FIGWORT FAMILY 735 



Subsection a. Procebi, 



Corolla not yellow, or if yellow the inflorescence glandular (except in a form of P. Tolmici) ; bracts not scari- 

 ous-margined nor erose. 

 Corolla 6-10 mm. long (to 11 mm. in P. washtngtonensis), more or less declined; anther-sacs rotund, 

 essentially explanate, mostly O.S mm. or less long. 



Inflorescence not at all glandular. 



Leaf-blades lanceolate or wider, not recurved. 



Basal rosette feebly developed; calyx -lobes caudate-tipped, 3-6 mm. long. 



1. P. procerus. 



Basal rosette well developed; calyx-lobes caudate-tipped only in ssp. typicus, usually less than 

 3 mm. long. 2. P. Tolmiei. 



Leaf-blades narrowly linear-lanceolate, more or less recurved; calyx 1.4-2 mm. high, the lobes 

 truncate or mucronate. 3. P. ctntcola. 



Inflorescence glandular-pubescent. 



Rosette undeveloped; stems 2.S-7 dm. tall; calyx 1.7-3.3 mm. high, the lobes acute to acuminate; 

 corolla pale purplish blue or roseate to white. 4. P. Peckii. 



Rosette well developed; stems less than 2.S dm. tall; calyx 4-6 mm. high, the lobes caudate- 

 tipped; corolla deep blue-purple. 5. P. washtngtonensis. 



Corolla 10 mm. or more long, horizontal; anther-sacs longer than broad, mostly more than O.S mm. long. 

 Inflorescence not at all glandular. 

 Herbage not glaucous. 



Anther-sacs dehiscent throughout and boat-shaped but not fully explanate nor pouch-shaped, 

 the suture essentially glabrous; corolla usually less than 15 mm. long and up to S mm. 

 wide pressed. 

 Flowers blue-purple; cymules dense. 



Stems relatively slender; leaves always entire; corolla only slightly ampliate, up to 

 4 mm. wide pressed, obscurely bilabiate, the palate yellowish-bearded. 

 Mostly less than 5 dm. tall; calyx mostly 5 mm. or less high and glabrous, the 



lobes acuminate. East of the Cascades. 6. P. oreocharis. 



Mostly more than S dm. tall; calyx mostly more than 5 mm. high and hirtellous, 

 the lobes attenuate. West of the Cascades. 



7. P. hesperius. 



Stems relatively stout; leaves occasionally denticulate; corolla more obviously am- 

 pliate and bilabiate, up to S mm. wide pressed, the palate white-bearded. 

 Washington. 8. P. Faseyanus. 



Flowers white; cymules not very dense. 9. P. pratensis. 



Anther-sacs not quite dehiscent throughout, pouch-shaped, the suture denticulate; corolla 

 mostly 15-20 mm. long and up to 7 mm. wide pressed; margin of calyx-lobes broadly 

 scarious and erose. 10- P. globosus. 



Herbage glaucous; anther-sacs narrowly ovate, dehiscent throughout but not explanate. Cascade 

 Range. H- •P- euglaucus. 



Inflorescence glandular-pubescent. 



Corolla relatively small and slender; leaves thin, not glaucous. California. 



Stems relatively low (mostly 2 dm. or less tall) : inflorescence prominently glandular, often 

 reduced to one cluster. High elevations. Sierra Nevada. 



12. P. heterodoxus. 



Stems taller (2-S dm.); inflorescence less glandular, of 2-6 clusters. Mid-altitudes, northern 

 California. 13. P. shastensxs. 



Corolla larger and more ampliate; leaves thicker. More northern. 



Herbage glaucous; corolla not lined within. Southern Oregon. 14. P. glaucinus. 

 Herbage not glaucous. 



Stems 3-9 dm. tall; leaves mostly acute, relatively thin; corolla 12-20 mm. long, pale 

 yellow to blue-purple, without prominent guide lines. 



IS. P. attenuatus. 



Stems 1-2.5 dm. tall; leaves mostly rounded, relatively thick; corolla 10-13 mm. long, 

 violet-blue, marked with guide lines within. 16. P. spathulatus. 



Corolla pale yellow; inflorescence glabrous; margin of calyx-lobes and bracts broadly scarious and erose. 



17. P. confertus. 



Subsection b. Humiles. 



Calyx 2-5 mm. high; corolla blue-purple, moderately bilabiate, the limb spreading, the palate moderately ridged; 

 staminode not prominently exserted; stems, at least, more or less pubescent below inflorescence. 

 Leaves essentially entire, cinereous-puberulent; stems densely cespitose. 



Limb of corolla narrow in ours, less than twice as wide as throat. California. 



18. P. humihs. 



Limb of corolla broad, at least twice as wide as throat. Oregon and Washington. 



19. P. cinereus. 



Leaves serrate (except in P. subserratus) and less densely if at all cinereous; stems less densely cespitose. 

 Cauline leaves narrowly linear-lanceolate, sessile by a relatively narrow base; corolla 15-21 mm. long. 



Wallowa County, Oregon. 20. P. elegantulus. 



Cauline leaves broader, sessile by a wide base, the upper cordate-amplexicaul. 



Inflorescence strongly glandular. Western British Columbia to western Oregon. 



Thyrsus narrowly paniculate, rather loose, not foliose; corolla 15-22 ram. long. West of the 



Cascades. 21. P. ovatus. 



Thyrsus strict, narrow, foliose below; corolla 10-16 mm. long. East of the Cascades. 



Stems 1-3 dm. tall; leaves mostly obviously toothed; anther-sacs ovate to rotund, 0.5- 



0.7 mm. long. 22. P. pruinosus. 



Stems 3-8 dm. tall; leaves entire or obscurely toothed; anther-sacs narrowly to broadly 

 ovate, 0.8-1.1 mm. long. 23. P. subserratus. 



Inflorescence lightly to moderately glandular. Eastern Washington and Oregon eastward. 



24. P. Wilcoxu. 



