18 PAPAVERACES. 
1. BRASENIA, Schreber. 
% B. peltata, Pursh. Leaves 2 to 4 inches long: white or purplish flowers, 
1. NUPHAR, Smith. 
1. N. polysepalum, Engelm. Leaves 6 to 12 inches long: stigma broad. 
SARRACENIACEXR. 
Darlingtonia Californica, Torrey. Hooded tubular leaves with a pair of mus- 
tache-like appendages above the opening: solitary flower nodding on a bracteate scape. 
PAPAVERACEE. 
° Herbs with entire narrow leaves ; the uppermost whorled or opposite: sepals 8, caducousy 
petals 6 in 2 rows, white or yellowish, 
Filiform stigmas 6 to many; ovaries forming a cylinder............... pisces sfaialeie 1 
Stigmas 3; capsule triangular-ovoid to obovoid or linear..........-. +00... eeeeeeeee 2 
* * Herba with divided or lobed alternate leaves. 
Sepals 3, winged on the back: half shrubby............... 2c ce eceeee eee e eee eewees 3 
Sepals 3 or 2, sharp-horned: bristly with stiff prickles.............00.0--- eee ceeees 4 
Sepals 2: stigma slightly 4-8-lobed: slender purplish filaments. ..............00-e000- 5 
Sepals united into a conical cap: slender stigmas unequal. ............20+--eeeceeees 6 
“ * * Shrubs or woody based perennials. : 
Sepals 2: buds globular: stigmas 2: leaves entire.............eecccceceeecescececces 7 
‘Sepals 3: petals 6, very large, white: leaves pinnatifid..... Shietna maaan S caevseeces S 
1. PLATYSTEMON, Bentham. 
1. P. Californicus, Benth. Hirsute: peduncles long, axillary. 
2. PLATYSTIGMA, Bentham. 
lineare, Benth. Hirsute: stems short: peduncles long: stamens many. 
Californicum, B. & H. Capsule 9 to 15 lines long: stamens 10 to 12, 
Oreganum, B. & H. Capsule shorter: stamens 4 to 6: smaller. 
denticulatum, Greene. Leaves denticulate: stamens 6 to 9. 
Pe wn 
ON 
3. ROMNEYA, Harvey. 
1. BR. Coulteri, Harv. White fiowers 3 or more inches broad: glaucous leavea, 
4. ARGEMONE, Linnezus. 
1. A. hispida, Gray. Densely prickly, petals and stamens only excepted. 
