60 ONAGRACES, 
Petals none or 4, reddish: stamens 4: leaves Opposite....see-s-ccenncencesccsvoccced B 
* * Calyz deciduous above the ovary: parts of the flowers in 4's. 
+ Anthers versatile (attached near the middle to the filament). 
@. Seeds with a tuft of silky hairs, stamens 8: lower leaves often opposite, 
Calyx-tube long-funnelform above the ovary, scarlet: petals 2-lobed....... cscccveeve B 
Calyx-limb 4-parted: anthers elliptical or roundish. ......-.cccessseeeseeeces coceeee & 
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...... wegeetes 5 
Leaves pinnatifidly lobed: capsules 3 or 4 inches long........... sseeeeeceees 6 
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, rarely wanting: calyx-lobes reflexed, except in No. 11: annuals, 
Calyx-tube obconical above the ovary: petals not long-clawed............eeceeseeeee 8 
petals long-clawed............. Kiawesaes ees 9 
Calyx-tube filiform above the ovary: petals long-clawed, lobed........-... Sr einaonere 10 
Calyx-lobes erect: petals not clawed, 2-lobed: stigma lobes short..............00000- li 
Calyx-lobes spreading: petals clawed, entire: stigma discoid, entire.................5 12 
“°* Minute white flowers in bractless racemes, the parts in 2’8......... Sisiaibie: stearate 13 
1. JUSSIZZA, Linnzus. 
1, J. repens, L, Stems a foot or more long, rooting at base: style stout, hairy, 
Var. Californica, Watson. Smaller flowers 6 to 8 lines broad: style slender, glabrous 
2. LUDWIGIA, Linneus, 
1. L. palustris, Ellis. Smooth, creeping or floating: flowers sessile: capsule small. 
3. ZAUSCHNERIA, Presl. 
1, Z, OQalifornica, Presl. Villous or tomentose: calyx 10-16 lines long above ovary. 
4. EPILOBIUM, Linnzus. 
® Flowers large: stamens and style declined: stigma lobes finally spreading or recurved: 
perennial, 
Stem erect, simple: petals clawed, obovate, lilac-purple.............0.ceseeccees -1,2 
Stem decumbent, 5 to 3 inches long: leaves opposite, glaucous..............000.ecues 3 
Blowers yellows: « s:.s-4i scien teu tS eae ee ee och eek eee ws bbe. t cw speeded wae eee Say 4 
* * Flowers small, parts all erect: stigma club-shaped or cylindrical, 
Perennial: petioles present but short: in wet places: not alpine..............0.008 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 
