DICOTYLEDOlirOUS PLAI5TS 203 



1. L. vulgaris, Miller. Butter-and-eggs, Jacob's Ladder, 

 Wild Flax. A perennial, erect, smooth herb, with a bloom, stem 

 1-2 ft. high. Leaves linear or lanceolate', 1-3 in. long, often 

 whorled. Racemes densely flowered. Sepals shorter than the spUr. 

 Corolla yellow, |-1 in. long ; spur parallel to and as long as the 

 tube ; throat closed by a palate-like fold. Common in dry fields and 

 pastures and along roadsides ; introduced from. Europe. 



2. L. canadensis, Dumont. Toad-elax. Biennial ; flowering 

 stems erect, slender, rarely branched, smooth, 1-2 ft. high, sterile 

 stems prostrate, with opposite or whorled leaves, 2-6 in. long. 

 Leaves linear, entire, sessile. Racemes erect, slender ; pedicels 

 erect, as long as the calyx. Corolla small, blue and white, the spur 

 thread-lite, curved, longer than the pedicels. Capsule 2-valved, the 

 valves 3-toothed. On dry or cultivated ground E. 



in. ANTIRRHINUM, Toum. 



Annual or perennial herbs. Leaves entire, rarely lobed, 

 the lower ones opposite, the upper alternate. Flowers axillary 

 and solitary or racemed and bracted. Calyx 6-parted. 

 Corolla 2-lipped. The tube witt a sac, the broad bearded 

 palate closing the throat. Stamens 4. Stigma with 2 short 

 lobes. Capsule 2-celled, the upper cell opening by 1 pore, 

 the lower by 2. 



1. A. majus, 1. Snapdragon. Perennial; stem erect, smooth 

 below, glandular-downy 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 1^-2 in. long, of many colors. Capsule 

 oblique, the persistent base of the style bent forward. Common in 

 gardens, cultivated from Europe, and often escaped.* 



IV. PENTSTEMON, Mitchell. 



Perennials, the stems branching from the base, unbranched 

 above. Leaves opposite. Flowers usually shoAvy in a termi- 

 nal panicle. Calyx of 5 nearly distinct sepals. Corolla 

 tubular, the tube wide above and narrowed below ; 2-lipped. 

 Stamens 4, 2 long and 2 short, with a fifth antherless filament 

 as long as the others, its upper half bearded. Capsule ovoid, 

 acute. 



1. P. pubescens, Solander. Stem somewhat sticky-downy, 1-2 

 ft. high. Leaves varying from oblong to lanceolate, 2-4: in. long, 



