96 SCROPHULARINE^. 



[Pentstemon. 



was induced to believe that Dr. Graham's plant was the same as one of Mr. Drummond's, of which I then 

 had a drawing, (P. gracilis, Nutt.); and I inadvertently gave Dr. Graham's description with that species 

 With P. glaucus I am entirely unacquainted, unless it be, as I cannot help suspecting, from the figure and 

 the two hnes of hairs described by Dr. Graham within the under lip, a variety of P. pubescem. Flowers 

 vaned with white and purple. 



6. P. ovatus; herbaceus, floribus caule pedunciilisque glanduloso-pilosis, foliis cordato- 

 ovatis amplexicaulibus glabris grosse dentatis, inferioribus longe petiolatis, cordlis tubulo- 

 sis, filamento sterih apice barbato basi unidcntato. -Z)ok^/. in Bot. Mag. t. 2903. 



Hab Grand Rapids of the Columbia. Douglas. Wallamet River. Mr. ro/m/..- Flowers moderately 

 Jarge, of a bright ultramarine blue. ^ 



1. p. pruinosus; foliis cffisiis, radicalibus petiolatis integris dentatisve, caulinis dentatis 

 sessi .bus bracteis superioribus integris, floribus verticiUatis, calycibus bracteisque villosis 

 corolhs glabns calyce duplo longioribus, limbi laciniis rotundatis integris. {Lindl.)-Dougl. 



R Jd^'nl"/""" t '^" °''''r='"^° ^'''''- ^"'1 °° the high banks of the Columbia, near the Priest's 

 Rapid. X)oa^/ai(.— Flowers rather small, brilliant blue. 



8. P. Richardsonii; caule herbaceo, foliis sessilibus pinnatifidis, calvcibus glanduloso- 

 pubescentibus, laciniis ovatis acutis, corollas labio superiore bilobo, inferiore trilobo trans- 

 verso, pedunculis racemosis bi-trifloris. {LindL)~Dovgl. in Bot. Reg. t. 1121. Hook. Bot. 

 Mag. t. 3391. — /3. minor. 



Hab. On the Columbia and its tributary streams. 7?o«^fo*._Flowers large, purple. 



9. P. triphyllus; herbaceus humilis, foliis ternis quaternLsve glabris incisis, inferioribus 

 oblongis, floralibus integerrimis, pedunculis bi-trifloris calycibusque arachnoideis, corolla 



acinns oblong.s obtusis, labii inferioris aequalibus. {Lindl.)-Dougl. in Bot. Reg. t. 1246. 



Hab. Rocks of the River Wallawallah. near the base of the Blue Mountains, N. W. America Dounlas 

 Flowers much smaller than the preceding, bluish purple. Douglas. 



10. P Scouleri; suffruticosus, foliis obovato-lanceolatis serrulatis supremis integerrimis 

 cbtusis, floribus sohtarns racemosis, corollis (speciosis) ventricosis serrulatis, antbeWs lana- 

 tis. [Lingl.)—Dougl. in Bot. Reg. t. 1277. 



Hab. N.W. Coast of America. Menzies in Herb, nostr. Rocks and mountains about the Kettle Fall, 

 btomeTbtr"" ^ ''°'"'"'''^- ^-^'--^'°-" '-^e. Pa'e purple. In drying, the wht pu"; 



11. P. densatus; caule subsimplici ascendente glabro, foliis inciso-serratis, radicalibus 

 ovato-oblongis, prox.m,s spathulatis, caulinis oblongis acutis sessilibus, supremis subinte- 

 fJ'LT S"I tlr ^ '"''""' '''"''' '"P""'"'^ nnnonhus. (Lindl.)-Dougl. 



Hab. Lewis and Clarke's River, between the Forks and its confluence with the Columbia and at tho 

 junction of Spokan River. Douglas.~Floy.-ers pale sulphur-yellow. ^^olumb.a. and at the 



12. P. con/ertus; foliis integerrimis glabris, radicalibus spathulatis acuminatis longe pe- 



