504 ’ SCROPHULARIACEZ LINARIA 
arm ANTIRRHINUM 
a palate at the throat. Capsule opening by irregular ‘perforations or 
lacerate chinks not by normal valves. 
2 LINARIA Tourn. Juss. Gen. 120 (Toap-Fuax.) 
Herbs, or some exotic species shrubby, with alternate, or the 
lower and those of sterile shoots opposite, leaves and yellow white 
blue or purple flowers in terminal racemes or spikes. Caylx 5- 
parted, the segmenis imbricated-in the bud. Corolla bilabiate, 
the upper lip erect, 2-lobed, outside of the lower one in the bud, 
the tube spurred at the base, or the spur rarely wanting; lower 
lip spreading, 3-lobed, its base produced into a palate often nearly 
closing the throat, Stamens 4 didynamous, not exserted. Cap- 
sule ovoid or globose, opening by one or more mostly 3-tcothed 
pores or slits below the summit. Seeds numerous. Ours are 
perennials by short rootstocks. 
L. vurearis Mill, Gard. Dict. ed. 8, No. 1. Pale green and slightly 
glaucous? stenis slender erect, very leafy, 1-3 feet high from short perenni- 
al rootstock, glabrous or sparingly glandular-pubescent above: leaves linear, 
sessile, entire, acute at both ends, mostly alternate 6-18 lines long; flowers 
1°. Gensel y racemose, light yellow, 12-16 lines long, the spur of the erect corolla 
somewhat darker; the palet orange-colored: pedicels 2-4 lines long nearly 
erect : calyx-segments oblong, acutish, about 144 lines long: spur subulate, 
nearly as long as the body of the corolla; middle lobe of the lower lip 
shorter than the other 2: capsule ovoid: seeds rugose, winged. In waste 
places. Introduced from Europe. 
L. Canadensis Dumont Bot. Cult. ii. 96. Glabrous: flowering stems 
erect or ascending very slender simple or branched 4-30 inches high; the 
sterile shoots spreading or procumbent, very leafy : leaves linear-oblong, 4- 
15 lines long, 43-1 line wide, entire, sessile; those of the sterile shoots often 
opposite: flowers blue, 3-4 lines long, in long slender racemes : pedicels 3-4 
lines long, erect, in fruit appressed to the rachis, minutely bracted at the 
base; calyx-segments lanceolate, acute or acuminate, about as long as the 
capsule: spur of the corolla filiform, curved, as long as the tube or longer: | 
palate a white convex 2-ridged projection: capsule opening by 2 apical 
holes, each becoming 3-toothed: seeds angled, wingless. On rocky banks, 
Oregon to California and across the continent. 
3 ANTIRRHINUM Tourn. L, Sp. 612. 
Annual or perennial herbs with all or all but the lower leaves 
alternate, and rather large flowers in terminal racemes or solitary 
in the axils of the upper leaves or bracts. Calyx 5-parted, the 
segments imbricated in the bud. Corolla irregular, gibbous or 
saccate, but not spurred atthe base, 2-lipped, the upper lip erect, 
2-lobed; the lower spreading, 3-lobed, its base produced intoa 
palate nearly or quite closing the throat. Stamens 4,didynam- 
ous, included ; filaments filiform, or dilated at the summit. Style 
filiform. Capsule ovoid or globose, opening by chinks or pores 
below the summit. Seeds numerous, not winged. 
A. leptaleum Gray Proc. Am. Acad. vii, 373. Viscid-villous: stem 
erect 1-2 feet high from an annual root simple or branched: leaves linear- 
lanceolate to linear, 6-18 lines long, entire, the lower ones on slender 
petioles, the uppermost ones smaller and sessile: flowers on short pedicels 
