72 PROCEEDINGS OF -THE AMERICAN ACADEMY 



48. P. PRUINOSUS, Dougl. Pubescens ; foliis cassiis ; inflorescentia 

 (saspe quasi verticillata) et prcesertim sepalis (lanceolatis longe attenu- 

 ato-acuminatis) viscoso-villosis ; corolla laste cyanea. — Priest's Rapids 

 of the Columbia River ; found only by Douglas, long ago lost from the 

 gardens. 



b. Integrifolii ; foliis glaberrimis fere semper integerrimis, caulinis lan- 

 ceolatis oblongisve ; sepalis saltern marginibus albo-scariosis ; pa- 

 lato vulgo barbato ; thyrso spiciformi interrupto ssepius quasi 

 verticillastrifloro. 



49. P. ATTENUATUS, Lindl. Bot. Reg. t. 1295. Sesqui - bipedalis ; 

 foliis raro paucidenticulatis ; inflorescentia villosa seu pi. m. viscoso- 

 pubescente ; cymis plerisque breviter pedunculatis ; sepalis ovato- 

 lanceolatis anguste scarioso-marginatis ; corolla ochroleuca vel caeruleo- 

 purpurea ultra-semipoUicari. — Lewis and Clarke's or Kooskooskie 

 River. The figure in the Bot. Register depicts the flowers as ochro- 

 leucous. Bentham writes, " corolla sulphurea." But in similar speci- 

 mens collected on the Kooskooskie by the naturalists of Wilkes's Expe- 

 dition it is noted that the " corolla is blue " ; while Hooker remarks that 

 those of Douglas's specimens were purple. The color is probably vari- 

 ous. Mr. Spalding's specimens from Clearwater, in the same district, 

 have the inflorescence and calyx varying from rather slightly viscid- 

 pubescent to merely puberulent ; the color of the flowers not recorded. 



50. P. CONFERTUS, Dougl. ; Lindl. Bot. Reg. t. 1260. Glaberri- 

 mus, semi - sesquipedalis, strictus ; floribus dense glomeratis ; cymis 

 prseter infimas fere sessilibus ; sepalis lato-lanceolatis seu ovatis latis- 

 sime albo-scariosis margine soepius eroso-dentatis vel laciniatis aut 

 acutis aut in acumen saepe longum viride productis ; corolla angusta 

 5-6 lin. longa, sulphurea. — Interior of Oregon and Rocky Moun- 

 tains. 



/3. c^RULEO-PURPUREUS. (P. procerus, Dougl., in Bot. Mag. t. 

 2954; Bot. Cat. t. 1616. P. Tolmiei, Hook. Fl. Bor.-Am. 2, p. 97. 

 P. micranthus, Nutt. in Jour. Acad. Philad.) Spithamajus ad bipeda- 

 lem ; corolla cteruleo-purpui-ea. — Plains of the Saskatchawan, and 

 through the Rocky Mountains to the coast range of Oregon and 

 British Columbia. I find nothing beyond the color of the flowers to 

 distinguish this from P. confertus ; and the name P. procerus is sin- 

 gularly inappropriate for a plant like this, never tall, and ordinarily 

 one of the lowest of the genus. The sepals are most variable, and 

 the variations are not in relation with the color of the corolla. 



