Vou. II.J CAPER FAMILY. 157 
1. Cleomella angustifolia Torr. Northern 
Cleomella. (Fig. 1795.) 
Cleomella angustifolia Torr.; A. Gray, Pl. Wright. 1: 12. 
1852. 
Generally erect, 1°-1%° high, branching above. 
Leaflets linear-lanceolate or linear-oblong, longer than 
the petiole; bracts linear, simple; flowers yellow, 2//— 
3/’ broad; pedicels very slender, 34’ long in fruit; pod 
flattened, rhomboid, 2/’-3// broad, about 2/7 high, 
pointed, raised on a very slender stipe 2/’—-4’’ long, its 
valves almost conic; placentae persistent after the 
valves fall away, each bearing about 3 seeds. 
Prairies, Nebraska and Colorado to Texas and New 
Mexico. Summer. 
4. POLANISIA Raf. Journ. Phys. 89: 98. 1819. 
Annual branching herbs, mainly glandular-pubescent and exhaling a strong disagreeable 
odor, with whitish or yellowish flowers, and palmately compound or rarely simple leaves. 
Sepals 4, lanceolate, deciduous. Petals slender or clawed. Receptacle depressed, bearing a 
gland at the base of the ovary. Stamens 8-, somewhat unequal. Pod nearly or quite ses- 
sile on its pedicel, elongated, cylindric or compressed, its valves dehiscent from the summit. 
Seeds rugose or reticulated. [Greek, very unequal, referring to the stamens. ] 
A genus of about 14 species, natives of temperate and tropical regions. In addition to the fol- 
lowing, 2 other species are found in the southern and western parts of North America. 
Stamens equalling or slightly exceeding the petals; flowers 2'’-3’’ long. 1. P. graveolens. 
Stamens much exceeding the petals; flowers 4''-6'’ long. 2. P. trachysperma. 
1. Polanisia gravéolens Raf. Clammy-weed. (Fig. 1796.) 
Cleome dodecandra Michx. Fl. Bor. Am. 
2: 32. 1803. Not L. 1753. 
Polanisia graveolens Raf. Am. Journ. Sci. 
I: 378. 1819. 
Viscid and glandular-pubescent, branch- 
ing, 6/-18’ high. Leaves 3-foliolate, 
slender-petioled; leaflets oblong, obtuse, 
entire, 6/’-12’’ long; sepals purplish, 
slightly unequal; petals cuneate, clawed, 
deeply emarginate or obcordate, yellow- 
ish-white; stamens 9-12, purplish, equal- 
ling or slightly exceeding the petals; 
style about 1’’ long; pod lanceolate-ob- 
long, slightly compressed, 1/-14’ long, 
3/’-4/’ wide, slightly stipitate, rough, 
reticulated; seeds rough. 
Sandy and gravelly shores, western Que- 
bee to Manitoba and the Northwest Terri- 
tory, south to southern New York, Pennsyl- 
vania, Kansas and Colorado. Summer. 
