736 SCROPHULARIACEAE 



Calyx 5-11 mm high; corolla lavender to purple or violet, strongly bilabiate, the short upper lip erect, the 

 longer lower lip spreading, the palate strongly ridged; staminode prominently exserted; herbage glabrous 

 below inflorescence. 

 Corolla 13-18 mm. long, 4-6 mm. wide pressed; calyx 4-7 mm. high; anther-sacs 0.8-1.1 mm. long. 



25. P. angutneus. 



Corolla 24-30 mm. long, 8-10 mm. wide pressed; calyx 6-9 mm. high; anther-sacs 1.2-1.4 mm. long. 



26. P. Rattann. 



Subsection c. Gairdnerani. 

 Corolla glabrous within, the limb small. 27. P. seorsus. 



Corolla glandular-pubescent within, the limb ample. 28. P. Gairdneri. 



Subsection d. Deusti. 



Corolla externally glandular, often glandular-puberulent but never pilose within, white or ochroleucus; seed- 

 coat thin, tight-fitting. 

 Leaves all opposite, the blades elliptic to lanceolate or oblanceolate, mostly acute and sharply serrate; inflo- 

 rescence unbranched. 29. P. deusttis. 

 Leaves usually ternate or irregular, sometimes opposite, the blades linear-lanceolate to spatulate, less sharply 

 serrate to entire; inflorescence usually branched. 30. P. variabilis. 



Corolla externally glabrous, pilose within on lower lip, pink; seed-coat thick, spongy. 



31. P. Tracy t. 



Subsection e. Arenarii. 

 Represented by a single species. 32. P. albomarginatus. 



Section 2. Ericopsis. 



Herbage cinereous-puberulent throughout in ours; stems 15 cm. or less tall; corolla tubular-funnelform, the 

 limb not oblique, the lips not longer than the width of the throat. 

 Densely cespitose; corolla 2-ridged on floor of throat, the upper lip erect, the lower lip spreading; leaves 



spatulate-oblong. Subsection /. Caespitosi. 



Stems erect from a woody branched but not creeping caudex; corolla not plicate within throat, the lips about 

 equal and spreading. Subsection g. Linarioides. 



Herbage glabrous throughout in ours; stems 25-60 cm. tall; corolla salverform, the oblique limb with lips three 

 times as long as the width of the throat. Subsection h. Ambigui. 



Subsection /. Caespitosi. 

 Represented by a single species. 33. P. Thompsoniae. 



Subsection g. Linarioides. 

 Represented by a single species. 34. P. californicus. 



Subsection h. Ambigui. 

 Represented by a single species. 35. P. Thurberi. 



Section 3. Aurator. 



Corolla pinkish or reddish; staminode included; ovary glabrous. 



Anther-sacs not explanate, 1.3 mm. long; corolla 14-20 mm. long, somewhat ventricose. 



36. P. monoensis. 



Anther-sacs explanate, 0.5 mm. long; corolla 11-14 mm. long, narrowly tubular. 



37. P. calcareus. 



Corolla lavender to purple or bluish; staminode exserted. 



Ovary and capsule glabrous; staminode densely bearded with short stiffish deep orange hairs. 



38. P. miser. 



Ovary and capsule glandular-puberulent apically; staminode densely bearded with long soft yellow hairs 

 or rarely glabrate. 



Anther-sacs peltately explanate, as broad as long, the line of contact Long. 



39. P. eriantherus. 



Anther-sacs not explanate, much longer than broad, the line of contact short. 



40. P. Whitedii. 



Section 4. Habroanthus. 



Anther-sacs 1.3-1.5 mm. long, straight or crescentic but never sigmoid-curved, opening nearly throughout; 



corolla 22-27 mm. long. 41. P. payettensis. 



Anther-sacs 2-2.4 mm. long, sigmoid-curved, opening partially; corolla 26-32 mm. long. 



Upper cauline leaves linear-lanceolate; anther-sacs glabrous in ours. 42. P. speciosus. 



Upper cauline leaves narrowly ovate to cordate-amplcxicaul ; anther-sacs hirtellous on the sides. 



43. P. Pennellianus. 



Section 5. Anularius. 



Represented by a single species. 44. P. acuminatus. 



Section 6. Peltanthera. 



Leaves serrate or dentate (if entire, the corolla ventricose and not reddish) ; corolla usually ventricose and 

 2-lipped, never scarlet; usually suffrutescent at base. Subsection i. Spectabiles. 



Leaves entire; corolla tubular, subregular, scarlet to carmine or rose-lavender; herbaceous throughout. 



Subsection ;'. Centranthifolii. 



Subsection i. Spectabiles. 



Corolla abruptly inflated from a short tube about equaling the calyx, strongly 2-lipped, white, tinged with 

 pink, lavender, or purple, mostly 12 mm. or more wide; staminode long-bearded, uncinate. 

 Leaves obviously dentate, lance-ovate; inflorescence glandular; stems unbranched. 



Upper leaves connate-perfoliate, glaucous; ovary usually glandular-puberulent; thyrsus virgate. 



45. P. Palmeri. 

 Upper leaves distinct, usually bright green; ovary glabrous; thyrsus lax. 



46. P. Grinnellii. 

 Leaves essentially entire and linear; inflorescence glabrous; stems freely branched. 



47. P. fruticiformis. 



