60 PEOCEEDINGS OF THE AMERICAN ACADEMY 



lislied with a character, and applied by Pursh to a different species ; so 

 that Pursh's good name has priority, and is altogether to be prefered. 

 P. Gordoni, Hook. Bot. Mag. t. 4319.) Glaberrimus ; foliis sajpius glau- 

 cescentibus, caulinis lanceolatis seu ovato-lanceolatis ; sepalis late ovatis 

 margine submembranaceis aut muticis aiit acumine nunc brevissimo 

 nunc longiusculo terminatis ; filamento sterili apicem versus breviter 

 hirsute, baud raro in stirpibus tarn indigenis quam cultis pilis evanidis 

 glabro. — Upper Missouri to the mountains of Utah and New Mexico. 



iS. occiDENTALis. {P. speciosus, Dougl., Lindl. Bot. Eeg. t. 1270.) 

 Fere var. a ; foliis caulinis vulgo angustioribus ; antheris cum filamento 

 sterili glabris. — Interior of Oregon, in and near the Rocky Mountains. 



y. ALPiNUS. {P. alpinus, Torr., Benth. in DC. Prodr.) Humilior 

 (4-12-poll.), strictior; sepalis e basi ovata seu oblongo-lanceolata sen- 

 sim longe acuminatis. — Rocky Mountains, on both sides. (No. 259, 

 coll. Parry.) This has the anthers and the tip of the sterile filament 

 more commonly or more abundantly hairy than in the ordinary P. gla- 

 ber, into which it manifestly passes. The acuminate portion of the 

 sepal green, firm, and marginless. 



8. CYANANTHUS. P. cymiantlius, Hook. Bot. Mag. t. 4464, raised 

 from seeds from the upper valleys of the Platte, in the Rocky Moun- 

 tains, I know only from the published figure. I had mistaken it for 

 a large form of P. acuminatus, in Botany of Mexican Bound. Survey ; 

 but it clearly must stand next to P. glaber, var. alpinus ; from which it 

 appears to differ only in its greater height and robustness, large and 

 dense thyrsus, and its bi'oader (cordate-ovate) and acuminate upper 

 cauline leaves. Probably it is no more than a particularly well-grown 

 state of the above plant. All the varieties are showy, and the species 

 is one of the handsomest in cultivation. 



12. P. STRiCTUS, Benth. in DC. Prodr. Glaberrimus, subglaucus, 

 virgatus ; caule gracili ; panicula angustata ; foliis caulinis longe linea- 

 ribus ; floribus vix evolutis fere P. glabro sed multo minoribus. — Wind 

 River Mountains, near the sources of the Sweet Water of the Platte, 

 Fremont. The specimen is too incomplete for much investigation. It 

 may prove to be an extreme form of P. glaber. 



13. P. Fremonti, Torr. & Gray, ined. Pruinoso-puberulus, spi- 

 thamseus et ultra ; foliis imis spathulatis, caulinis lanceolatis sessilibus ; 

 panicula stricta spiciformi nuda, cymulis approximatis plurifloris bre- 

 vissime pedunculatis ; sepalis oblongo-ovatis acutis margine membra- 

 naceis; corolla (9 lin. longa) anguste infundibuliformi vix bilabiata; 



