DICOTYLEDONOUS PLANTS 93 
VII. CORYDALIS, Vent. 
Leafy-stemmed biennial herbs (the American species). 
Leaves much divided, alternate or nearly opposite. Racemes 
terminal or opposite the leaves. Sepals 2, small. Petals 4; 
corolla with a single spur at the base, on the upper side. 
Capsule many-seeded. 
1. C. glauca, Pursh. Pate Corypatis. Plant erect, covered 
with a bloom. Flowers pink-purple with yellow tips. “Spur of the 
corolla very short and rounded. Rocky woods. 
2. C. aurea, Willd. GoLDEN CorypaLis. A low, spreading plant, 
finally ascending. Corolla bright yellow, 1-2 in. long; the spur 
shorter than the pedicel, somewhat bent. Shaded, rocky banks. 
39. CRUCIFERZ. MustTarp FAmMILy. 
Herbs with pungent, watery juice and alternate leaves with- 
out stipules. Sepals 4, often falling off early. Petals usually 
4, arranged in the form of a cross. Stamens 6, the 2 outer 
ones shorter than the 4 inner ones. Fruit generally a pod, 
divided into two cells by a thin partition which stretches 
across from one to the other of the two placente. The 
flowers throughout the family are so much alike that the gen- 
era and species cannot usually be determined without examin- 
ing the tolerably mature fruit. 
A. 
Pods short and flattened, contrary to the partition, splitting open when ripe. 
Pod roundish. Lepidium, I. 
Pod triangular, inversely heart-shaped. Capsella, IX. 
B. 
Pods globular or cylindrical, splitting open when ripe. 
(a) Pods globular. Flowers white. Petals much longer 
than the calyx. Cochlearia, II. 
(6) Pods cylindrical; seeds ellipsoid. Flowers very small, 
yellow. Sisymbrium, IIL 
