li;;<; ADDITIONS AND CORRECTIONS 



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7-9 mm. long. Lance-linear, acuminate, not scarious, densely puberulent; 

 corolla 15-1S mm. long, sparingly glandular-puberulent without, blue; 

 anther-cells minutely puberulent, opening throughout, the suture fim- 

 brillate; sterile stamen moderately bearded with short yellow hairs. 

 Slopes: rtuh e Nev. Son. My-Je. 



771 For P. Jnmcsii Benth. read Pentstemon auriberbis Pennell, the former 

 being the same as P. similis A. Nels. of New Mexico. 



772 Before P. pumilus insert: 



42a. Pentstemon parviflorus Pennell. Stem 1.5-2 dm. high, 

 cinereous-pubcrulent with reflexed hairs, sparingly glandular in the 

 inflorescence; leaves linear to linear-lanceolate, up to 5 cm. long, 3-5 mm. 

 wide, the lower petioled, the upper sessile and somewhat clasping; sepals 

 8 mm. long, lanceolate, acuminate, glandular-hirsute; corolla 12 mm. 

 long, glandular-puberulent without, pubescent over the base of the anterior 

 lobe within; anther-cells minutely puberulent; sterile stamen densely 

 yellow-bearded. Hills: sw Colo. Son. Jl. 



772 Under P. Rydbergii A. Nels. add as a synonym: Pentstemon aggregatus 

 Pennell, a form with somewhat longer corolla, 15-18 mm. long, and less 

 scarious sepals. 



773 Under P. brevifolius insert, as a synonym: Pentstemon obtusifolius 

 Pennell. 



773 Transfer the synonym P. veronicaefolius from 53. P. pinetorum to 58. 

 P. attenuatus. 



773 Under P. pseudoprocerus. Dr. Pennell regards P. pseudohumilis a 

 synonym of this. 



775 After P. Thompsonae insert: 



75a. Penstemon retrorsus Payson. Stems tufted, ascending, 

 1-2 dm. high, from a short caudex, cinereous-pubescent with reflexed 

 hairs; leaves cinereous-pubescent, entire, the lower oblanceolate, the upper 

 lanceolate, 2.5-3.5 cm. long, 34 mm. wide; inflorescence narrow; sepals 

 3-4 mm. long, ovate -lanceolate, not scarious-margined, cinereous; corolla 

 blue, 1.5-2 cm. long, glandular-puberulent without, pubescent over the 

 bases of the anterior lobes within; anther-cells glabrous, opening through- 

 out; sterile stamen bearded most of its length. Dry hills: Colo. Son. Je. 



775 After P. xylus insert: 



77a. Pentstemon glabrescens Pennell. Stems tufted, prostrate, 

 spreading, 7-15 cm. long, puberutent with reflexed cinereous hairs; leaves 

 light-green, thick, sparingly puberulent or glabrate, linear, 1-1.5 cm. long, 

 0.7-1 mm. wide; sepals 5-8 mm. long, lance-ovate, acuminate, with more 

 or less scarious and erose margins; corolla 16-18 mm. long, glandular- 

 puberulent without, slightly pubescent at the base of the anterior lobes 

 within, sky-blue; anther-cells glabrous, opening throughout. Mesas: 

 s Colo. Son. Je-Jl. 



775 After P. teucroides, insert: 



78a. Penstemon abietinus Pennell. Stems tufted, branched, pros- 

 trate, less than 5 cm. tali, densely grayish-puberulent or glabrous, entire, 

 linear, 1-1.2 cm. long, about 1 mm. wide; sepals 4-5 mm. long, lanceolate- 

 attenuate, acuminate, with slightly erose scarious margins, slightly pub- 

 erulent; corolla 12-15 mm. long, blue; anther-cells glabrous, opening 

 throughout; sterile stamen densely yellow-bearded. Canons: c Utah. 

 Jl. 



776 In the distribution of P. coccinatus, for "se Colo. " read sw Colo. 



777 Under P. Tweedyi add as a synonym: Pentstemon Albrightii A. Nels. 

 779 After M. Len-isii insert: 



8a. Mimulus ringens L. Perennial; stem 3-12 dm. high, somewhat 

 flattened, 4-angled; leaves lanceolate or elliptic, cordate-clasping, serrate, 



