ Grat/, Fl. l.p. 437; Grai/, Pl. Wri<jht 

 p. 68. Sand-bars of the Rio Grande near EI Paso and Frontera; July. (1060.) 



RuBus Neo-Mexicanus (sp. nov.) : inermis, fruticosus ; ramis glabellis eglandu- 



losis : foliis 



5-Iobis molliter pubesccntibus, lob 



subincisis; stipulis lanceolatis ; pedunculis 1 -2-floi 



c> 



datis parce glandulosis ; petalis albis orbiculatis calyce longioribus ; carpellis nume- 

 rosis rubris. — Mountain-sides at the copper mines; Aug., in flower; Oct, in fruit. 

 (1061.) — Stems 3-5 feet high, much branched, glabrous; the branchlcts pubcs- 

 cent, but not glandular nor hispid, slender. Stipules proportionally larger than in 

 R. Nutkanus. Leaves one to 2-^ inches in diameter, with short and roundish or 

 obtuse lobes, or the terminal lobe acute ; when old, the surface is soraewhat plicate 

 and rugose. Peduncles about an inch long. Corolla, when expanded, au inch in 

 diameter. — Manifestly related to R. deliciosus, Torr.t which has purple flowers. 



RosA BLANDA, Ait., var. /3. Torr. §' Gray. Valley of the Limpio, especially at 

 Wild Rose Pass, to which it gives the name ; June. 



LYTHRACE^. 



Ammannia AVrightii (sp. nov.) : caule erecto ; foliis lineari-Ianceolatis basi auri- 

 culatis imis oblongis basi attenuatis sessilibus ; pedunculis 1 - 5-floris floribus lon- 

 gioribus ; calycis dentibus propriis atque accessoriis brevissimis ; pctalis et stamini- 

 bus 4 ; stvlo longiusculo. — Margin of pools and mountain streams east of Santa 

 Cruz, and along tlie San Pedro, Sonora; Sept. (1062.) — Root annual, Stems 2 

 to 7 inches Iiigh. Leavcs 6 to 12 lines long, rather obtuse. Peduncles 3 to 5 lines 

 long ; the pedicels 1 to 2 lines long. Bracts linear-subulate. Calyx a line and a 

 half long. Petals prbicular, purple, about the length of the stamens and style. 

 Capsule 2-ceIIed. — The conspicuously pedunculate flowers at once distinguish this 

 from all other North American species. 



A. DENTiFERA (sp. nov.) : humilis ; caule erecto ; foliis obkngo-llnearibus omni- 

 bus basi attenuatis subsessilibus ; floribus solitariis sessilibus apetalis tetrandris ; 

 calycis dentibus accessoriis subulatis patentibus proprios triangulares conniventes 

 triplo excedentibus. — East of Santa Cruz, Sonora, with the prcceding. (1063.) 

 Also at Santa Cruz (a dwarf form, only an inch high). — This species much resem- 

 bles A. humilis ; but it has prolonged and conspicuous accessory calyx-teeth. The 

 stamens are included and the style very short in all the specimens. 



f 



