218 KEY AND FLORA 



sessile and clasping. Raceme long and loose, glandular-downy ; pedi- 

 cels bracted. Corolla white or yellow, marked with brown on the back, 

 about 1 in. wide. Filaments all bearded with purple hairs. Capsule 

 longer than the calyx. Common in fields and waste places. Natural- 

 ized from Europe.* 



II, LINARIA Hill 



Herbs, rarely shrubby. Lower leaves opposite, whorled or 

 alternate. Flowers in bracted racemes or spikes, or axillary and 

 solitary. Calyx 5-parted. Corolla 2-lipped, the tube spurred. 

 Stamens 4, with sometimes a rudiment of a fifth. Stigpaa notched 

 or 2-lobed. Capsule ovoid or globose ; cells nearly equal. 



1. L. vulgaris Hill. 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. Ra- 

 cemes densely flowered. Sepals shorter than the spur. Corolla yel- 

 low, |-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. Naturalized from Europe. 



2. L. canadensis Dumont. Toadflax. 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- 

 like, curved, longer than the pedicels. Capsule 2-valved, the valves 

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



III. ANTIRRHINUM L. 



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 with 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 L. Snapdragon. Perennial; stem erect, smooth 

 below, glandular -downy above, 1-2 ft. high. Leaves linear to 

 oblong-lanceolate, entire, smooth, sometimes fle.shy, sessile 'or short- 

 petioled. Flowers in a terminal raceme; pedicels short, stout, erect 

 in fruit. Corolla l,',-2 in. long, of many colors. Capsule oblique, the 

 persistent base of the style bent forward. Common in gardens; cul- 

 tivated from Europe, and often escaped.* 



