FLORA OF THE DISTRICT OF COLUMBIA. 249 



Leaves merely toothed or entire, never lobed. 

 Capsules and ovaries flat, notched at the apex. Flowers blue or white. 



14. VERONICA. 

 Capsules and ovaries neither flat nor notched. 



Flowers closely sessile; plants very hairy 11. SOPHRONANTHE. 



Flowers evidently stalked, in some plants the stalks very short, but the 

 plants then glabrous. 

 Calyx tubular, angled, toothed, the lobes much shorter than the tube. 



corolla blue, 2.5 cm. long or larger 8. MIMULUS. 



Calyx cleft nearly or quite to the base, not angled; corolla not blue, 

 much smaller. 

 Plants more or less pubescent, or sometimes nearly glabrous, the 

 pedicels then stout and not longer than the calyx; corolla 

 yellow or whitish; calyx often with 2 bractlets at the base. 



10. GRATIOLA. 

 Plants glabrous; pedicels slender, much longer than the calyx; 

 corolla purple or purplish; calyx without bractlets. 

 Upper leaves broad at the base; capsule as long as the sepals or 



longer; fertile stamens 2 12. ILYSANTHES. 



Upper leaves long-tapering at the base; capsule shorter than the 



sepals; fertile stamens 4 9. MECARDONIA. 



Flowers not axillary, or only a few axillary, mostly in spikes, racemes, panicles, 

 or cymes, the leaves of the inflorescence, if any, much reduced. 



Capsules and ovaries flat, notched at the apex 14. VERONICA. 



Capsules and ovaries neither flat nor notched at the apex. 

 Stem leaves whorled, sharply toothed. Flowers white or bluish, in long, 



slender, very dense spikes 15. LEPTANDRA. 



Stem leaves not whorled. 

 Calyx lobes toothed, very unequal. Leaves lobed, the lobes toothed; 



corolla yellow, 1.5-2 cm. long 20. PEDICULARIS. 



Calyx lobeB entire, nearly equal. 

 Calyx lobes very obtuse, much imbricate, the calyx bracted at the 

 base. Flowers white or pinkish, about 2.5 cm. long; plants gla- 

 brous 5. CHELONE . 



Calyx lobes mostly acute, little if at -all imbricate, the calyx not 

 bracted. 

 Corolla yellow, large and showy; leaves often lobed; plants often 

 very viscid. Calyx lobes as long as the tube or shorter. 



17. AUREOLARIA. 

 Corolla not yellow; leaves never lobed; plants very slightly if at 

 all viscid. 

 Calyx tubular, the lobes much shorter than the tube; flowers 



sessile or nearly so, purplish blue 16. BTJCHNERA. 



Calyx not tubular, the lobes longer than the tube; flowers stalked. 



Corolla white to purple; leaves sessile 6. PENSTEMON. 



Corolla lurid within; leaves petioled 4. SCROPHTTLARIA. 



1. VERBASCTJM L. 



Plants very woolly; flowers in dense spikes, yellow 1. V. thapsus. 



Plants green, nearly glabrous; flowers in loose racemes, yellow or white. 



2. V. blattaria. 



1. Verbascum thapsus L. Mullein. 



Fields and waste ground; common. July-Aug. Native of Eur. and Asia: widely 

 naturalized in N. Amer. 



