OF ARTS AND SCIENCES : JUNE 14, 1870. 283 



* Annua?, pills rigidis vel rigidiusculis hirtse, nee incanre : folia etiam 

 inferiora basi longius attenuata vix petiolata: sepala anguste ex- 

 acteque linearia ! 



N. iiispida, Gray, 1. c. Semina in loculis 24-40, oblonga, haud 

 ultra £ lin. longn, obsoletissime rugulosa. 



N. demissa, n. sp: E radice exili patenti-ramosissima, 2-3-pol- 

 icaris, hirsuta ; foliis spatbulato-linearibus ; floribus subsessilibus ; 

 seminibus in loculis 10- 12 ovalibus ^ lin. longis obsolete grossius scro- 

 biculato-rugosis ; eoet. fere praecedenfis. — Dry or desert regions of Ne- 

 vada, Fremont, Anderson, Torrey, Watson in King's expedition ; forms 

 with ample corolla sometimes twice the length of the calyx. Fort 

 Colville, Washington Territory, Lyall, in herb. Kew. : a ve\-y low and 

 condensed form, with corolla not exceeding the calyx: characters indi- 

 cated by Professor Oliver. 



* * Annuoe, pube molliori vel breviori parum cinerea: sepala (ut in 

 pleris) sursum pi. m. dilatata. 



h— Folia basi attenuata vel acuta, plera (saltern superiora) sessilia vel 

 subsessilia. 



++ Semina haud ultra ^-lineam longa, lato-ovalia, subloevia, obso- 

 letius costata et areolata. 



N. Saxdwicensis, Gray, 1. c. Ramosissima, pube crebra hirsutulo- 

 cinerea ; foliis brevibus spathulatis margine mox revolutis ; pedunculis 

 calyce longioribus vel brevioribus; floribus parvis ; corolla calycem 

 parum superante; capsula ovali. 



N. Coulteri, n. sp. Laxe ramosissima, spithamrea, hirsutulo- 

 pubescens ; foliis oblongo-spathulatis planis membranaceis, imis tantum 

 in petiolum attenuatis ; pedunculis calyce brevioribus srepius brevissi- 

 mis; corolla calyce duplo longiore ; capsula oblongn. — "California" 

 [perhaps Arizona], Coulter, no. 463. Nazas Valley, Bolson de Mapi- 

 mi, Chihuahua, Mexico, Gregg. It much resembles A 7 ", dichotoma ; 

 but is well distinguished by the more hirsute pubescence without 

 viscidity, the larger corolla (about five lines long), and especially by 

 the seeds. 



++ ++ Semina £- ^-lineam longa, ovali-oblonga, favosa. 



N. dichotoma, Ruiz & Pav.; Gray, 1. c. Pube brevi plus minus 

 viscosa, corolla calycem haud vel parum. superaute, capsula ovato- 



