SCROPHULARIACE^E. 



395 



4. Pentstemon deustus, Dough 



Pentstemon deustus, Dougl. in Bot. Keg. t. 1318 ; Hook. Fl. Bor.-Am. 2, p. 96 ; 

 Benth. in DC. Prodr. 10, p. 328. 



Hab. Spokane River, Washington Territory. — A small-flowered 

 species, remarkable for the strong sharp serratures of the leaves. 

 Stem woody at the base. 



5. Pentstemon conferttjs, Dougl 



Pentstemon confertus, Dougl. in Bot. Mag. t. 2954 ; Benth. in DC. Prodr. 10, pp. 

 328 & 593. 



Hab. Interior of Washington Territory and Oregon : common. 



6. Pentstemon corymbosus, Benth. 



P. pubescens; caule e basi ramoso; foliis oblongis basi in petiolem brevius 

 attenuatis obtusiusculis integerrimis vel remote denticulatis ; cyma ter- 

 rninali corymbiformi ; corollce tubo angusto calyce subtriplo longiore; 

 limbo bilabiato ; filamento sterili barbato. 



Var. humilis, fruticulosus ; foliis angusto-oblongis ; cyma nuda pluri- 

 Jlora : forma normalis Benth. 



Var. robustus, fere herbaceus; foliis ovato-oblongis ; cyma basi foliosa 

 rnultiflora. 



Hab. The smaller variety, Southern Oregon, probably near the 

 borders of California ; the larger variety, Hills of the Upper Sacra- 

 mento, California. The low variety is identical with Coulter's No. 

 629, from which Bentham's description of P. corymbosus was doubtless 

 taken. In an authentic specimen of that plant, however, the sterile 

 filament is not smooth, but strongly bearded. Our specimens of this 

 variety are clearly shrubby, for, besides showing the woody structure, 

 they bear vestiges of the inflorescence of the preceding season 



