482 PROCEEDINGS OF THE ACADEMY OF [PaRT III 



B. Corolla scarlet, slightly fleshy, glabrous externally and within, 

 30-35 mm. long, the tube gradually expanding distally. Ster- 

 ile filament glabrous. Upper leaves widely connate. Plant 

 glaucous, forming winter rosettes, the stems strictly annual. 

 (Elmigera.) I. Centranthifolii. 1. P. murrayanus. 

 B B. Corolla purple, red, blue, or white, membranous, the throat 

 usually more abruptly expanding. Leaves all distinct. 

 (Eupensiemon.) 

 C. Leaf-blades broadly-linear to ovate, at least 2 mm. wide. 

 Corolla-throat straight or upcurved, relatively inflated. 

 Sterile filament bearded. Plants forming winter rosettes, 

 the stems strictly annual. 

 D. Corolla-throat inflated-rounded anteriorly, within glan- 

 dular-puberulent or glabrous. Seeds 2-3 mm. long. 

 E. Corolla glabrous externally and internally. An- 

 ther-cells oblong. Sterile filament enlarged 

 distally. Leaves entire, relatively thick, some- 

 what fleshy. Plants glaucous. II. Coerulei. 

 Corolla 40-45 mm. long, the tube much inflated, the 

 lobes slightly spreading. Sterile filament closely 

 short bearded near the apex. Capsule 20-25 mm. 

 long. Bracts obtuse to acute. 



2. P. grcmdiflorus. 

 Corolla 15-20 mm. long, lined with deeper color, the 



tube little inflated, the lobes strongly spreading. 

 Sterile filament relatively densely bearded dis- 

 tally. Capsule 10-16 mm. long. Bracts ac- 

 uminate. 

 Corolla pale-lavender, its lobes 3-4 mm. long. Ster- 

 ile filament slightly widening and moderately 

 bearded distally with dull-yellowish hairs. Cap- 

 sule 14-16 mm. long. Bracts broad, mostly 

 surrounding the fruits, becoming conspicuously 

 reticulate. Foliage dull-glaucous. 



3. P. buckleyi. 



Corolla blue, its lobes 4-5 mm. long. Bracts not 

 becoming reticulate. Foliage pale-glaucous. 



Sepals 6-7 mm. long, more attenuate. Sterile 

 filament slightly enlarging and moderately 

 bearded distally with short orange -yellow hairs. 

 Capsule 13-15 mm. long. Bracts, except the up- 

 permost, longer than the pedicels. Leaf-blades 

 linear to lanceolate, acuminate, longer than 

 the internodes. 4. P. angustifolius. 



Sepals 5-6 mm. long, acuminate. Sterile filament 

 more enlarged and usually more densely bearded, 

 the beard of golden-yellow hairs. Capsule 10-12 

 mm. long. Bracts shorter than the pedicels, often 



