OF ARTS AND SCIENCES : OCTOBER 14, 1862. 73 



++ ++ ++ ++ Filamento sterili glaberrimo. 



a. Serratifolii, confertiflori, panicula stricta multiflora ; corolla parum 



bilabiata. 



51. P. DEUSTDS, Dougl. in Bot. Reg. t. 1318. (P. ilicifolius, Nutt. 

 ined.). Glaber ; foliis stepe laciniato- seu pectinato-serratis, caulinis 

 oblongis seu lanceolatis ; cymis pedunculatis, sepalis lanceolatis acu- 

 minatis; corolla flavida semipollicari, tubo parum ampliato. — Interior 

 of Oregon ; a rare species ; but it has been collected by Douglas, Nut- 

 tall, and (on the Spokane River) by the naturalists of Wilkes's Explor- 

 ing Expedition. Also by Dr. Lyall, on the Kootenay River, in 1861. 

 Corolla more slender than in Lindley's figure. 



52. P. HETERANDER, Torr. & Gray in Pacif. R. R. Exped. 2, 

 p. (9) 123, t. 8. Glaber (calyce minute puberulo excepto), virgatus ; 

 foliis lanceolatis seu lineari-oblongis argute denticulatis ; panicula spi- 

 ciformi interrupta gracili ; cymulis subsessilibus ; sepalis lanceolatis ; 

 corolla albida semipollicari, tubo parum ampliato ; filamento sterili 

 quandoque antherifero. — Sierra Nevada, interior of California. 



h. Subintegrifolii, laxiflori, pedunculis 1 - 3-floris ; corolla bilabiata. 



53. P. TVhippleanus (sp. nov.). Pedalis; caule debili fohisque 

 membranaceis ovatis oblongisve subserrulatis glabris ; panicula parva ; 

 pedunculis plerisque oppositis 1- 3-floris; sepalis lineari-lanceolatis 

 longe attenuatis laxis cum inflorescentia viscoso-pilosis; corolla polli- 

 cari superne valde ampliata bilabiata, labio superiore breviore suberecto 

 bilobo, inferiore trilobo intus parce barbato ; filamento sterili glaber- 

 rimo apice dilatato uncinate. — Arroyas in the Sandia Mountains, 

 New Mexico, east of the Rio Grande, Dr. J. M. Bigelow, in Whipple's 

 Expedition, Oct. 1853. Stem slender, apparently diffuse from a de- 

 cumbent base, leafy. Leaves thin ; the radical ones petioled, 3 inches 

 long ; the cauline 2-1^ inches long, sessile, or the upper partly clasp- 

 ing by the rounded base, ovate-acuminate ; only the floral ones reduced 

 in size, these with the peduncles and flowers more or less viscid-pubes- 

 cent. Peduncles nearly as long as the floral leaves : pedicels short. 

 Sepals 5 lines long, very attenuate, even narrower than those of P. 

 Jamesii ; the corolla almost as ampliate as that of P. cristaius, but 

 very distinctly bilabiate, its color not recorded. Except for the beard- 

 less filament and broader and thin leaves, this should stand with the 

 above-named species. 



VOL. VI. 9 



