PIPER FLORA OF THE STATE OF WASHINGTON. 497 



1. Tonella floribunda A. Gray, Proc. Am. Acad. 11: 92. 1876. 



Type locality: " Willow thickets of the valley of the Kooskooskee, in the western part 

 of Idaho." Collected by Spalding and by Geyer. 



Range: Western Idaho and adjacent Oregon and Washington. 



Specimens examined: Without locality, Brandegee 1003; Almot'a, Piper 1655; Wawa- 

 wai. Lake S7b; Elmer 103; Asotin Creek, Hunter 92. 



Zonal distribution: Upper Sonoran. 



2. Tonella collinsioides Nutt.; A. Gray, Proc. Am. Acad. 7: 378. 1868. 

 Collinsia tenella Benth.; DC. Prod. 10: 593. 1846, not C. tenella (Pursh) Piper. 

 Tonella tenella Heller, Muhlenbergia 1: 5. 1900. 



Type locality: "In sylvis juxta flum. Oregon." Collected by Nuttall. 

 Range: California to Washington, in the coast region. 



Specimens examined: West Klickitat County, SvJcsdorf, April 27, 1881, May 12, 1895; 

 Lyle, Svksdorf, April 14, 1890. 



Zonal distribution: Humid Transition. 



PENTSTEMON. Wild foxglove. 

 Anthere woolly. 



Foliage glaucous. 



Branches erect ; leaves oblong to ovate, sessile, gla- 

 brous ; corolla lilac-purple \. P. harrettae. 



Branches prostrate; leaves broadly ovate, petioled, 



puberulent; corolla rose-crimson 2. P. rupicola. 



Foliage green, not glaucous. 



Plants prostrate or decumbent; leaves small, oval to 

 orbicular; flowering stems 5 to 20 cm. high. 



Leaves serrate 3. P. menziesii. 



Leaves entire 3a. P. menziesii davidsonii. 



Plants usually erect, taller; leaves narrow. 



Leaves lanceolate, attenuate-acuminate, not re- 

 duced on the flowering stems 4. P. lyallii. 



Leaves lanceolate, acute, entire or serrate, much 

 reduced on the flowering stems. 



Calyx lobes lanceolate, 0.5 to 1 cm. long. . . 5. P.fmticosus. 

 Calyx lobes subulate-lanceolate, 1 to 1.5 



cm. long 6. P. scouleri. 



Anthers not woolly. 



Cells of the anthers splitting their whole length or nearly 

 the whole. 



Plants glabrous, more or less glaucous. 



Leaves coriaceous, the upper acuminate ; corolla 



1.5. to 2 cm. long 7. P. acnminatus. 



Leaves not coriaceous, none acuminate; corolla 



2.5 to 4 cm. long 8. P. glaher. 



Plants not glaucous, mostly more or less pubescent. 

 Margins of the leaves dentate. 



Leaves narrow, oblong, lanceolate, or o\>- 

 lanceolate. 

 Corolla blue-purple, 1.5 to 2.5 cm. long. 9. P. erianthera. 

 Corolla white, 1 to 1.5 cm. long. 



Leaves oblong to lanceolate, 

 coarsely dentate; sterile fila- 

 ment beardless 10. P. deustus, 



29418—06 Ji 32 



