CERATOPHYLLACEAE 57 
3. Nelumbo. 408. 
1. Nelumbo lutea Pers, 
In ponds along the Missouri and Platte Rivers. Sharing the same fate 
as the last. Near Ames; Fremont; Nemaha. 
5. CERATOPHYLLACEAE. 
Ceratophyllum. 408, 
1, Ceratophyllum demersum L. 
Common in streams, ponds and lakes. Callaway; Grant County, 
Newark. 
6. ANONACEAE. 
Asimina. 410. 
1. Asimina triloba (L.) Dunal. American Pawpaw. 
Along the Missouri in the southeastern part of the state. Nebraska 
City; Nemaha; Peru; Richardson County; Talmage. 
RHOEODALES. (PAPAVERALES.) 
Flowers quite irregular. 
Some of the petals spurred. 1. Papaveraceae. 
None of the petals spurred. 2. Resedaceae. 
Flowers regular or nearly so. 
Juice milky, yellow or red, sepals falling when the flower opens. 
1. Papaveraceae. 
Juice not colored, sepals persistent. 
Capsule 2-celled, stamens not more than 6. 3. Cruciferae. 
Capsule i-celled, stamens 6-many. 2. Capparidaceae. 
1. PAPAVERACEAE, 
None of the petals spurred. 
Sap yellow, leaves spiky, not all basal. 1. Argemone. 
Sap red, leaves all basal, not spiny. 2. Sanguinaria. 
Some of the petals spurred. 
Both of the outer petals spurred. 3. Bicuculla. 
One of the outer petals spurred. 4. Capnoides. 
1. Argemone. 439. 
1. Argemone intermedia Sweet. 
Common in the western part of the state. Alliance; Box Butte County; 
Deuel County; Long Pine; Niobrara; Oxford; Sheridan County; Thed- 
ford; Valentine. 
2. Sanguinaria. 439. 
1, Sanguinaria canadensis L. 
Rare in woods along the Missouri River. Bellevue; Ponca. 
3. Bicuculla. (Dicentra.) 440, 
1. Bicuculla cucullaria (L.) Millsp. 
In woods in the eastern part of the state, mostly along the Missouri. 
Lincoln; Peru; South Bend; Talmage; Tecumseh; Wahoo; Weeping 
Water. 
2. Bicuculla canadensis (Goldie) Millsp. 
Nebraska? 
