122 CAPPARIDACEiE. Polanisia. 



purple) distinctly unguiculate ; pods lanceolate, longer than the stipe. — 

 Pursh, fl. 2. p. 441. Atalanta serrulata, Nutt.! gen. 2. p. 73. Peritoma 

 serrulata, DC. proclr. 1. p. 237. 



Banks of the Missouri and Arkansas, Nuttall! Dr. James-! Aug. — (I) 

 Nearly glabrous. Leaves glaucous above. Flowers in a terminal raceme. 

 Calyx at length separating from the base : segments short, subulate. Sta- 

 mens equal. 



2. C. integrifolia : somewhat glaucous ; leaves 3-foliolate ; leaflets (and 

 bracts) lanceolate (the lowermost oblong), entire, submucronate ; sepals 

 united to the middle; petals (reddish-purple) with very short claws; pods 

 oblong-linear, compressed, much longer than the stipe. — Peritoma? integri- 

 folia, Nutt. in jour. acad. Philad. 7. p. 14. 



Plains of the Platte to Oregon, Nuttall ! June-Aug. — (T) Stem 2-3 feet 

 high. Racemes sometimes nearly a foot long. Flowers large, showy- 

 Calyx persistent; segments triangular-acuminate. Stamens equal. — This 

 species was originally described from specimens collected by Capt. Wyeth 

 exhibiting the floral leaves only, which are narrowly lanceolate and very 

 acute at each end. Mr. Nuttall obtained complete specimens in his recent 

 journey. 



3. C. aurea : " glabrous ; leaves 3-5-foliolate ; leaflets oblong-lanceolate, 

 acute at each end, entire [sepals united at the base only] ; petals oblong- 

 elliptical, nearly sessile (golden-yellow); stamens equal; pods linear, [short] 

 longer than the stipe." Nutt. ! mss. — Peritoma aurea, Nutt. in jour. acad. 

 Philad. 7. p. 15. 



" Plains of the Platte to Lewis's River, in irrigated places. June-Aug. — (T) 

 Branching, 1-3 feet high. Muchlargerin all its parts than C. lutea." Nutt. 



4. C. lutea (Hook.) : nearly glabrous ; leaves 5-foliolate; leaflets narrowly 

 lanceolate, entire ; sepals nearly distinct ; petals (yellow) oblong-obovate, 

 nearly sessile ; stamens unequal ; pods oblong-lanceolate, about the length of 

 the stipe. — Hook. Jl. Bor.-Am. 1. p. 70. t. 25. 



Rocky Mountains and Oregon, Douglas, Nuttall ! — (T) Stem 6-12 inches 

 high. Sepals lanceolate, persistent. " Stamens 6 of which 2 are longest, 

 with small oblong curved anthers, and 4 shorter with linear mucronate an- 

 thers." Hook. I. c. But the figure represents a flower with 4 long stamens 

 and 2 short ones. 



4. POLANISIA. Raf. injour.phys. (1819) f». 98. 



Sepals distinct, spreading. Petals 4. Stamens 8-32: filaments filiform 

 or dilated at the summit. Torus minute (often nectariferous). Pod linear, 

 sessile or nearly so. — Annual herbs with the habit of Cleome, mostly glan- 

 dular, with a heavy odor. 



§ 1. Torus hearing a short fleshy nectary or gland next theupper sepal: 

 filaments filiform, ojten unequal and more or less declined, (6-8 of 

 them arising from between the nectary and the ovary) : petals on slen- 

 der claws, unequal, emarginate or entire : sepals tardily deciduous. — 

 Polanisia proper. 



Polanisia proper, as is indicated by R. Brown (in app. to Denh. <§- Clapp.p. 15), 

 consists of two American species solely, viz: P. graveolens and the closely allied 

 P. uniglandulosa of Mexico. The close resemblance between these two species was 

 iirst noticed by Nuttall. (See gen. JV. ^m. pi. 2. p. 74.) A third species exists in the 



