210 ELEMENTS OF BOTANY. 



upper lip erect, 2-lobed, the lower spreading, 3-lobed, the 

 prominent palate nearly closing the throat ; stamens 4, didyn- 

 amous, included ; style filiform, its base often persistent ; 

 capsule globose to oblong, seeds smooth or roughened. 



A. MAJUS L. Snapdragon. Perennial ; stem erect, smooth 

 below, glandular-pubescent above, 1-2 ft. high; leaves linear to 

 oblong-lanceolate, entire, smooth, sometimes fleshy, sessile or short- 

 petioled ; flowers in a terminal raceme ; pedicels short, stout, erect 

 in fruit; corolla lj-2 in. long, of many colors; capsule oblique, the 

 persistent base of the style bent forward. May-September. Com- 

 mon in gardens and often escaped. 



IV. CHELONE. 



Perennial herbs ; stem smooth ; leaves opposite, serrate, 

 petioled ; flowers large, in dense, bracted spikes ; calyx 

 5-parted ; corolla white or purple, inflated-tubular, the upper 

 lip concave, emarginate, the lower spreading, woolly within, 

 the middle lobe often shorter ; stamens 5, one of them small 

 and sterile, the anthers didynamous, filaments and anthers 

 woolly ; seeds broadly winged. 



C. GLABRA L. Snake-head. Stem erect, simple or branched, 

 4-sided, 2-3 ft. high ; leaves lanceolate, acuminate, short-petioled, 

 serrate, sometimes pubescent beneath ; spike terminal, short, simple 

 or branched, nearly sessile ; bracts ovate ; corolla white or pink, 

 1-li in. long. June-September. Along streams. 



V. PENTSTEMON. 



Perennial ; stem erect, rarely branched ; leaves opposite, 

 or the upper sometimes alternate; flowers white or purple, 

 in terminal cymes or panicles ; calyx 5-parted ; corolla tube 

 enlarged or inflated above, upper lip concave, emarginate or 

 2-lobed, the lower 3-lobed ; stamens 5, included, ^declined at 

 the base, 4 of the stamens anther-bearing and didynamous, 

 the other sterile and usually bearded ; style slender ; capsule 

 2-valved, seeds wingless. 



1. P. HiRSUTus (L.) Willd. Hairy Beard-tongue. Stem erect, 

 slender, pubescent, 18-24 in. high ; lower leaves ovate to ovate- 

 lanceolate, long-petioled, the middle leaves oblanceolate, tapering to 



