112 DIDYNAMIA AN G I O S PERM I A , 
BUCHNER A. 
Calyx 5-dentatus. 
Corolice limbus 5-fi- 
dus, aequalis, lobis ob- 
cordatis. Capsula 5- 
locularis. 
1. Americana. 
B. caule simplici ; 
foliis lanceolatis, sub- 
denlatis, asperis, tri- 
nervibus ; spiels re- 
motifloris. 
Gen. Pl. 1035. 
Calyx 5-toothed. 
Border of the Corolld 
5-cleft, equal, with the 
lobes obcordate. 
Capsule 5-celled. 
Stem simple; leaved 
lanceolate, slightly 
toothed, rough, 3-ner- 
ved ; spikes with the 
flowers remote. 
Sp. pl. 3. p. 334. Walt. p. 169. Mich. 2. p. 18. Pursh 2. p. 42 i. 
Perennial. Stem from 1 — 2 feet high, terete and with the whole plant 
s'cabrous and a little hairy. Leaves opposite, sessile. Floivers at first 
crowded on the spikes, becoming remote as the spike lengthens. Bractea, a 
leaf at the base of each flower, ovate, acute, nerved, with two lateral leaves 
smaller, linear-lanceolate. Calyx cylindrical, slightly incurved, nerved, 
with the border somewhat bilabiate, the upper lip 3-cleft, the lower 2-part- 
ed, the segments all erect, acute. Corolla hairy, purple, the tube twice as 
long as the calyx, and a little incurved, the two upper segments of the bor- 
der rather smaller than the lower. Stamens very short, in the tube of the 
corolla. Style shorter than the stamens. Stigma obtuse. Seeds several in 
each cell of the capsule, furrowed, attached to a central receptacle. 
Grow r s in damp pastures. Common. 
Flowers from May to September. 
ANTIRRHINUM. Gen. Pl. 1007. 
Calyx 5-phylIus. 
Corolla calcarata, rin- 
gens, rictu clauso,paI- 
ato prominente. Cap- 
Calyx 5-leaved. 
Corolla bearing a 
spur, ringent, with the 
throat closed and the 
