SCROPHULARIACEAE. 331 



Flowers yellow; shrub. 8. P. antirrJiinoides. 



Anther cells horseshoe-shaped, remaining 



closed below and saccate. 9. P. heterophyllus. 



1. P. cordifolius Benth. Somewhat scandent over shrubs by 

 long sarmentose branches, very leafy, scabrous-puberulent and 

 the inflorescence somewhat glandular; leaves subcordate or ovate 

 with truncate base, acutely serrate or dentate, 2.5 cm. long or 

 less; thyrsus short and leafy; peduncles several-flowered; sepals 

 ovate-lanceolate; corolla scarlet, the tube about 2.5 cm. long, the 

 lips about 15 mm. long, the upper lip erect, the lower more or less 

 spreading; sterile filament bearded down one side; anthers dehiscent 

 through the apex. 



Common in the chaparral belt of all the mountains. April- 

 July. 



2. P. ternatus Torr. Glabrous and the long virgate flowering 

 branches glaucous, 1-2 m. high; leaves linear-lanceolate, rigid, 15- 

 35 mm. long, acutely serrate or denticulate with salient teeth, the 

 upper ternately verticillate; flowers in a long racemiform thyrsus; 

 sepals ovate-acuminate; corolla pale scarlet, 2.5 cm. long, the lobes 

 about 6 mm. long; stamens as in the last. 



Occasional in the San Gabriel, San Bernardino and Santa Ana 

 Mountains. May-August. 



3. P. labrosus Hook. f. Glabrous; stems herbaceous, slender, 

 erect, simple, 4-5 dm. high; leaves all entire, the lowest oblanceolate, 

 5-6 cm. long, about 1 cm. broad, the upper linear-lanceolate, re- 

 duced; bracts minute; flowers in a simple raceme; pedicels 1-2 cm. 

 long; calyx-lobes ovate, acuminate, 4 mm. long; corolla scarlet, 

 2.5-3 mm. long, destitute of beard; tube narrow; upper lip erect, 

 the 3 lobes of the lower one equaling the upper one in length, re- 

 flexed, about two-thirds the length of the tube; sterile filament gla- 

 brous; anthers closed toward the apex. 



Frequent in the San Gabriel and San Bernardino Mountains in 

 open places among the pines. June-August. 



4. P. centranthifolius Benth. Glaucous, strict and virgate, 

 4-8 dm. high; leaves all entire, the lower lanceolate, the upper 

 clasping, ovate-lanceolate; panicle narrow, usually 3 dm. long or 

 more; pedicels slender; corolla deep scarlet, narrow, tubular and 

 obscurely bilabiate; the short oblong lobes alike, except that the 

 posterior are united higher; anthers opening widely, splitting 

 through the apex. 



Common in the foothills and mountains mostly below the pine 

 belt throughout our range. April-July. 



5. P. spectabilis Thurber. Pale or glaucescent and glabrous 

 throughout, 6-12 dm. high; leaves thinnish-coriaceous, ovate or 

 ovate-lanceolate or the lower oblong, acute, the upper pairs acumi- 

 nate and their broad bases connate-perfoliate, spinulosely dentate 

 or denticulate; thyrsus many-flowered, elongated pyramidal or 

 sometimes virgate, 3-6 dm. long; peduncles and pedicels slender; 

 corolla rose-purple or lilac with the ample limb blue, 2.5 cm. long; 



