300 Scrophulariaceae 



capitate. Capsule septicidally dehiscent. Seeds numer- 

 ous, mostly angled. 



* Anther-cells dehiscent for tlieir xcliole lengtli or nearly so. 

 -*- Corolla-tube not dilated. 



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

 long sarnientose 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 tilament bearded down one side; anthers 

 dehiscent through the apex. 



Common in the chaparral belt of all our 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 witli 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, slen- 

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

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

 lanceolate, reduced ; 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, reflexed, about two-thirds the lengtli of the tube; 

 sterile filament glabrous; 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 



