52 CAPPAEIDACE^E. Cleomella. 



* Stipe longer than the pod. 



1. C. longipes, Torr. Rather stout, 1 or 2 feet high, glabrous : leaflets narrowly 

 obovate to spatulate, obtuse or retuse, J to 1 inch long : sepals ovate, acute : petals 

 2 or 3 lines long : stamens long-exserted : pods nearly triangular in outline, acute 

 at base, 2 lines high, 3 to 5 in breadth, the valves being more or less strongly 

 horned : style half a line long or less ; stipe 4 to 7 lines long, about equalling the 

 pedicel. — Gray, PI. Wright, i. 11 ; Watson, Bot. King Exp. 33. 



Var. (?) grandiflora, Watson, 1. c. Leaflets and bracts narrowly obovate to 

 orbicular : sepals long-acuminate : style about a line long. 



Valleys and foothills in N. W. Nevada (Anderson, Watson) ; New Mexico ( Wright) ; stouter 

 and larger leaved forms than the original Mexican specimens of Gregg and Berlandier. 



2. C. obtusifolia, Torr. Somewhat pubescent, branching, a foot high or more : 

 leaflets oval or oblong, 3 to 6 lines long, equalling the petioles, glabrous above ; 

 stipules long and fimbriate : flowers small, in leafy racemes : sepals ovate, lacerate- 

 ciliate : petals 1 or 2 lines long : pods 2 to 5 lines broad, the valves acutely and 

 often narrowly horned : style very slender, 2 lines long : stipe 3 lines long, reflexed 

 upon the equal pedicel. — Erern. Eep. 311. 



Near Sacramento ? (Fremont) ; Soda Lake on the Mohave River (Cooper) ; Arizona, Wheeler. 



3. C. plocasperma, Watson. Low, glabrous, diffusely branching : leaflets 

 linear-oblong, 3 to 6 lines long ; bracts mostly small : petals 1 J lines long : stamens 

 short or exserted : pods short-rhombic, the valves somewhat dilated : style short ; 

 stipe once or twice the length of the pod, usually equalling the pedicel : seeds 

 minutely tessellated under the microscope. — Lot. King Exp. 33. 



Valleys of Northern Nevada, Watson, Rev. R. Burgess. 



4. C. OOcarpa, Gray. Very similar : leaves and flowers slightly larger : pods 

 ovate, the valves not dilated : seeds smooth. — Proc. Am. Acad. xi. 72. 



Saline valleys of Humboldt Co., Nevada (Torrey, Gray) ; S. "W. Colorado, Brandcgee. 



% * Stipe shorter than the pod. 



5. C. parviflora, Gray. Low and slender, decumbently branched, smooth : 

 leaflets and bracts linear, half an inch long : flowers rather few : petals scarcely a 

 line long, equalling the stamens : pods on long slender pedicels ; valves slightly 

 horned : style and stipe almost none. — Proc. Am. Acad. vi. 520 ; Watson, 1. c. 



At Camp Cady on the Mohave (Cooper) ; Northern Nevada, Anderson, Watson. 



5. WISLIZENIA, Engelm. 



Characters nearly as in the preceding, but the pod didymous ; valves contracted 

 upon the solitary seeds and deciduous with them, nutlike, nerved or reticulated, 

 open at the scar : style elongated. — Smooth erect branching annuals ; with yellow 

 racemose flowers and 1 - 3-foliolate leaves. The following are the only species. 



1. W. refracta, Engelm. One to two feet high, widely branching : leaflets 3, 

 oblanceolate to obovate, 5 to 9 lines long, usually exceeding the petioles : flowers in 

 dense racemes, at length elongated : petals a line long : stamens and ovary exserted : 

 cells of the ovary 2-ovuled : fruit 1| lines broad or more; the divergent obovate 

 reticulated valves separated by a perforated partition : style filiform, 1 to 2 lines 

 long : stipe 2 to 3 lines long, strongly refracted upon the rather longer pedicel. — 

 Wisliz. Eep. 14; Gray, PL Wright, i. 11, t. 2. 



Mohave Valley (Newberry) ; Colorado Desert (Blake) ; thence to Sonora and New Mexico. 



2. W. Palmeri, Gray. With the habit of the last : leaves simple (lowest 

 unknown), linear, 1^- inches long, very shortly petioled : racemes fewer-flowered : 



