152 CELESTRALES 



1. Rhamnus lanceolata Pursh. Buckthorn. 

 In moist soil in the eastern part of the state. Bellevue, Meadville; 

 Nehawka; Nemaha; Weeping Water; Wymore. 



2. Rhamnus ainifolia L'Her. 



In swampy soil in the eastern part of the state. Omaha. 



3. Rhamnus caroliniana Pursh. 



In the southeastern part of the state. Weeping Water; Wymore. 



2. Ceanothus. 613. 



Peduncles terminal and axillary, elongated, the axillary as long as 

 the leaves, leaves 2.5-5.5 wide. 1. C. americanus. 



Peduncles mostly terminal, short, leaves 7-26 mm. wide. 



Nearly glabrous. 2. C. ovatus. 



Leaves, petioles and peduncles densely pubescent. 



2a. C. ovatus pubescens. 



1. Ceanothus americanus L. New Jersey Tea. 



In the southeastern part of the state. Fairbury; Lincoln; Weeping 

 Water. 



2. Ceanothus ovatus Desf. Red Root. 

 Over most of the state but most common in the east. Lincoln; Rich- 

 ardson County; Thedford; Wymore. 



2a. Ceanothus ovatus pubescens T. & G. 



Over a large part of the state, but most common in the east. Long 



Pine; Ponca; Red Cloud; Thedford; Cuba; Kennedy. 



2. VITACEAE. 



Inflorescence thyrsoid, the peduncle usually continuing through it as 

 a main axis, petals falling away together without expanding. 



1. Vitis. 



Inflorescence cymose, the peduncle repeatedly forked, into several 



main branches, petals separating and expanding before falling. 



Leaves not palmately compound. 2. Ampelopsis. 



Leaves palmately compound. 3. Parthenocissus. 



1. Vitis. 613. 

 Leaves densely flocose-pubescent beneath. 



Twigs terete; fruit 10 mm. in diameter; seeds 2-3, about 6 mm. long. 



V. aestivalis. 

 Twigs angular ; fruit 6-8 mm. in diameter; seeds 1-2, about 4 mm. 

 long. 1. V. cinerea. 



Leaves gjabrate or slightly pubescent beneath when young. 



Leaves mostly 3-7 lobed, fruit 8-10 mm. in diameter, ripening in 

 summer, seeds 2-4. 2. V. vulpina. 



Leaves sometimes slightly 3-lobed; fruit 6 mm. in diameter, ripen- 

 ing after frost; seeds 1-2. 3. V. cordifolia. 



Vitis aestivalis Michx. Summer Grape. 



Occurs in northeastern Kansas and probably in southeastern Nebraska. 



1. Vitis cinerea Engelm. 



Along the Missouri in the southeastern part of the state. Peru. 



2. Vitis vulpina L. Early Wild Grape. 

 Common along streams throughout the state. Anselmo; Indianola; 

 Nebraska City; Newcastle; Peru; Pine Ridge; Plummer Ford; Tecum- 

 seh; Thedford; Valentine. 



