ADDITIONS AND CORRECTIONS 1135 



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blue, glabrous without and within; anther cells minutely puberulent, 

 opening three-fourths their length; sterile filament bearded. Red sands: 

 s Utah. Son. 



22c. Pentstemon Tidestromii Pennell. Stem 3-5 dm. high, puber- 

 ulent, glabrate above; leaves pale green, somewhat glaucous, puberulent, 

 the lower ones oblanceolate, obtuse, 10-12 cm. long, 1-1.5 cm. wide, 

 petioled; stem-leaves clasping; inflorescence narrowed; sepals 3-5 mm. long, 

 narrowly ovate, with no or narrow scarious margins, glabrous; corolla 

 15-20 mm. long, glabrous, blue; anther-cells glabrous, opening nearly 

 throughout; sterile filament scarcely enlarged, bearded. Oak formation: 

 Utah. Je. 



770 Under P. Hallii addassynon} T m: P. uintahensis Pennell. Though Pennell 

 placed this species next to P. subglaber, no constant character distinguishes 

 it from P. Hallii. 



770 After P. Hallii insert: 



25a. Pentstemon parvum Pennell. Stems several, 5-10 cm. high, 

 puberulent; leaves green, puberulent, the lower oblanceolate to obovate, 

 acutish, 2-2.5 cm. long, 4-5 mm. wide, narrower, clasping at the base; 

 inflorescence narrow, raceme-like; sepals 4 mm. long, ovate, scarcely 

 scarious-margined, finely glandular-puberulent; corolla 2 cm. long, glandular- 

 puberulent without, glabrous within, blue, the throat inflated; anther- 

 cells opening throughout; sterile filament glabrous, slightly obovate. 

 High mountains: c Utah. Alp. Au. 



770 In P. pachyphyllus instead of "corolla 15-20 mm. long," read "15-18 

 mm. long," and after the description insert: 



27a. Pentstemon versicplor Pennell. Stems several, 2-3.5 dm. high, 

 glabrous, glaucous; leaves thick, glaucous, glabrous, and the lower ones 

 obovate, 3-4 cm. long, tapering below; stem-leaves cordate-clasping, 

 ovate, acute, 3-5 cm. long; sepals 5-6 mm. long, ovate, with scarious 

 margins, glabrous; corolla 2 cm. long, glabrous without, sparingly pubes- 

 cent at the base of the anterior lobe, pink, changing into blue; sterile 

 stamen with two lines of short golden hairs. Mesas: se Colo. Son. Je. 

 770 After P. secundiflorus insert: 



31a. Pentstemon Osterhoutii Pennell. Stems 4-8 dm. high, 

 glabrous, pale or glaucous; leaves glabrous and somewhat glaucous, veined, 

 the lower petioled, 1-1.5 dm. long, ovate, acute; stem-leaves clasping, 

 lance-ovate or ovate, acuminate, 5-9 cm. long; inflorescence narrow; 

 sepals 7-8 mm. long, ovate, acuminate, with broad scarious margins, 

 glabrous; corolla blue, 2 cm. long, glabrous without, pubescent over the 

 base of the anterior lobes within; sterile stamen densely bearded. Sage- 

 brush slopes: w Colo. Submont. My-Je. 



770 For P. Fendleri read Pentstemon lentus Pennell, and make following 

 amendations: stem 1-3 dm. high; corolla 18-20 mm. long; sterile stamen 

 densely yellow-bearded with short hairs. 



771 The authority of Penstcmon Cleburnei should be M. E. Jones. 

 771 After P. Moffatii insert: 



41a. Pentstemon Paysonii Pennell. Stems several, 8-15 cm. high, 

 cinereous-puberulent below with reflexed hairs, glandular above; leaves 

 cinereous-puberulent, the lower, 3-6 cm. long, the blades lanceolate, acute, 

 about equalling the petioles; stem-leaves lanceolate; inflorescence narrow; 

 sepals 8-9 mm. long, lanceolate, acuminate, slightly scarious-margined, 

 glandular puberulent without, glabrous within; anther-cells minutely 

 puberulent, opening throughout; sterile stamen moderately bearded with 

 rather short hairs. Rocky hillsides: w Colo. Son. Ap. 



41b. Pentstemon dolius M. E. Jones. Stem 2-12 cm. high, 

 cmereous-puberulent with reflexed hairs throughout; leaves cinereous- 

 puberulent, the lower lance-ovate, 2-5 cm. long, short-petioled; stem- 

 leaves sessile, oblanceolate 1-4 cm. long; inflorescence narrow; sepals 



