CA]n'Ai:iDACi:J£. (^caI'Ei: family.) 27 



20. BISCUTEIiLA,^ L. 



Erect stellate-pubescent brauchiug herbs, with eutire or ijinuatifid leaves, 

 and }-ello\v or jHir|ili>h tlowers. 



1. B. Wislizeni, Benth. & Ilouk. A foot or more high, covereil 

 throughout with a line, but deuse. stellate pubesceuce : leaves liuear-laneeolaie 

 to broadly lanceolate, entire, slightly undulate or deeply piuuatifid : c;u h half 

 of the pod roundish. — Dilfii/raa Wislizmi, Kngelni., of the various Westeru 

 reports. S. W. Colorado, Brandeyee, to Arizona and Texas. 



Order 7. CAPPARIDACE^. (Caper Family.) 



Herbs, with alternate leaves and perfect liypogyuous Uowers, sepals 

 and petals as in Cnidferce^ stamens 6 or more, nearly equal in leni^th, 

 pod one-celled with 2 parietal placentae and kidney-shaped seeds, the 

 embryo incurved rather than folded. 



• stamens 8 to 32. 



1. Polanisla. Flowers whitish or imrple. Pod elongated. 



• * Stamens 6. 



2. Cleome. Flowers yellow or pink-purple. Pod oblong or linear, many-seeded. 



'.'>. Cleouiella. Flowers yellow. Pod rhomboidal, 2-horued or globular, few-seeded 



1. POLANISIA, Raf. 



Sepals sometimes united at base. Petals with claws and eniarfjinate. Pod 

 compressed or cylindrical, many-seeded. — Annual herbs, ill-scented and mostly 

 glandular, with 3-foliolatepetioled leaves, and flowers in leafy bracted racemes. 



1. P. trachysperma, Torr. & Gray. Leaves with 3 lanceolate leaflets; 

 floral bracts mostly simple : petals with slender claws as long as the .sep:ds : 

 stamens 12 to 16, exserted : pod very rarely on a short slender stipe : seeds jimly 

 pitted and often urirti/. — P. uiiifjkvidulosa of the Fl. Colorado and Bot. King's 

 Exp. Colorado and Wyoming to the Columbia Kiver, and ea.stward to Kan- 

 sas and Texas. 



2. P. graveolens, Kaf. Leaves ivit/i .3 ohlonq hnflets: flowers small: 

 calyx and filaments jjurplish : petals yellowish-white: stamnisnl>out W, scarcely 

 (xrpfdlnij tlie pfials : pod slir/lit/i/ stipitate. — Upper Arkausas Valley, Colorado, 

 and eastward across the continent. 



2. CLEOME, L. 



Sepals sometimes united at l)ase. Pod stijiitate, many seeded. — Fn-. t 

 brandling annuals, witli palmately 3 to 7-foliolate leaves, flowers in bracteate 

 racemes, and pods pendent on spreading pedicels. 



1 Raphanus sativus, L., is more or less hispid, with purple or msc-oolorH flmvers. nml 

 an inflated long-pointed pod. — The common Radish, running wild in cuUivat«*d grounds. 



