Euphorbia. KUrilUKIJlACKJ';. ^r 



thfl end of etioh l)rai)ch, hoary-puliescent, campanulate, nearly a lint; long, on short 

 pedicels ; the incurved lobes (imbriate-pectinato with densely pubescent teeth and tho 

 3 to f) thin glands with a broad similarly fimbriate margin cleft on the inner side ■ 

 styles undivided : capsule finely pubescent, obtusely 3dobed, 2 lines Ion": seeds dull 

 white, rpiadratc-oblong and compressed, obtusely angled, coarsely and rlxther faintly 

 Avnnkled; caruncle conspicuous. — Dot. Sulph. 51 ; JJoiss. 1. c. 73. 



Mngdalona Bay Lower California (///„r/.v) ; iionov^ {JVriglU) ■ P.ig f 'anon of Tantillas Moun- 

 tains, and fanip (.rant Arizona, IWmrr 1 l.e description is drawn from tlm latter specimens. 

 The original is .lcsr,,l,nl as l.aving tlic leaves sharply an<l remotely dentate or rarely entire, the 

 upper ones wl.itisl, at iase, tlie involucres 3 to f. on each l.rancli, nearly sessile, and" the (imma- 

 ture) seeds densely covered with depresseil tubercles. 



§ 4. Glands Jlatfened or convex: stipules none: involucres in dlckofouious or often 



unibellatc cymes, 4 - 5-lohed. — Titiiymalus, Uoiss. 



* Glands rounded and discoid, entire. 



10. R dictyosperma, Fisch. Sc IMey. Annual, glabrous, usually erect, A to 



IL foot higli: stem simple below or often branching from the base, dicliotomou.sly 



l)ranched above : cauline leaves scattered, oblong- to obovate-spatulate, obtuse and 



obtusely serrulate, often retuse, ^ to \h inches long; on the branches opposite, 



broadly ovato to oblong, the floral ones round-ovate, subcordate, mucronate, 2 to 6 



lines long : rays usually 3, 2 to 4 times forked : involucres and glands small : styles 



bifid or parted : capsule with rounded and warty lobes, 1 to 1 L lines long : seeds 



subglobose, delicately net-veined, dark-colored, 'witli tliin flattened caruncle.— 



r.oiss. 1. c. 135. E. Arkansana, Engelm. Sc Gray, I'l. Lindli. 53. 



From Oregon to Santa 13arl)ara County {Brrircr) and Mono Pass (Dolandrr), hut more fuMuicnt 

 ea-stward on the plains from Nebraska to Texas and New Me.xico. 



* * Glands crcscent-shniml, 2-horncd or denticvlate : leares entire. 



■*- Cauline leaves .-icaftercd, ohovate to spatulate : seeds ash-rjray, pitted or mottled : 



capsidc smooth. 



11. E. leptocera, Engelm. Annual or sometimes biennial, glabrous, erect or 

 ilecumbent at the branching base, a foot high : leaves obovate-spatulate, obtuse, 

 often mucronate, i to 1| inches long, the upper ones sometimes erose-denticulate ; 

 those on tlie branches and the floral ones opposite or usually ternate, deltoid or 

 broadly riiomI)ic-ovate, sonuaimes connate, acute, 3 to G or 8 lines broad : branches 

 2 or 3 times dichotomoiis, the upper nodes much the shorter: involucres turbinate, 

 the oblong lobes nearly entire; glamls large, crescent-sliaped, the slender horns 

 sometimes cleft : styles elongated, bifid : capsule 2 lines broad : seeds usually asli- 

 colored, oblong-ovate, conspicuously dark-pitted, .nearly IjL lines long, witii a promi- 

 nent caruncle. — Pacif. IJ. Pep. iv. 135; Boiss. 1. c. 143. E. crenulata, Eiurclm. 

 in Pot. iMex. Pound. 192. 



Nearly tliroughout tlio State; from Ventura County (Ojai, r,rkham) to riumas County, and 

 Oregon, l[<ill. 



12. E. Palmeri, Engelm. ined. Perennial, stout, glabrous, tho stem erect, a foot 

 high or more, witli a few short lateral branches and umbelliferous above, tho 4 

 or 5 rays once or twice dichotomous : leaves ovate, ol)tuse, shortly petiolate, 6 to 9 

 lines long ; of the inflorescence very ])roadly rhoinl)ic-ovato to subreniform, very 

 obtuse, mostly apiculate : involucres a line long, with rounded entire ciliate lobes ; 

 glands shortly stipitate, crenato above and slightly horned : styles short, united at 

 base, bifid to the middle: capsule ovate, 2 lines long: seeds ovate, rugose, \\ lines 

 long. 



At Talley's I^anch in tlie Cuyamaca Mountains, Palmer (n. 450, 1S75). 



13. E. schizoloba, Engelm. Perennial, glabrous or slightly puberulent above, 

 somewhat glaucous : tho herbaceous stems orpot or decumbent at base. fi to 10 inches 



