ADDITIONS AND CORRECTIONS 1133 



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Anther-cells opening abcmt 3 i their length. 



Corolla-throat tubular; limb nearly regular. 



12a. P. leptantus 

 Corolla-throat evidently inflated; limb 2-lipped 



23b. P. laevis. 

 Plant puberulent. . 22c. P. Tideslromii. 



765 Instead of the lines in the key referring to 31. P. secundiflorus and P. 

 Fendleri insert: 



Corolla 2-2.5 cm. long; sterile stamen strongly enlarged at the tip, bearded with 



golden hairs. 

 Leaves very glaucous, scarcely veined; corolla lavender-pink; inflorescence 



secund. 31. P. secundiflorus. 



Leaves slightly glabrous, strongly veined; corolla bluish; inflorescence not 



secund. 31a. P. Osterhoutii. 



Corolla 1.5-2 cm. long; sterile stamen slightly enlarged, bearded with yellowish 

 hairs. 32. P. lentus. 



765 Instead of the lines containing 40. P. Cleburnei and 41. P. Moffatti insert 



Corolla throat strongly inflated, lanose within anteriorly; sterile stamens bearded 



with long hairs; corolla 2-2.5 cm. long. 40. P. Cleburnei. 



Corolla throat moderately inflated, slightly pubescent to glabrous within; sterile 



stamen bearded with short hairs. 

 Inflorescence, stem above, and calyx glandular pubescent ; basal leaves 



3-6 mm. long, plant usually more than 1 dm. high. 

 Basal leaves ovate; corolla 15-17 mm. long. 41. P. Moffatlii. 



Basal leaves lanceolate; corolla 18-22 mm. long. 



41a. P. Paysonii. 



Inflorescence, stem throughout, and calyx cinereous puberulent, not glandu- 

 lar; plant less than 1 dm. high; corolla 15-18 mm. long. 



41b. P. dolius. 



769 After P. Fremontii insert: 



12a. Pentstemon leptanthus Pennell. Stems several, 1.5-2.5 cm. 

 high, canescent-puberulent below, glabrate above; leaves dull-green, 

 obscurely veined, densely cinerous-puberulent, the lower ones with lan- 

 ceolate blades, obtuse, 5-6 cm. long, acutish, 3-5 cm. long, 0.5-1 cm. wide; 

 inflorescence narrow; sepals 3 mm. long, ovate, acute, slightly scarious- 

 margined, slightly erose, glabrate; corolla 13-15 mm. long, the throat 

 slightly inflated; anther-cells glabrous; sterile filament moderately bearded. 

 Dry hills; c Utah. 



12b. Pentstemon Jonesii Pennell. Stems several, 4-8 dm. high, 

 finely pubescent throughout with retrorse hairs; lower leaves petioled, 

 7-9 cm. long, spatulate-oblanceolate to obovate, emarginate; upper 

 stem-leaves ovate, rounded-clasping, finely pubescent; inflorescence narrow; 

 sepals 3-4 mm. long, broadly ovate, glabrous, abruptly short-caudate, 

 with erose scarious margins; corolla 23-25 mm. long, the tube gradually 

 enlarging into the cylindric throat, glabrous within, blue; anther-cells 

 nmbrillate on the suture, minutely puberulent; sterile filament glabrous 

 or nearly so. Dry places: S Utah. Son. May-Je. 



769 After P. subglaber insert: 



13a. Pentstemon saxosorum Pennell. Stems several, 1-8 dm. 

 high, slender, glabrous; leaves glabrous, the lower ones with lanceolate 

 blades, 5-7 cm. long, petioled, the upper broadly lanceolate, clasping, 

 longer than the internodes, 3-9 cm. long, 0.5-2 cm. wide; inflorescence 

 narrow, secund; sepals 5-7 mm. long, ovate, with a caudate tip, with 

 scarious denticulate margins, glandular-puberulent; corolla 16-22 mm. 

 long, dark blue, sparingly glandular-puberulent without, the throat 

 strongly inflated; upper lobes 5-6 cm. long, united %-}/2 their length; 

 anther-cells pubescent on the sides with short hairs; sterile stamen bearded 

 above with short yellow hairs. Rocky slopes: s Wyo. Colo. Mont. 

 Jl-Au. 



769 After P. cyanocaulis insert: 



14a. Pentstemon scariosus Pennell. Stems several, 2-3 cm. high, 

 sparse!}- glandular-puberulent in the inflorescence; leaves dull green and 

 glaucous, glabrous, the lower ones petioled, broadly oblanceolate, 6-7 cm. 



