WOOTON AND STANDLEY FLOKA OF NEW MEXICO. 289 



1. Camelina microcarpa Andrzej.; DC. Syst. Veg. 2: 517. 1821. 



Type locality: European. 



Range: Native of Exirope, introduced in waste ground in many parts of the United 

 States. 



New Mexico: Pecos National Forest (Louis Rudolph). 



57. CAPPARIDACEAE. Caper Family. 



Annuals, 1 meter high or less, with watery juice usually of an unpleasant odor; 

 leaves palmately trifoliolate; flowers rather large, in terminal crowded racemes; 

 sepals 4; petals 4, entire or emarginate; stamens 6 or more, not tetradynamous, 

 mostly long-exserted ; fruit 1-celled, 2-valved, of various forms, sometimes long- 

 stipitate, the valves separating from the filiform placentae. 



KEY TO THE GENERA. 



Pods large, 3 to 7 cm. long, terete. 



Stamens 12 to 24; petals dull wliite; plants mostly 



clammy; pods sessile or short-stipitate 1. Polanisia (p. 289). 



Stamens 6; petals purplish or yellow; plants glabrous; 



pods long-stipitate 2. Peritoma (p. 290). 



Pods short, 1 cm. long or less, irregular (on long slender 

 stipes; flowers yellow). 

 Valves of the pods cymbiform or elongate-conic; pods 



several-seeded 3. Cleomella (p. 290). 



Valves of the pods ellipsoid, indurate, reticulate; pods 



2-seeded 4. WfsLiZENiA (p. 290). 



1. POLANISIA Raf. Clammy weed. 



Coarse branching clammy viscid-pubescent herbs, 40 to 70 cm. high, with trifolio- 

 late leaves and terminal crowded racemes of dull whitish flowers; stamens long- 

 exserted, purplish; leaflets elliptic-obovate, entire, obtuse; inflorescence with crowded 

 imifoliolate leaflike bracts; fruit 10 cm. long or less, terete, with numerous large seeds. 



key TO THE SPECIES. 



Petals 12 mm. long or less, often purplish; filaments not exceed- 

 ing 20 mm. ; seeds rough 1 . P. trachysperma. 



Petals more than 15 mm. long, sulphur- yellow; filaments 35 to 



50 mm. long; seeds smooth 2. P. uniglandulosa. 



1. Polanisia trachysperma Torr. & Gray, Fl. N. Amer. 1: 669. 1840. 

 Type locality: Texas. 



Range: British America to Nevada, Texas, and Missouri. 



New Mexico: Farmington; Santa Fe; Zuni; Tucumcari; Sabinal; Albuquerqiie; 

 Perico; Pajarito Park; mesa west of Organ Mountains. Dry hills and plains, in the 

 Upper Sonoran Zone. 



2. Polanisia uniglandulosa (Cav.) DC. Prodr. 1: 242. 1824. 

 Cleome uniglandulosa Cav. Icon. PL 4: 3. pi. 386. 1797. 



Type locality: "Habitat in Nova-Hispania praesertim in Acapulco." 



Range; New Mexico and western Texas, southward into Mexico. 



New Mexico: Mogollon Mountains; Burro Mountains; Mangas Springs; Black 

 Range; Dog Spring; Organ Mountains; Three Rivers. Dry plains and hills, in the 

 Lower and Upper Sonoran zones. 



A common plant of the drier mountains, the arroyos, and the sandhills of the south- 

 em part of the State. It is never very abundant in any one spot, but is rather 

 widely distributed. 



52576° — 15 19 



