60 ONAOBACEJB. 



Petals none or 4, reddish: stamens 4: leaves opposite ...•«••••»»• 9 



• * Calyx deciduous above the ovary, parts ofthefiowers in Jf», 

 + Anthers versatile {attached near the middle to thejilament). 

 a. Seeds with a tuft of silky hairs, stamens 8: lower leaves often opposite, 



Calyx-tnbe long-funnelform above the ovary, scarlet: petals 2-lobed .,•••• 8 



Calyx-limb 4-parted: anthers elliptical or roundish • 4 



6. Seeds not tufted with hairs: leaves all alternate: calyx-lobes reflexed. 

 Calyx divided nearly or quite to the ovary: anthers of two forms (or only 4). 



Leaves entire: small or minute flowers: capsules not an inch long 5 



Leaves pinnatifidly lobed: capsules 3 or 4 inches long 6 



Calyx forming a cup or tube (often long and slender) above the ovary 7 



1 1 Anthers erect, attached at or near the base to the filaments', those opposite the petals 

 shorter or sterile, rarely wanting: calyx-lobes reflexed, except in No. 11: annuals. 



Calyx-tube obconical above the ovary: petals not long-clawed 8 



petals long-clawed 9 



Calyx- tube filiform above the ovary: petals long-clawed, lobed 10 



Calyx-lobes erect: petals not clawed, 2-lobed: stigma lobes short 11 



Calyx-lobes spreading: petals clawed, entire: stigma discoid, entire 13 



Minute white flowers in bractless racemes, the parts in2's 13 



• • • 



1. JUSSI-ffiA, LinnaBus. 

 \. J, repens, L. Stems a foot or more long, rooting at base: style stout, hairy. 

 Var. Calif omica, Watson. Smaller flowers 6 to 8 lines broad: style slender, glabroua. 



2. LXJDWIGLA., Linnaeus, 

 1. L. palustris, Ellis. Smooth, creeping or floating: flowers sessile: capsule smalL 



3. ZATTSCHNERIA, Presl. 

 1. Z. Oalifomica) Presl. Villous or tomentose: calyx 10-16 lines long abov6 ovary. 



4. EPrLOBITJM, Linnaeus. 



• Flowers large: stamens and style declined: stigma lobes finally spreading or recurved'. 



perennial. 



Stem erect, simple: petals clawed, obovate, lilac-purple 1»3 



Stem decumbent, 5 to 3 inches long: leaves opposite, glaucous 3 



Flowers yellow 4 



* • Flowers STnaU, parts all erect: stigma club-shaped or cylindrical. 



Perennial: petioles present but short: in wet places: not alpine 5, 6 



Perennial: stems with 2 pubescent lines: leaves mostly opposite: alpine 7, 8 



Perennial: leaves sessile: hoary or glaucous: leaves mostly opposite: not alpine. 9, 10, 11 



