60 ONAORACK^. 



Petals none or 4, reddish: stamens 4: leaves opposite , 9 



"^ * * Calyx deciduous above the ovary: parts ofthefiowers in 4''- 

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

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



Calyi-tube long-funnelform above the ovary, soarltit: 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 6 



' Leaves pinnatifidly lobed: capsules 3 or 4 inches long 8 



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



+ + Anthers erect, attached at or near the base to the filaments; those opposite the petals 

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



Calyx-tube oboonical 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 in 2'b 13 



1. JtrSSI^A, LinniBus. 



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

 Var. Califomica, "Watson. Smaller flowers 6 to S lines broad: style slender, glabronn 



1 2. LUDWIGLA., Linnsens. 



1. Ii. pallistris, Ellis. Smooth, creeping or floating: flowers sessile: capsule small. 



3. ZAXJSCHNERIA, Presl. 

 1. Z. Oalifomica, Presl. Villous or tomentoae: calyx 10-16 lines long above ovary. 



4. EPILOBITJM, Linnaeus. 



' Flowers large: stamens and style declined: stigma lobes finally tprtading or recurved: 



perennial. 



Stem erect, simple: petals clawed, obovato, lilac-purple 1, 2 



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



Flowers yellow 4 



* • Flowers small, 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 mostlj' opposite: alpine' 7, 8 



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



