160 UMBELLALES 



Leaves pinnate, flowers yellow. 

 Leaflets lobed or incised, carpels wing-marglnea. 



19. Pastinaca. 



Leaflets pinnatifld or parted, carpels with thick obtuse 



margins. 16. Polytaenia. 



Leaves ternate, leaflets very broad, fruit 8-12 mm. long, 



flowers white. 20. Heracleum. 



1. Sanicula. 672. 



Fruit 6 mm. long, petals and anthers greenish-white. 



1. S. marylandica. 

 Fruit 4 mm. long, or less. 



Calyx lobes ovate, styles longer than the bristles, petals yellow. . 



2. S. gregaria. 



Calyx lobes lanceolate, styles shorter than the bristles, petals 



white. 3. S. canadensis. 



1. Sanicula marylandica L. 



In woods mostly in the eastern part of the state. Harrison; Hastings; 

 Indianola; Nebraska City; Weeping Water. 



2. Sanicula gregaria Bicknell. 



In woods and thickets mostly in the eastern part of the state. Lin- 

 coln; Milford; Nebraska City; Ponca; Walton; Weeping Water. 



3. Sanicula canadensis L. 



In woods and thickets mostly along streams. Bordeaux; Lincoln; 

 Plummer Ford; Sioux County; Red Cloud. 



2. Eryngium. 673. 



1. Eryngium aquaticum L. 



In wet places in the southeastern part of the state. Nemaha County. 



3. Washingtonia. (Osmorhiza.) 675. 



Stylopodium and style 0.7-1 mm. long, fruit; not including the pedicel 

 like base; 1-1.3 cm. long. 1. W. claytoni. 



Stylopodium and style 2-4 mm. long, fruit 1.2-1.5 cm. long. 



2. W. longistylis. 



1. Washingtonia claytoni (Michx.) Britton. 



In woods mostly in the eastern part of the state. Fremont; Nehawka; 

 Nebraska City; Ft. Niobrara; Ponca. 



2. Washingtonia longistylis (Torr.) Britton. 



In rich woods throughout the state, but most common in the eastern 

 part. Anselmo; Glen; -Long Pine; Saltillo; Sioux County; Weeping 

 Water. 



4. Aplastrum. (Spermolepis.) 676. 



1. Apiastrum patens (Nutt.) Coult. & Rose. 



In sandy prairies in the eastern part of the state. Atkinson; Fair- 

 bury; Neligh; Oreopolis; Riverton; St. Paul. 



