DICOTYLEDONS. 209 



1. VERBASCUM. 



Biennial ; stem slender, erect ; leaves alternate ; flowers in 

 spikes, racemes or panicles ; calyx deeply 5-cleft ; corolla 

 rotate, 5-lobed, the lobes nearly equal ; stamens 5, unequal, 

 declined, some or all of the tilaments bearded; style flat- 

 tened at the apex ; fruit a globose capsule, seeds roughened. 



V. Blattaria L. Moth ]\Iullkix. Stem erect, slender, simple 

 or sparingly branched, smooth below, pubescent above, 2-4 ft. high ; 

 leaves oblong to lanceolate, acute at the apex, obtuse or truncate at 

 the base, dentate to pinnately lobed, the lower petioled, the upper 

 sessile and clasping ; raceme long and loose, glandular-pubescent, 

 pedicels 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, April-July. Common in fields and 

 waste places ; naturalized from Europe. 



II. LINARIA. 



Annual, biennial or perennial ; leaves mostly alternate on 

 the flowering stems, often opposite or whorled at the base 

 aud on sterile stems, entire, dentate or lobed ; flowers in 

 l)racted spikes or racemes ; calyx 5-parted ; corolla spurred 

 at the l)ase, upper lip erect, emarginate or 2-lobed, the lower 

 lip spreading, 3-lobed, the throat nearly closed by a promi- 

 nent palate ; stamens 4, didynamous, included ; fruit a glo- 

 bose capsule opening at the base, 



L. Canadensis (L,) Duniont. Toad-flax. Biennial; flower- 

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

 .stems pro.strate, with opposite or whorled leaves, "J-G in, long ; leaves 

 linear, entire, sessile ; racemes erect, slender ; pedicels erect, as long 

 as the calyx ; corolla small, blue and white, the spur filiform, curved, 

 longer than the pedicels; oa)>sule -!-valved, the valves 3-toothed. 

 A]»ril-May, On (by or cultixatt'cl ground. 



III. ANTIRRHINUM. 



Annual or })ercnnial herbs; leaves alternate or sometimes 

 ojiposite on sterile shoots; flowers axillary or in terminal 

 racenu^s ; calyx ,5-i)arte(l ; corolla saccate at the base, the 



