Pentstemon.] SCROPHULARlNEiE. 95 



9. C ratnosa; foliis ovatis acuminatis serratis, superioribus amplexicalilibus cordatis, 

 pedunculis nudis trifloris pubescentibus. Dough in BoL Reg. t 1211. 



Hab. Mountain woods near springs and rivulets, N.W. America. Douglas (Bot Beg.) 



6. PENTSTEMON.* VHeriU Benth. 



Cor, lacinia; subplanse. Stamen quintum praesens sterile. Semina nuda. Benth. L c, 



1. P, glandule sus ; elatus glanduloso-pubescens, foliis radicalibus ovatis grosse dentatis, 

 caulinis cordatis acutis amplexicaulibus subintegerrimis, calyce capsulam glabram subae- 

 quante, corolla speciosa, filament! rudimento glabro. — LindL Bat, Beg, t. 1262. 



Hab. Undulating ground of Lewis and Clarke's River, near the Forks, among small stones (not com- 

 mon). J)ouglas,~'Mr, Douglas' native specimens are in fruit. The flowers as shown in the Bot. Reg. are 

 very large, and pale purple. 



2. P, serrulatus (Menz. ms.); caule glabro, foliis omnibus argute serratis superioribus 

 ovatis subhastatis, panicula bi-trifurcata, filamento sterili barbato. Sm, in Bees' Cycl. n. 5. 



Hab, N.W. Coast of America. A, MenzieSf Esq. — My specimens of this are not very perfect; but it 

 seems to have many characters in common with the following. 



3. P, diffusus; caule ramoso, foliis ovato-oblongis glabrJs insequaliter serratis, pedunculis 

 axillaribus multifloi'is, calycibus turbinatis laciniis laceris aristatis. DougL in Bot, Reg. 

 t, 1132. 



Hab. Common on limestone Rocks of the Columbia at the Grand Rapids. Douglas, — Flowers nu- 

 merous, large, purple. 



4. P, venustus; caule suffruticoso erecto glabro, foliis sessilibus rectis ovato-lanceolatis 

 acuminatis denticulatis glabris, floribus paniculatis, corollis ventricosis ciliatis, calycibus 

 glaberrimisj antheris pilosis. [LindL) — DougL in Bot Reg, t. 1309. 



Hab. Gravelly channels of rivulets near the Blue Mountains and near the source of the Wallawalla 

 River. — This fine species, with large pale purple flowers, bears the name of P. suffruticosus, Dougl. ras. in 

 my herbarium. Dr. Lindley points out its near affinity with P. diffusus^ from which, he observes, it differs 

 '* caule magis erecto, foliis sessilibus longioribus rectioribus, corollse colore obscuriore, calycibusque gla- 

 berrimis." 



5. P. glaucus; caule herbaceo glabriusculo, foliis omnibus glaberrimis radicalibus lan- 

 ceolatis petiolatis integerrimis denticulatisve, caulinis bracteisque ovato-lanceolatis sessili- 

 bus amplexicaulibus, panicula thyrsoidea, corollis inflatis calycibusque extus glanduloso- 

 pubescentibus, filamento sterili porrecto barbato. [LindL) — Grah. in James. Journ.July, 

 1829. p, 348. Bot Beg. t 1286, — P. gracilis. Bot, Mag.foL 2945. as to the description^ 

 not the figure, 



Hab. According to Dr. Graham, the seeds of this were sent to Edinburgh by Dr. Richardson, from Mr. 

 Drummond's collection; but it does not appear to exist in the Herbarium. B7 some misunderstanding, I 



• Of this difficult, and now (mainly by the labours of Mr. Douglas) extensive genus, I gladly avail myself of the 

 characters drawn up by Dr. Lindley, iu the Bot. Reg., from living specimens of the majority of the species. The 

 distinguishing marks are with difficulty recognizable in dried specimens. 



