CAPER FAMILY 107 
2. A. levigata Poir. A smooth, leafy-stemmed biennial, 1-2 ft. 
high, covered with a bloom. Stem leaves lance-linear, clasping. 
Flowers small and whitish, the petals hardly longer than the sepals. 
Pods 2-3 in. long, flattened, spreading, and recurved; seeds broadly 
winged. Rocks. 
3. A. canadensis L. SrckteE Pop. An upright, leafy-stemmed 
biennial, 2-3 ft. high, simple or slightly branching above, sometimes 
slightly hairy at the base. Stem leaves sessile, oblong-lanceolate, 
pointed at both ends, downy; the lower ones toothed. Flowers small, 
whitish, the petals twice as long as the sepals. Pods scythe-shaped, 
much flattened, hanging from hairy pedicels ; seeds broadly winged. 
Rocky hillsides. 
41. CAPPARIDACEH, Caper Famity 
Herbs (when growing in cool temperate regions), with bitter 
or nauseous juice. Leaves alternate, usually palmately com- 
pound. Flowers often not actinomorphic, usually bisexual. 
Sepals 4-8. Petals 4 or wanting. Stamens 6 or more. Ovary 
and pod 1-celled, with 2 rows of ovules; seeds kidney-shaped. 
I. POLANISIA Raf. 
Ill-smelling annual plants covered with glandular or clammy 
hairs. Sepals distinct, spreading. Petals with claws, notched 
at the tip. Stamens 8-32, of various lengths. Receptacle not 
lengthened. Pod linear or oblong, rather large, many-seeded. 
1. P. graveolens Raf. A very strong-scented, leafy, branching herb, 
6-15 in. high. Leaves with 3 oblong leaflets. Flowers small, pinkish 
and yellowish-white, in the axils of leafy bracts, in terminal racemes. 
Stamens 8-12, not much longer than the petals. Pod about 2 in. 
long, slightly stalked. Gravelly banks. 
II. CLEOME L. 
Mostly annual herbs. Stems branched. Leaves petioled, 
simple, or with 3-7 entire or serrate leaflets. Flowers in 
bracted racemes. Sepals 4, often persistent. Petals 4, often 
long-clawed, nearly equal, entire. Stamens 6, filaments thread- 
like, usually projecting much, but sometimes 1-3 much shorter 
than the others, inserted on the short receptacle. Ovary on a 
