764 SCROPHULARIACEAE 



^ 



Corolla strongly ventricose-gibbous ; tube proper very 



short. VI. Halliani. 



Corolla not ventricose-gibbous; tube gradually dilated 

 into a funnelform throat. VII. Acuminati. 



Plants glandular at least on the inflorescence. 



Stem-leaves distinctly petioled; blades broadly ovate or 



suborbicular, coarsely dentate. VIII. Petiolati. 

 Stem-leaves sessile or nearly so; blades linear to lanceo- 

 late or oblong. 

 Stem glabrous below. IX. Wippleaxi. 



Stem glandular or puberulent. X. Cristati. 



Corolla-tube almost cylindrical or slightly widening upwards; corolla 



less than 2 cm. long. 

 Stems several from a branching rootstock, low and weak. 



XI. HARBOtJRIAXI. 



Stems solitary or a few from a taproot or short caudex. 



XII. CONFERTI. 



Leaves hnear-fihform. 



Corolla-hmb not strongly oblique; sterile stamen bearded. 



„ XIII. LARICIFOLn. 



Corolla-hmb strongly oblique; sterile stamen glabrous. 



T^. . « . XIV. Ambigui. 



Plant sutrruticose at the base. XV. Caespitosi. 



Anthers dehiscent only on their proximate half, the distal half of the cells sac- 

 cate, remaining unopened. 

 Plants densely glandular-pubescent throughout. XVI. GlandULOSI. 



Plant glabrous or puberulent; if at all glandular only in the inflorescence. 



r^ 11 J 1 ^ . . , XVII. AZUREI. 



Corolla red, almost tubular. 



Anthers opening nearly their whole length. 



Corolla scarcely bilabiate; lower lip not reflexed. XVIII. PuxiCEi. 



Corolla strongly bilabiate; lower lip reflexed. XIX. Barbati. 



opemng only on their proximal part. XX. Bridgesiani. 



Anthers 



■ n 



I. Fruticosi. 



Leaves more or less distinctly petioled. broadest at or above the middle, not long-acumin- 

 ate. 



Leaf-blades obovate or oval, obtuse or the upper acutish. 



Plant 2-5 dm. high, erect. 1 p. fruticosus. 



Plant depressed, less than 2 cm. high. 



Corolla 3.5 cm. long; leaf-blades 1-3 cm. long. 2. P. elUpticus. 



T i. ^CoroUa 2.5-3 cm. long; leaf-blades 1 cm. long or less. 3. P. Menziesii, 

 Leaf-blades oblanceolate, all acute. 



Leaf-blades oblanceolate, entire or some rarely slightly denticulate; calyx-lobes 



lanceolate. 5-10 mm. long. 4. P. crassifolius. 



Leaf-blades very narrowly oblanceolate. sharply dentate; calyx-lobes lance-subu- 

 late, 10-15 mm. long. 5. p. Scouleri. 



Leaves sessile, long-attenuate, broadest at the base 



Leaves glabrous; calyx 10-12 mm. long; corolla 3.5-4 cm. long. 6. P. Lyallii. 

 Leaves grayish-pilose ; calyx 12-15 mm. long; corolla 2.5-3.5 cm. long. 



7. P. linearifolius. 



11. MOXT 



Leav^ narrowly lanceolate; corolla 3.5-4 cm. long. 6. P. Lyallii. 



Leaf 



8. P. montanus 



III. GL-VBRI. 



Anthers bearded, with long vHlous hairs; inflorescence secund. 



corolla-tube decidedly shorter than the throat; corolla deep blue. 



CaJyx-lobes oval or ovate, acute or obtuse, glabrous. 9. P. strictus. 

 Calyx-lobes lanceolate, long-acuminate, minutely puberulent. 



r^^^^n 4. ^ . . 10. P. slrictiformxs. 



Ar,tV;2rf '^*i '^^^J'}y as long as the throat; corolla pale blue. 11. P. comarrhenus. 

 Anthers not long-villous. 



Anthers sparingly short-hirsute. 



Calyx-lobes ovate or lanceolate, acuminate. 

 Stem-leaves all lanceolate. 



Calyx-lobes with narrow scarious margins, not auriculate. 



Corolla about 1.5 cm. long; limb almost regular; tube slightly ventn- 



cose; plant usually puberulent. 12. P. Fremontii, 



CoroUa 2 cm. long or lon-er; limb distinctly 2-lipped; plant glabrous. 

 Corolla about 2.5 cm. long; upper stem-leaves Unear-lanceolate. 



13. P. subglaber. 

 Corolla about 2 cm. long; upper stem-leaves broadly lanceolate to 

 ovate. 14 p. cyanocauhs. 



Calyx-lobes with very broad scarious margins, forming erose basal axu-icles. 

 04. 1 , 15. P. alpinus. 



Stem-leaves broadly ovate or subcordate. 



Calyx-lobes with narrow or no scarious margins, not auriculate. 



